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Podcast title BacterioFiles
Website URL https://www.asm.org/bacteriofi...
Description The podcast for microbe lovers: reporting on exciting news about bacteria, archaea, and sometimes even eukaryotic microbes and viruses.
Updated Wed, 26 Feb 2020 19:25:10 +0000
Image BacterioFiles
Category Science
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Episodes

1. 415: Global Glomus Growth Guesses
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Description:

This episode: A global estimate of plants and their root fungi shows how agriculture may have greatly affected soil carbon storage over time!

Download Episode (5.7 MB, 8.3 minutes)

Show notes:
Microbe of the episode: Rhizobium virus RHEph4

News item

Takeaways
Even small organisms can have a big effect on the climate of the planet if there are enough of them. This includes trees, which are small relative to the planet, and also includes the fungi that attach to the roots of trees and other plants. These mycorrhizal fungi thread subtly through the soil, some occasionally popping up mushrooms, and transfer valuable nutrients they gather to the trees in exchange for carbon fixed from the air.

Knowing how big an effect a given kind of organism has requires knowing how much of it is around. This study collates data from various surveys of global plant populations and the fungi that interact with their roots, to estimate a global picture of the fungi below our feet. It estimates that a kind of fungus that stores more carbon in the soil may have been replaced in many areas with fungi that store less, or no fungi at all, due to the transformation of land from wild areas to farmland.

Journal Paper:
Soudzilovskaia NA, van Bodegom PM, Terrer C, Zelfde M van’t, McCallum I, Luke McCormack M, Fisher JB, Brundrett MC, de Sá NC, Tedersoo L. 2019. Global mycorrhizal plant distribution linked to terrestrial carbon stocks. Nat Commun 10:1–10.

Other interesting stories:

 

Email questions or comments to bacteriofiles at gmail dot com. Thanks for listening!

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2. 414: Producing Proton Power Perpetually
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Description:

This episode: Microalgae can produce hydrogen, but other metabolic pathways take priority, except when special engineered hydrogenase enzymes can overcome this limitation!

Download Episode (8.4 MB, 12.2 minutes)

Show notes:
Microbe of the episode: Alphapapillomavirus 11

Takeaways
There are many options being explored as ways to replace fossil fuels. Electricity and batteries are good, but they have their limitations, especially for long-distance high-energy travel such as airplanes. Hydrogen is one good option: high energy density, clean-burning, simple to produce. Microbes can produce hydrogen through various metabolic pathways, including fermentation, nitrogen fixation byproduct, and photosynthesis. However, competing metabolic pathways make microbial hydrogen production less efficient.

In this study, scientists engineer a hydrogenase enzyme for hydrogen production in microalgae that can compete better with carbon fixation as a destination for the electrons and protons that hydrogen production requires. This engineered enzyme allowed the algae to produce hydrogen continuously, even during photosynthesis.

Journal Paper:
Ben-Zvi O, Dafni E, Feldman Y, Yacoby I. 2019. Re-routing photosynthetic energy for continuous hydrogen production in vivo. Biotechnol Biofuels 12:266.

Other interesting stories:

 

Email questions or comments to bacteriofiles at gmail dot com. Thanks for listening!

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3. 413: Finding Fire Fungi Footholds
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Description:

This episode: Some fungi only form fruiting bodies after forest fires; where do they hide the rest of the time? At least for some of them, the answer is: inside mosses!

Thanks to Daniel Raudabaugh for his contribution!

Download Episode (6.2 MB, 9.0 minutes)

Show notes:
Microbe of the episode: Nocardia brevicatena

News item

Takeaways
Forest fires can do a lot of damage, but life grows back quickly. Certain kinds of plant seed actually only germinate after a fire, and a similar thing is true of certain kinds of fungi: they only form fruiting bodies (like mushrooms, for spreading spores) after a fire. For plants, the advantage may come from increased access to light with some or all of the canopy burned away, and fungi may benefit from less competition on the ground. But in between burn events, these fire-loving (pyrophilous) fungi seem to disappear. Where do they go?

The study here sought an answer, suspecting an association with some mosses that reappeared soon after a forest fire in North Carolina in 2016. They looked for fungi lurking as endophytes inside moss and other samples, both by growing them on agar and by DNA sequencing, and they found a number of different known pyrophilous fungi. Some of these were in soil, or samples from outside the burned area, but the majority were inside mosses growing in the recently burned zone.

Journal Paper:
Raudabaugh DB, Matheny PB, Hughes KW, Iturriaga T, Sargent M, Miller AN. 2020. Where are they hiding? Testing the body snatchers hypothesis in pyrophilous fungi. Fungal Ecol 43:100870.

Other interesting stories:

 

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4. 412: Carbon Concentration Complicates Crop Cooperation
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Description:

This episode: Looking at the effects of almost doubling CO2 concentrations on the interaction between wheat varieties and beneficial fungi!

Download Episode (8.1 MB, 11.8 minutes)

Show notes:
Microbe of the episode: Lato River virus

News item

Takeaways
As the world's population grows, feeding everyone will grow more challenging. Advances in technology in the past have made today's population possible, but future advances may be needed, especially in the face of an increasing concentration of carbon dioxide in the atmosphere.

Soil microbes that partner with crop plants for the benefit of each may be part of the solution. One option to explore is a group called mycorrhizal fungi, which associate with plant roots to extend their nutrient-gathering ability, in exchange for carbon compounds produced by photosynthesis. This study examined the influence of increased carbon dioxide in the atmosphere on the interaction of several varieties of wheat with these fungi.

Journal Paper:
Thirkell TJ, Pastok D, Field KJ. Carbon for nutrient exchange between arbuscular mycorrhizal fungi and wheat varies according to cultivar and changes in atmospheric carbon dioxide concentration. Glob Change Biol.

Other interesting stories:

 

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5. 411: Parasite Produces Partial Plant-like Predator
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Description:

This episode: Giant virus in newly discovered microscopic marine predator encodes several light-harvesting proteins!

Download Episode (7.8 MB, 11.4 minutes)

Show notes:
Microbe of the episode: Dolphin mastadenovirus A

News item

Takeaways
Giant viruses are distinct in many ways from other viruses, even aside from their size. One way is the large number and variety of genes they carry in their genome. Though many of their genes are unknown in origin and function, many others appear to take the place of essential reproductive functions, such as translation and protein synthesis. This allows them to assume more control of their host's metabolism and control its resources more optimally.

In this study, the sequence of a giant virus was discovered seemingly infecting a newly discovered microscopic marine predator. The eukaryotic cell feeds on smaller microbes such as bacteria, but strangely, the virus carries genes for several light-harvesting proteins, possibly converting a heterotrophic predator into a partial phototroph.

Journal Paper:
Needham DM, Yoshizawa S, Hosaka T, Poirier C, Choi CJ, Hehenberger E, Irwin NAT, Wilken S, Yung C-M, Bachy C, Kurihara R, Nakajima Y, Kojima K, Kimura-Someya T, Leonard G, Malmstrom RR, Mende DR, Olson DK, Sudo Y, Sudek S, Richards TA, DeLong EF, Keeling PJ, Santoro AE, Shirouzu M, Iwasaki W, Worden AZ. 2019. A distinct lineage of giant viruses brings a rhodopsin photosystem to unicellular marine predators. Proc Natl Acad Sci 116:20574–20583.

Other interesting stories:

 

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6. 410: Microbes Modify Muscle Measurement
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Description:

This episode: Mice that got a microbe transplant from humans with higher physical function performed better in certain ways than mice receiving microbes from humans with lower physical function!

Download Episode (6.7 MB, 9.8 minutes)

Show notes:
Microbe of the episode: Stenotrophomonas maltophila

News item

Takeaways
Our bodies and our microbe communities are closely interconnected, with effects going both ways. Studies had previously shown that making changes to the microbe communities of mice could even affect the physical function and body composition of the mice.

This study aimed at addressing the same question in humans. There were certain consistent differences in microbial communities between elderly people with high ability to function physically, compared with low functioning people. These differences carried over in transplants of microbes from people to mice, and mice receiving microbes from high-functioning humans did better in tests of grip strength than mice receiving microbes from low-functioning people.

Journal Paper:
Fielding RA, Reeves AR, Jasuja R, Liu C, Barrett BB, Lustgarten MS. 2019. Muscle strength is increased in mice that are colonized with microbiota from high-functioning older adults. Exp Gerontol 127:110722.

Other interesting stories:

 

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7. 409: Marine Methane Mostly Munched
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Description:

This episode: Microbes in low-oxygen zones in the ocean consume significant amounts of methane anaerobically!

Download Episode (5.2 MB, 7.6 minutes)

Show notes:
Microbe of the episode: Mojiang henipavirus

News item

Takeaways
Methane is a much more potent greenhouse gas than carbon dioxide. Fortunately there's not as much of it in the atmosphere, but even smaller amounts can have significant effects on the climate.

One source of methane is low-oxygen zones in the ocean, where certain kinds of archaea make methane as part of their energy metabolism. This study found that other anaerobic microbes in the same areas consume much of this methane, preventing it from reaching the atmosphere.

Journal Paper:
Thamdrup B, Steinsdóttir HGR, Bertagnolli AD, Padilla CC, Patin NV, Garcia‐Robledo E, Bristow LA, Stewart FJ. 2019. Anaerobic methane oxidation is an important sink for methane in the ocean’s largest oxygen minimum zone. Limnol Oceanogr 64:2569–2585.

Other interesting stories:

 

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8. 408: Currents Carry Cloud Creators
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Description:

This episode: Ocean bacteria brought up from the sea floor into the air can help create clouds!

Download Episode (6.1 MB, 8.9 minutes)

Show notes:
Microbe of the episode: Streptomyces thermodiastaticus

News item

Takeaways
The ocean is an important player affecting the climate of the planet, in many ways. Its effects on clouds influence the amount of solar radiation reflected back into space or trapped as heat, and microbes play a role in this effect. Certain microbes make particles that form the nucleus of water droplets or ice crystals that make up clouds, and other microbes can perform this nucleation themselves.

In this study, an unusual combination of a phytoplankton bloom and strong winds and currents, all in the right places, led to a large number of ice-nucleating bacteria being fed and then brought up from the sea floor and launched into the air, possibly affecting weather patterns in the Arctic.

Journal Paper:
Creamean JM, Cross JN, Pickart R, McRaven L, Lin P, Pacini A, Hanlon R, Schmale DG, Ceniceros J, Aydell T, Colombi N, Bolger E, DeMott PJ. 2019. Ice Nucleating Particles Carried From Below a Phytoplankton Bloom to the Arctic Atmosphere. Geophys Res Lett 46:8572–8581.

Other interesting stories:

 

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9. 407: Fungus Facilitates Phototroph Feeding
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Description:

Probably the last episode of the year. See you in the next!

This episode: Fungus living inside plants helps them form partnerships with nitrogen-fixing bacteria!

Download Episode (5.9 MB, 8.5 minutes)

Show notes:
Microbe of the episode: Prevotella intermedia

Takeaways
Plants are very good at acquiring carbon, but they can often use some help with other nutrients. Many form partnerships with microbes such as nitrogen-fixing bacteria or mycorrhizal fungi that can help gather nutrients from the soil better than the plants' own roots.

In this study, legume plants could form a partnership with nitrogen-fixing bacteria in its roots, but a fungus living inside the plant could enhance this partnership even more, increasing the amount of nitrogen acquired and influencing the community of microbes around the plant roots in ways favorable to all partners.

Journal Paper:
Xie X-G, Zhang F-M, Yang T, Chen Y, Li X-G, Dai C-C. 2019. Endophytic Fungus Drives Nodulation and N2 Fixation Attributable to Specific Root Exudates. mBio 10:e00728-19, /mbio/10/4/mBio.00728-19.atom.

Other interesting stories:

 

Email questions or comments to bacteriofiles at gmail dot com. Thanks for listening!

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10. 406: Different DNA Destroys Disease Drivers
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Description:

This episode: DNA from related species can kill certain pathogens when they incorporate it into their genome!

Download Episode (7.9 MB, 11.5 minutes)

Show notes:
Microbe of the episode: Ungulate tetraparvovirus 3

Paper summary (paywall)

Takeaways
Neisseria gonorrhoeae, the bacteria that cause gonorrhea, have the unusual ability of taking up DNA from their surroundings at any time and making use of it in their own genome. This helps them acquire useful traits that help them survive better, such as antibiotic resistance. But it turns out that the ability is also a secret weakness!

This study showed that when N. gonorrhoeae takes up DNA from harmless, commensal species of Neisseria in the body, the DNA is similar enough to be incorporated into the genome but different enough that it kills the pathogen. This effect also occurs with a serious pathogen in the same genus, N. meningitidis.

Journal Paper:
Kim WJ, Higashi D, Goytia M, Rendón MA, Pilligua-Lucas M, Bronnimann M, McLean JA, Duncan J, Trees D, Jerse AE, So M. 2019. Commensal Neisseria Kill Neisseria gonorrhoeae through a DNA-Dependent Mechanism. Cell Host Microbe 26:228-239.e8.

Other interesting stories:

 

Email questions or comments to bacteriofiles at gmail dot com. Thanks for listening!

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11. 405: Coated Colonizers Counteract Corrosion
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Description:

This episode: Coating metal surfaces with artificial biofilms could help keep the surfaces corrosion-free even in the ocean!

Download Episode (6.3 MB, 9.1 minutes)

Show notes:
Microbe of the episode: Hymenopteran ambidensovirus 1

Takeaways
The ocean can be a harsh place for metal surfaces. Between the water, the salt, and oxygen (near the surface), corrosion is a common reality. Microbes in the ocean can contribute to this too, degrading metal structures to obtain energy for their metabolism. They colonize surfaces in biofilms that can be difficult to remove, a process called biofouling.

In this study, instead of trying to remove or prevent biofilms on surfaces, artificial biofilms were created by coating the surfaces and specially selected bacterial cells with polymers. This approach did not prevent colonization by other organisms in the sea, but preliminary results suggested that the community that did take up residence was not as corrosive as the communities found on uncoated steel.

Journal Paper:
Rijavec T, Zrimec J, Spanning R van, Lapanje A. 2019. Natural Microbial Communities Can Be Manipulated by Artificially Constructed Biofilms. Adv Sci 6:1901408.

Other interesting stories:

 

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12. 404: Phages Force Food Finding
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Description:

This episode: Another climate-related story: Cyanobacteria infected by viruses continue taking up nutrients from their environment, using it to make more viruses than would otherwise be possible!

Download Episode (6.3 MB, 9.2 minutes)

Show notes:
Microbe of the episode: Microcystis virus Ma-LMM01

News item

Takeaways
Though global warming is a global problem, accurate models for predicting where things are headed need to incorporate the activity of even the smallest organisms, if they're numerous enough. Photosynthesis and other activities of microbes in the oceans are a big sink for carbon, but cycles of other nutrients and also viruses can affect the carbon cycle.

In this study, phages infecting photosynthetic ocean bacteria were able to continue their host's uptake of nitrogen from the environment even after mostly shutting down the host's own protein production and growth. This has implications for how viruses affect carbon cycling by cyanobacteria and how quickly populations of these bacteria may grow or die off.

Journal Paper:
Waldbauer JR, Coleman ML, Rizzo AI, Campbell KL, Lotus J, Zhang L. 2019. Nitrogen sourcing during viral infection of marine cyanobacteria. Proc Natl Acad Sci 116:15590–15595.

Other interesting stories:

 

Email questions or comments to bacteriofiles at gmail dot com. Thanks for listening!

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13. 403: Mercury Modifies Microbe Metabolism
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Description:

This episode: First episode of a climate-related arc! Considering microorganisms is important when predicting the amount of carbon coming from soil as temperature increases!

Download Episode (4.7 MB, 6.75 minutes)

Show notes:
Microbe of the episode: Streptomyces virus Zemlya

News item

Takeaways
Soil as a whole has a big influence on the climate of the planet, by enabling the communities of organisms that live in it to interact and grow, taking up gases from the atmosphere and putting others back in. Even aside from plants that grow in it, the other organisms in soil can respire and break down compounds to produce CO2, adding to what's in the atmosphere already.

There has long been observed a relationship between ambient temperatures and this respiration in soil, such that more heat means more activity and more gases released from the soil, but today's study found that the microbial biomass in a given piece of land can have a big effect on the temperature/respiration relationship.

Journal Paper:
Čapek P, Starke R, Hofmockel KS, Bond-Lamberty B, Hess N. 2019. Apparent temperature sensitivity of soil respiration can result from temperature driven changes in microbial biomass. Soil Biol Biochem 135:286–293.

Other interesting stories:

 

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14. 402: Microbe Membranes Mobilize Microglia
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Description:

This episode: Gut microbes can stimulate immune cells in mouse brains to fight off viral infections!

Download Episode (9.0 MB, 13.0 minutes)

Show notes:
Microbe of the episode: Streptoverticillium mobaraense

News item

Takeaways
The central nervous system, including the brain, is a protected area of the body. Pathogens that get in can do a lot of damage, including memory loss, paralysis, and death, so there's a strict barrier in healthy people that keeps most things out of this area: the blood-brain barrier. The immune system is also kept separate, so special cells called microglia do the patrolling and protection of the brain.

Nevertheless, microbes in the gut can influence the function of the immune system in the brain, even from a distance. In this study, mice lacking gut microbes did not have as effective an immune response to a virus infecting the brain, and it was found that molecules from bacterial outer membranes were sensed by microglia to activate their defensive response.

Journal Paper:
Brown DG, Soto R, Yandamuri S, Stone C, Dickey L, Gomes-Neto JC, Pastuzyn ED, Bell R, Petersen C, Buhrke K, Fujinami RS, O’Connell RM, Stephens WZ, Shepherd JD, Lane TE, Round JL. 2019. The microbiota protects from viral-induced neurologic damage through microglia-intrinsic TLR signaling. eLife 8:e47117.

Other interesting stories:

 

Email questions or comments to bacteriofiles at gmail dot com. Thanks for listening!

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15. 401: Phototrophs Fill Fungal Filaments
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Description:

This episode: In this partnership between fungus and algae, the algae eventually take up residence inside their partner!

Download Episode (8.4 MB, 12.1 minutes)

Show notes:
Microbe of the episode: Erwinia tracheiphila

News item/Summary article

Takeaways
Partnerships and cooperation between otherwise free-living organisms is common in the natural world. Partnering with a photosynthetic organism is a smart approach, allowing the partner to get its energy from the sun and making gathering nutrients easier for the phototroph, and possibly offering protection as well. But in most partnerships, each partner stays separated by its own cell membrane.

In this study, a fungus and an alga grow well together, exchanging carbon for nitrogen, similar to how lichens operate. But after a month or so of co-culture, the algae apparently enter the cells of the fungus somehow and live inside it, happily growing and dividing, turning the fungus green.

Journal Paper:
Du Z-Y, Zienkiewicz K, Vande Pol N, Ostrom NE, Benning C, Bonito GM. 2019. Algal-fungal symbiosis leads to photosynthetic mycelium. eLife 8:e47815.

Other interesting stories:

 

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16. 400: Considering Consumables' Community Correlations
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Description:

This episode: Figuring out how gut communities change with changes in diet!

Download Episode (6.1 MB, 8.8 minutes)

Show notes:
Microbe of the episode: Hepacivirus A

News item

Takeaways
Diet can play a big role in our health. It's not a magic pill that can cure or prevent anything, but a good diet can significantly reduce many health risks for the average person, compared with a bad diet.

Diet also has a big effect on the community of microbes in our gut, and this may play a role in the health effects we see from diet, so understanding how food and microbes interact is important. This study looked at the diet quality of participants in several food categories, and correlated this with various kinds of microbes found inside them.

Journal Paper:
Liu Y, Ajami NJ, El-Serag HB, Hair C, Graham DY, White DL, Chen L, Wang Z, Plew S, Kramer J, Cole R, Hernaez R, Hou J, Husain N, Jarbrink-Sehgal ME, Kanwal F, Ketwaroo G, Natarajan Y, Shah R, Velez M, Mallepally N, Petrosino JF, Jiao L. 2019. Dietary quality and the colonic mucosa–associated gut microbiome in humans. Am J Clin Nutr 110:701–712.

Other interesting stories:

 

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17. 399: Conductor Creating Carbon Canvases
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Description:

This episode: Bacteria can aide the production of the useful material graphene, using their ability to add electrons to external surfaces!

Download Episode (7.7 MB, 11.3 minutes)

Show notes:
Microbe of the episode: Brevibacterium frigoritolerans

News item

Takeaways
Advanced materials often take advanced techniques to create, but they offer numerous benefits: increased strength and flexibility, smaller size, more options. One such material is graphene, which is basically a sheet of carbon atoms linked together like chainmail. It is only a single atom thick but is amazingly strong, mostly transparent, and good at conducting heat and electricity.

The trick is, it's hard to make in large quantities cheaply and easily. Sheets of carbons can be obtained from blocks of graphite, but these sheets are graphene oxide, which lack the desirable properties of graphene. Chemical methods can be used to remove the oxidation, but they are harsh and difficult. Luckily, bacteria are great at microscopic remodeling. In this study, electron-transferring bacteria are able to reduce the graphene oxide to graphene with properties almost as good as are achieved by chemical reduction.

Journal Paper:
Lehner BAE, Janssen VAEC, Spiesz EM, Benz D, Brouns SJJ, Meyer AS, van der Zant HSJ. 2019. Creation of Conductive Graphene Materials by Bacterial Reduction Using Shewanella oneidensis. ChemistryOpen 8:888–895.

Other interesting stories:

 

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18. 398: Marathon Microbes Maximize Mileage
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Description:

This episode: Bacteria found in the guts of serious athletes help mice exercise longer by transforming their metabolic waste!

Download Episode (7.3 MB, 10.6 minutes)

Show notes:
Microbe of the episode: Aggregatibacter (Actinobacillus) actinomycetemcomitans

News item

Takeaways
Our gut microbes affect many aspects of health, and many aspects of how we live affect our microbes. One such aspect is physical exertion, which has been associated with enrichment of various microbes in the guts of athletes. This observation led to the question: are these microbes just benefiting from the high levels of exertion, or are they able to contribute also?

This study found that certain such bacteria, when given to mice, enabled the mice to run for a longer period on a treadmill. These microbes break down lactic acid, which is generated in our bodies when we push our physical limits, but the study provided evidence that the longer run times were due not to removal of this waste product, but to the propionate compound produced by its degradation.

Journal Paper:
Scheiman J, Luber JM, Chavkin TA, MacDonald T, Tung A, Pham L-D, Wibowo MC, Wurth RC, Punthambaker S, Tierney BT, Yang Z, Hattab MW, Avila-Pacheco J, Clish CB, Lessard S, Church GM, Kostic AD. 2019. Meta-omics analysis of elite athletes identifies a performance-enhancing microbe that functions via lactate metabolism. Nat Med 25:1104–1109.

Other interesting stories:

 

Email questions or comments to bacteriofiles at gmail dot com. Thanks for listening!

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19. 397: Plant Promotes Pathogen-Prohibiting Partner
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Description:

This episode: Plants stimulate their root bacteria to compete better, and these bacteria help the plants resist disease!

Download Episode (7.3 MB, 10.6 minutes)

Show notes:
Microbe of the episode: Bacillus circulans

Takeaways
In some ways, plants' roots are like our gut. They both absorb nutrients, and they both have complex communities of microbes living alongside the host cells. These microbes can assist their hosts in various ways, and get fed in return.

In this study, one species of root bacterium is able to compete against others by producing an antimicrobial compound. The plant stimulates this production with chemical signals, and benefits from its symbionts' increased competitiveness because the bacterium helps the plant resist infection.

Journal Paper:
Ogran A, Yardeni EH, Keren-Paz A, Bucher T, Jain R, Gilhar O, Kolodkin-Gal I. 2019. The Plant Host Induces Antibiotic Production To Select the Most-Beneficial Colonizers. Appl Environ Microbiol 85:e00512-19.

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20. 396: Bacteria Boost Blood Bank Budgets
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Description:

This episode: Bacterial enzymes could convert donated blood to be compatible with more people in need!

Download Episode (8.0 MB, 11.7 minutes)

Show notes:
Microbe of the episode: Cucumber leaf spot virus

News item

Takeaways
Blood transfusions using donated blood save many lives. Unfortunately, most donations can't be given to just anyone that needs blood; there must be a match in blood type between donor and recipient, or else a life-threatening reaction could occur in the recipient's body. So type A can't donate to type B, or vice versa, but type O is compatible with the other types.

In this study, bacterial enzymes found in human gut microbes have the ability to cleave off the unique type A and B sugars on the surface of red blood cells. This could allow the conversion of all donated blood to type O, greatly increasing the blood bank supply, but more testing is needed to develop the process.

Journal Paper:
Rahfeld P, Sim L, Moon H, Constantinescu I, Morgan-Lang C, Hallam SJ, Kizhakkedathu JN, Withers SG. 2019. An enzymatic pathway in the human gut microbiome that converts A to universal O type blood. Nat Microbiol 4:1475–1485.

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21. 395: Many Microbiome Mindsets
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Description:

This episode: Five different ways of thinking about our relationship with our microbes!

Download Episode (20.4 MB, 29.8 minutes)

Show notes:
Microbe of the episode: Tuhoko rubulavirus 3

News item

Takeaways
The microbiome by itself is an amazingly complicated community of many different species, with different lifestyles and metabolisms, all living together in competition and cooperation. On top of that, interactions between the microbiome and our body and our lifestyle multiply the complexity even more.

This article explores five different views of the microbiome and how it fits into our body (or how the body fits in with the microbiome). From the organ view to the ecosystem view, each is a different way of looking at the different functions, dynamic patterns, and integration of the microbiome in its host, and each provides guidance for how to approach treatment of disease and maintenance of health.

Journal Paper:
Morar N, Bohannan BJM. 2019. The Conceptual Ecology of the Human Microbiome. The Quarterly Review of Biology 94:149–175.

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22. 394: Skinny Cell Structure Supports
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Description:

This episode: Not as simple as it sounds—how rod-shaped bacteria maintain their shape!

Thanks to Dr. Ethan Garner for his contribution!

Download Episode (6.3 MB, 9.2 minutes)

Show notes:
Microbe of the episode: Erwinia virus M7

News item

Takeaways
Microbes seem like they should be a lot simpler than large multicellular organisms, but even what seems like it should be a simple system in microbes can be surprisingly complex. In this case, the system bacteria maintaining their particular cell shape.

Spherical cells have it easier: just add more cell material at every point. But for rods, they must make the cell longer without making it wider. How do they accomplish this? Two groups of proteins work together to help rod-shaped species grow, but how they work wasn't specifically known.

In this study, it was found that one group of proteins adds more cell material as it moves around the circumference, while the other adds structure to the cell that allows it to maintain shape. The more of these structural proteins present, the thinner the cell can stay.

Journal Paper:
Dion MF, Kapoor M, Sun Y, Wilson S, Ryan J, Vigouroux A, van Teeffelen S, Oldenbourg R, Garner EC. 2019. Bacillus subtilis cell diameter is determined by the opposing actions of two distinct cell wall synthetic systems. Nat Microbiol 4:1294–1305.

Other interesting stories:



23. 393: Prokaryote Partner Prevents Pathogen Potency
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Description:

This episode: Bacterial symbionts of amoebas help them survive bacterial infection, and prevent pathogens from spreading to others as much!

Download Episode (7.5 MB, 8.1 minutes)

Show notes:
Microbe of the episode: Eubacterium dolichum

News item

Takeaways
Amoebas are free-living, single-celled organisms, but they have some things in common with some cells of our immune system (macrophages). For example, certain bacterial pathogens can infect both in similar ways. So it can be useful to study the interactions of amoebas and bacteria to learn about our own immune defenses.

In this study, the amoeba Acanthamoeba castellanii has another bacterial symbiont that helps it resist killing by the bacterial pathogen Legionella pneumophila. Once the amoebas recovered from the infection, they were more resistant to future challenges. Even better, the symbiont prevented the pathogen from transforming into a more spreadable form like it does when infecting amoebas alone.

Journal Paper:
König L, Wentrup C, Schulz F, Wascher F, Escola S, Swanson MS, Buchrieser C, Horn M. 2019. Symbiont-Mediated Defense against Legionella pneumophila in Amoebae. mBio 10:e00333-19.

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24. 392: Magnetic Microbes Maneuver Marine Manager
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Description:

This episode: A marine protist can orient itself along magnetic fields thanks to bacterial symbionts on its surface that make magnetic nanoparticles!

Download Episode (7.2 MB, 7.9 minutes)

Show notes:
Microbe of the episode: Chlorocebus pygerythrus polyomavirus 3

Takeaways
Various kinds of bacteria can orient their movement along a magnetic field. These are called magnetotactic, and they use this ability to swim toward or away from the surface of their aquatic habitat, to adjust their oxygen exposure according to their preference.

No eukaryotic microbes have yet been discovered that can sense and react to magnetic fields like these prokaryotes. In this study, however, a protist was discovered that can do it via its partnership with ectosymbionts, or bacteria attached to its surface, that sense magnetism and orient their host's movement. In return, factors of the host's metabolism may feed its symbionts.

Journal Paper:
Monteil CL, Vallenet D, Menguy N, Benzerara K, Barbe V, Fouteau S, Cruaud C, Floriani M, Viollier E, Adryanczyk G, Leonhardt N, Faivre D, Pignol D, López-García P, Weld RJ, Lefevre CT. 2019. Ectosymbiotic bacteria at the origin of magnetoreception in a marine protist. Nat Microbiol 4:1088–1095.

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25. 391: Slime Stores Sodium Sensibility
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Description:

This episode: Slime molds can learn to get used to salt and hold on to that memory even after a period of dormancy!

Download Episode (8.9 MB, 9.7 minutes)

Show notes:
Microbe of the episode: Nocardia transvalensis

News item

Takeaways
Slime mold Physarum polycephalum has many surprisingly intelligent abilities, despite being only a single cell. Studying how these abilities work in the cell can teach us new ways that life can do things. The ability of interest here is habituation, or learning not to avoid a chemical that seems unpleasant to the cell but is not necessarily harmful, especially with a food reward.

The slime mold can become habituated to salt, in this case, learning to tolerate it enough to pass through a gradient of increasing concentration to get to some food as quickly as it crosses the same distance with no salt present. The scientists here learned that the cell takes up sodium into itself as it habituates, and holds onto both sodium and its memory through a period of hibernation.

Journal Paper:
Boussard A., Delescluse J., Pérez-Escudero A., Dussutour A. 2019. Memory inception and preservation in slime moulds: the quest for a common mechanism. Phil Trans R Soc B 374:20180368.

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26. 390: Friendly Phages Find Foes
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Description:

This episode: Bacteria carry deadly phages and use them against rival strains!

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Show notes:
Microbe of the episode: Bifidobacterium bifidum

News item

Takeaways
Bacteria such as Escherichia coli live in environments such as the gut with many other types of microbes, and often develop communities of microbes cooperating and/or competing with each other for resources. But in order to cooperate or compete, bacteria must first be able to identify and discriminate between themselves and others. Sometimes microbes do this by exchanging membrane molecules, or secreting chemical signals that only partners can detect, or transferring plasmids or producing antimicrobial compounds that kill competitors.

In the current study, scientists discovered a strain of E. coli that carries around phages that help them distinguish other strains and compete with them. When this strain encounters another, the phages it carries attack and destroy cells of the other strain, while leaving the carrier strain mostly unharmed. This strategy is not without cost, though; the viral proteins take resources to produce, and when there's no competing strains around, the virus can attack its carrier to some extent.

Journal Paper:
Song S, Guo Y, Kim J-S, Wang X, Wood TK. 2019. Phages Mediate Bacterial Self-Recognition. Cell Reports 27:737-749.e4.

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27. 389: Prokaryotes Pacify Protein Problem
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Description:

This episode: Engineered bacteria could help people digest an essential nutrient when they can't digest it themselves!

Download Episode (8.5 MB, 9.3 minutes)

Show notes:
Microbe of the episode: Kadipiro virus

News item (paywall)

Science-Based Medicine blog article about phenylketonuria, Synlogic, and engineering bacteria to treat this disorder, with lots of good detail

Takeaways
Treating genetic disorders can be very difficult. Sometimes they can be managed, with lifestyle, diet, or medication, but cure has almost always been out of the picture. With a disorder such as phenylketonuria (PKU), for example, in which the body is unable to fully metabolize the amino acid phenylalanine, diet and medication may work to some extent.

In an effort to provide better options for PKU, scientists at Synlogic, Inc have created a strain of Escherichia coli that produces phenylalanine-degrading enzymes in the gut. The hope is that ingesting this bacterium could allow PKU patients to be less restrictive with their diet.

Journal Paper:
Isabella VM, Ha BN, Castillo MJ, Lubkowicz DJ, Rowe SE, Millet YA, Anderson CL, Li N, Fisher AB, West KA, Reeder PJ, Momin MM, Bergeron CG, Guilmain SE, Miller PF, Kurtz CB, Falb D. 2018. Development of a synthetic live bacterial therapeutic for the human metabolic disease phenylketonuria. Nat Biotechnol 36:857–864.

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28. 388: Floor Fungi Fracture Phthalates
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Description:

This episode: Microbes in household dust help degrade potentially harmful plasticizer chemicals!

Thanks to Ashleigh Bope for her contribution!

Download Episode (6.7 MB, 7.3 minutes)

Show notes:
Microbe of the episode: Rosa rugosa leaf distortion virus

News item

Takeaways
Modern life and technology comes with modern challenges, including exposure to chemicals in building materials and such that humans didn't encounter much before the last few generations. Phthalate esters, found in PVC and other materials, can accumulate in homes and cause some problems, especially in children.

Modern life is also new to microbes, but they are very adaptable and versatile. In this study, microbes in household dust show some ability to break down the phthalates over time. Whether this activity is significant and beneficial to residents remains to be discovered.

Journal Paper:
Bope A, Haines SR, Hegarty B, Weschler CJ, Peccia J, Dannemiller KC. Degradation of phthalate esters in floor dust at elevated relative humidity. Environ Sci: Processes Impacts.

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29. 387: Carbonate Creators Combat Cracking
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Description:

This episode: Bacteria strengthen concrete while helping to prevent damage from road salts!

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Show notes:
Microbe of the episode: Azospirillum brasilense

News item

Takeaways
Winter is a bad time for concrete outside. Water seeps into cracks and freezes, causing bigger cracks that widen into potholes. Even the road salts used to keep water from freezing can react with compounds in the cement to break down the structure of the concrete.

This study looks to bacteria for a solution for protecting concrete from these reactions. Sporosarcina pasteurii, given the right nutrients, can take the harmful salt compounds and turn them into minerals that strengthen the concrete instead of weakening it.

Journal Paper:
Ksara M, Newkirk R, Langroodi SK, Althoey F, Sales CM, Schauer CL, Farnam Y. 2019. Microbial damage mitigation strategy in cementitious materials exposed to calcium chloride. Construction and Building Materials 195:1–9.

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30. 386: Cupola Contaminant Cleaners
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Description:

This episode: Bacteria help gently clean residue off artworks painted on stone!

Download Episode (5.6 MB, 6.1 minutes)

Show notes:
Microbe of the episode: Cellulophaga virus Cba171

Takeaways
More and more cleaning products these days contain an ingredient called "enzymes." These are proteins that break down contaminants biologically instead of just removing them chemically, in a targeted manner.

In a similar approach, this study explores applying bacteria directly to classic artwork painted directly on stone, to clean up residues on the surface. These bacteria can produce enzymes on site and degrade the contaminants while leaving the underlying paint intact.

Journal Paper:
Ranalli G, Zanardini E, Rampazzi L, Corti C, Andreotti A, Colombini MP, Bosch‐Roig P, Lustrato G, Giantomassi C, Zari D, Virilli P. 2019. Onsite advanced biocleaning system on historical wall paintings using new agar-gauze bacteria gel. J Appl Microbiol 126:1785–1796.

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31. 385: Prokaryotes Protect Paper
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Description:

This episode: Bacteria produce antifungal compounds that can protect paper from fungal deterioration!

Download Episode (6.8 MB, 7.4 minutes)

Show notes:
Microbe of the episode: Acetobacter aceti

Takeaways
Paper is a very useful information storage medium, but it is also somewhat delicious for microbes that can break it down as food, degrade the quality, and cause indelible stains and discoloration under the right conditions. Preventing this usually requires careful control, such as keeping humidity low, for storing paper for long periods.

In this study, scientists tested the ability of the bacterium Lysobacter enzymogenes to protect paper via the antifungal compounds it produces. This first required filtering out the pigments that the bacteria produced, to prevent them from discoloring the paper. Once a method for this filtering was in place, they found the bacterial culture supernatant could significantly reduce fungal growth on various kinds of paper, and protect the paper from staining and degradation.

Journal Paper:
Chen Z, Zou J, Chen B, Du L, Wang M. 2019. Protecting books from mold damage by decreasing paper bioreceptivity to fungal attack using de-coloured cell-free supernatant of Lysobacter enzymogenes C3. J Appl Microbiol 126:1772–1784.

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32. 384: Moss Materials Modify Microbiota
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Description:

This episode: Contact with soil materials and moss causes significant, though short-term, changes in the skin microbiota!

Thanks to Dr. Mira Grönroos for her contribution!

Download Episode (7.1 MB, 7.75 minutes)

Show notes:
Microbe of the episode: Leonurus mosaic virus

Takeaways
Exposure to microbes throughout life is thought to help calibrate the immune system to some extent, reducing the risk of allergies and asthma without losing defense against pathogens. In this study, rubbing soil or packets of moss on the skin changed the composition of the skin microbiota temporarily, so this may be a way to help with this important type of exposure, but it is not yet known how to achieve optimal long-term effects.

Journal Paper:
Grönroos M, Parajuli A, Laitinen OH, Roslund MI, Vari HK, Hyöty H, Puhakka R, Sinkkonen A. 2019. Short-term direct contact with soil and plant materials leads to an immediate increase in diversity of skin microbiota. MicrobiologyOpen 8:e00645.

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33. 383: Communities Carry Communicable Communities
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Description:

I'm back! This episode: Looking at how people in different villages share microbes!

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Show notes:
Microbe of the episode: Cristispira pectinis

Takeaways
Our microbiota, the communities of microbes living in and on our bodies, are incredibly diverse and varied. Each person's is different, and they can change drastically over time with changes in location, diet, lifestyle, and other factors.

Learning how our microbiota forms and changes and functions is important, because it can affect many aspects of health. In this study, villagers in the islands of Fiji share microbes with others in the same and other villages, but not always in patterns that might be expected.

Journal Paper:
Brito IL, Gurry T, Zhao S, Huang K, Young SK, Shea TP, Naisilisili W, Jenkins AP, Jupiter SD, Gevers D, Alm EJ. Transmission of human-associated microbiota along family and social networks. Nat Microbiol.

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34. 382: Small Scavengers Suck Sizable Cells
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Description:

This episode: Fungus-hunting amoebas have different strategies for detecting and preying on single-celled and filamentous fungi!

Also, a personal note: I'm going to be taking a few weeks off the podcast to be able to take full advantage of spring, but I'll be back as soon as the weather gets too hot.

Download Episode (7.5 MB, 8.2 minutes)

Show notes:
Microbe of the episode: Chondromyces catenulatus

Takeaways
Amoebas in the microbial world are like powerful predators, going around gobbling up whatever they find that's small enough, by a process called phagocytosis, in which they surround their prey with their cell membrane and engulf it. It's similar to macrophages or white blood cells as part of our immune system in our bodies.

The prey of amoebas includes bacteria, large viruses, and single-celled fungi called yeasts. In this study, scientists showed that some yeasts make great food sources for a certain kind of amoeba called Protostelium aurantium, while others either lack nutritional value or hide from the predators by covering up certain recognition molecules on their cell wall.

They found that the amoebas could also consume the spores of filamentous fungi, and could even attack the filaments, or hyphae. In this latter case, instead of engulfing the large filaments, they pierced the cells and extracted their contents, an approach named ruphocytosis, from the Greek for suck or slurp.

Journal Paper:
Radosa S, Ferling I, Sprague JL, Westermann M, Hillmann F. The different morphologies of yeast and filamentous fungi trigger distinct killing and feeding mechanisms in a fungivorous amoeba. Environ Microbiol.

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35. 381: Chlorophyll Can Convey Cancer Characteristics
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Description:

This episode: Pigmented bacteria can be used in a cancer imaging technique that combines light and sound!

Download Episode (8.9 MB, 9.75 minutes)

Show notes:
Microbe of the episode: Streptomyces bellus

Takeaways
Because "cancer" is a general term that describes many different forms of disease affecting different cells in different parts of the body, effective cancer treatment relies on understanding the location and physiology of the cancer in a given patient. New imaging technologies for diagnosis and analysis of cancer and for cancer research can be very valuable, especially if they don't require big investments of money and space.

One promising imaging technology is called multispectral optoacoustic imaging, or MSOT. This uses pulses of light to create vibrations as pigments in tissues absorb the light and undergo thermal expansion; these vibrations are then detected by ultrasound technology. This approach allows good resolution and depth of imaging without large equipment like MRI machines, but the best results require adding pigments into the body.

In this study, scientists showed that the photosynthetic pigments of purple non-sulfur bacteria can be useful in this optoacoustic imaging, providing a somewhat long-term, nontoxic approach. It proved especially interesting when they discovered that the wavelength spectrum changing over time was an indication of macrophage activity in the tumors.

Journal Paper:
Peters L, Weidenfeld I, Klemm U, Loeschcke A, Weihmann R, Jaeger K-E, Drepper T, Ntziachristos V, Stiel AC. 2019. Phototrophic purple bacteria as optoacoustic in vivo reporters of macrophage activity. Nat Commun 10:1191.

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36. 380: Plant Promoter Produces Polymer
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Description:

This episode: A microbe that boosts plant growth needs to make storage polymers for both itself and the plant's sake!

Download Episode (7.1 MB, 7.75 minutes)

Show notes:
Microbe of the episode: Suid gammaherpesvirus 3

Takeaways
Bacteria that promote plant growth are fascinating and not too hard to find. Plants and microbes make good partners by each contributing something the other needs. Plants make sugars via photosynthesis that microbes can use as food, and microbes can gather nutrients that plants can't make, can drive off pathogens, and can contribute to plant growth in other ways.

However, plants aren't making sugars all the time, because the sun goes down every day. So what do partner microbes do at these times? In this study, a beneficial microbe Herbaspirillum seropedicae was found to produce a storage compound called polyhydroxyalkanoate, or PHA, that it could use to store food for times of scarcity. Mutants of this microbe that could not make the storage compound weren't very beneficial for their plant partners.

Journal Paper:
Alves LPS, Amaral FP do, Kim D, Bom MT, Gavídia MP, Teixeira CS, Holthman F, Pedrosa F de O, Souza EM de, Chubatsu LS, Müller-Santos M, Stacey G. 2019. Importance of Poly-3-Hydroxybutyrate Metabolism to the Ability of Herbaspirillum seropedicae To Promote Plant Growth. Appl Environ Microbiol 85:e02586-18.

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37. 379: Photons Facilitate Faster Flourishing
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Description:

This episode: Light increases the growth even of some bacteria that don't harvest its energy!

Download Episode (9.0 MB, 9.75 minutes)

Show notes:
Microbe of the episode: Methylococcus thermophilus

News item

Takeaways
Light from the sun is one of the fundamental sources of energy for life on this planet. Plants and other phototrophs—photosynthetic organisms that get their energy mainly from light—form the foundation of the food web, and organisms that feed on them or that feed on organisms that feed on them are all dependent on the ability to capture the sun's rays.

There are other ways to benefit directly from the sun's energy, besides photosynthesis—some microbes have enzymes that use light energy to repair damage to DNA (the same damage that is caused by ultraviolet light), and we use sunlight to synthesize vitamin D.

In this study, however, microbes are discovered to grow faster in the presence of light despite not being phototrophs or producing any light-harvesting proteins. The scientists discover some possible light-sensing proteins, though, that could regulate these microbes' behavior, allowing them to synchronize their growth cycles to phototroph partners in aquatic environments.


Journal Paper:
Maresca JA, Keffer JL, Hempel P, Polson SW, Shevchenko O, Bhavsar J, Powell D, Miller KJ, Singh A, Hahn MW. Light modulates the physiology of non-phototrophic Actinobacteria. J Bacteriol JB.00740-18.

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38. 378: Medusa Makes Marble Microbes
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Description:

This episode: Newly discovered giant virus from a hot spring turns its amoeba hosts to stone!

Download Episode (6.7 MB, 7.3 minutes)

Show notes:
Microbe of the episode: Listeria virus P70

News item

Takeaways
Viruses come in endless different shapes, sizes, and genetic configurations. Even within the group called giant viruses there is a large amount of variety. Many of their genes are unknown, without homology to any other sequences we have acquired in other areas of life. There is great potential to learn interesting things from these viruses.

In this study, a new giant virus is discovered. Like many others, this infects amoebas, and causes them to transform from dynamic, shape-shifting cells into hard little cyst-like circles. This ability gave it the name Medusavirus. It's the first giant virus found in a relatively hot environment (a hot spring), and among other interesting features, it shows signs of multiple instances of gene transfer to and from its amoeba host.

Journal Paper:
Yoshikawa G, Blanc-Mathieu R, Song C, Kayama Y, Mochizuki T, Murata K, Ogata H, Takemura M. 2019. Medusavirus, a novel large DNA virus discovered from hot spring water. J Virol JVI.02130-18.

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39. 377: Distributed Defense-Defeating Devices
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Description:

This episode: Newly discovered CRISPR-inhibiting genes are found in many different bacterial groups!

Download Episode (8.0 MB, 8.8 minutes)

Show notes:
Microbe of the episode: Borrelia mazzottii

News item

Takeaways
The discovery of the microbial immune system, CRISPR-Cas, changed many things about the way we think of microbial ecology and interactions with microbe-infecting viruses. The CRISPR-Cas system can learn to detect new threats by capturing bits of their genetic sequences and using these to target the Cas proteins to chop up any such sequences that make it into the cytoplasm. This can greatly increase microbial survival in certain ecosystems in which viruses regularly kill a large percentage of the microbial population.

To overcome this defense, a virus has to adapt, either by acquiring mutations that change its sequence, thus escaping detection, or by acquiring anti-CRISPR proteins that shut down the microbial defense directly. These possibilities make the complex ecology even more interesting.

In this study, scientists develop a clever method for screening for new anti-CRISPR genes, and go searching for them in samples from various places (soil, animal guts, human gut). They find several new examples, which turn out to be found in many different kinds of species in many different environments.

Journal Paper:
Uribe RV, Helm E van der, Misiakou M-A, Lee S-W, Kol S, Sommer MOA. 2019. Discovery and Characterization of Cas9 Inhibitors Disseminated across Seven Bacterial Phyla. Cell Host & Microbe 25:233-241.e5.

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40. 376: Pressurized Pollutant Pulls Products
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Description:

This episode: Supercritical carbon dioxide and bacteria that can grow in it make a great combination for biofuel production!

Download Episode (9.4 MB, 10.2 minutes)

Show notes:
Microbe of the episode: Flexibacter aggregans

Takeaways
Biofuels are an important part of humanity's move away from non-renewable resources. They have a higher energy density than batteries are yet able to achieve, giving them significant advantages for transportation purposes in which tapping into an electric grid isn't possible. Depending on the biofuel, they also have the advantage of existing infrastructure: we don't need to build a whole new system of charging or refueling stations, but can use the systems already in place.

However, biofuels as a collection of technologies still need some refinements. Yields for the more potentially sustainable approaches are low, and the lower the concentration of a soluble fuel, the more difficult it is to separate it from the non-fuel components of a fermentation. Microbial products also face the risk of contamination of a fermentation by unwanted organisms that use up the substrate without producing desirable products.

In this study, supercritical carbon dioxide is considered as a fix for both of these problems. The gas is pressurized to a point at which it is indistinguishable from liquid. A strain of Bacillus megaterium is specially selected as capable of growing and fermenting in this environment, while contaminants are inhibited. The solvent potential of supercritical carbon dioxide also serves as a way to extract the biofuel product—in this case, isobutanol—from the aqueous part of the culture medium. While it needs some development, this approach yields promising results.

Journal Paper:
Boock JT, Freedman AJE, Tompsett GA, Muse SK, Allen AJ, Jackson LA, Castro-Dominguez B, Timko MT, Prather KLJ, Thompson JR. 2019. Engineered microbial biofuel production and recovery under supercritical carbon dioxide. Nat Commun 10:587.

Other interesting stories:

 

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41. 375: Prepared Pathogen Preserves Perception
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Description:

This episode: A cancer-killing virus could help increase success of treatment of a form of eye cancer in children!

Download Episode (8.0 MB, 8.7 minutes)

Show notes:
Microbe of the episode: Acanthamoeba polyphaga mimivirus

News item

Takeaways
Cancer obviously is a serious concern, and can be tricky to treat because there are endless varieties in all different places in the body, each of which can have its own expected progression, aggressiveness, and methods of treatment to take into account.

Even more serious is when the cancer is in very young children, as is often the case with a cancer of the eye called retinoblastoma. There are about 8000 cases of this disease per year, and when treatment is unsuccessful, it can lead to the loss of one or both eyes.

In this study, investigators looked into using a cancer-targeting, oncolytic virus to complement the normal treatment of chemotherapy. The virus for the most part remained localized to the eye where it should be, and targeted the cancer instead of healthy cells, and so seems promising. In the small trial with two patients included in this study, the virus didn't cause a complete recovery, but showed some modest promising results.

Journal Paper:
Pascual-Pasto G, Bazan-Peregrino M, Olaciregui NG, Restrepo-Perdomo CA, Mato-Berciano A, Ottaviani D, Weber K, Correa G, Paco S, Vila-Ubach M, Cuadrado-Vilanova M, Castillo-Ecija H, Botteri G, Garcia-Gerique L, Moreno-Gilabert H, Gimenez-Alejandre M, Alonso-Lopez P, Farrera-Sal M, Torres-Manjon S, Ramos-Lozano D, Moreno R, Aerts I, Doz F, Cassoux N, Chapeaublanc E, Torrebadell M, Roldan M, König A, Suñol M, Claverol J, Lavarino C, De TC, Fu L, Radvanyi F, Munier FL, Catalá-Mora J, Mora J, Alemany R, Cascalló M, Chantada GL, Carcaboso AM. 2019. Therapeutic targeting of the RB1 pathway in retinoblastoma with the oncolytic adenovirus VCN-01. Sci Transl Med 11:eaat9321.

Other interesting stories:

Exploring how microbes can influence the flavor of coffee

 

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42. 374: Microbes Muzzle Malicious Metal
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Description:

This episode: Mouse gut microbes, from mice or from human donors, can protect mice against arsenic toxicity!

Download Episode (6.3 MB, 6.9 minutes)

Show notes:
Microbe of the episode: Streptomyces griseus

News item

Takeaways
Our gut microbes benefit us in many ways, including nutritionally—by producing vitamins and helping to digest food—and by helping us in defense against pathogens and other immunological threats.

Many things we do can affect our gut microbes too, positively or negatively. What we eat, toxins we encounter, and other aspects of lifestyle can damage our microbial communities.

In this study, we see that the reverse could be true, that gut microbes, and specifically one called Faecalibacterium prausnitzii, can protect their host against toxins such as arsenic.

Journal Paper:
Coryell M, McAlpine M, Pinkham NV, McDermott TR, Walk ST. 2018. The gut microbiome is required for full protection against acute arsenic toxicity in mouse models. Nat Commun 9:5424.

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43. 373: Plant Pilots Prevent Parching
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Description:

This episode: Beneficial fungi found inside wild grain plants help wheat plants grow better with less water!

Download Episode (7.1 MB, 7.75 minutes)

Show notes:
Microbe of the episode: Beijerinckia indica

Takeaways
As we have microbial communities in our guts, on our skin, and in various other places in and on our bodies, plants also have beneficial microbial symbionts around their roots, on their leaf surfaces, and even inside their tissues. These microbes can be bacteria, fungi, or other, and can help plants gather nutrients, resist diseases or pests, and other things.

In this study, some fungi living in grain plants—called endophytes, or "inside plants"—can help wheat tolerate drought and grow better with less water. Studying this system could lead to breakthroughs in wheat farming, all thanks to microbes.

Journal Paper:
Llorens E, Sharon O, Camañes G, García‐Agustín P, Sharon A. Endophytes from wild cereals protect wheat plants from drought by alteration of physiological responses of the plants to water stress. Environ Microbiol.

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44. 372: Roundworm Riders Repel Raiders
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Description:

This episode: Bacteria that help nematodes prey on insects also help keep fungi from stealing their kills!

Download Episode (7.4 MB, 8.1 minutes)

Show notes:
Microbe of the episode: Artogeia rapae granulovirus

Takeaways
Soil is an incredibly complex ecosystem, with many different interactions constantly happening between plants, insects, bacteria, fungi, and other organisms, not to mention a large variety of shifting environmental conditions. All of these are competing with some and cooperating with others to try to survive and thrive the best they can.

One interesting interaction takes place between small roundworms in the soil, called nematodes, and bacteria they carry around that cause disease in insects. These nematodes prey on insects by injecting the bacteria into them, which kill and start digesting the insects. The nematodes then feed on the insects and the bacteria until the resources have been exhausted, and then move on to the next insect, taking some bacteria with them again.

In this study, the scientists wondered how these partners deal with competitors in the soil that might want to take advantage of their resources. They discover that the bacteria produce compounds that can repel and inhibit fungi that might otherwise steal their kills.

Journal Paper:
Shan S, Wang W, Song C, Wang M, Sun B, Li Y, Fu Y, Gu X, Ruan W, Rasmann S. The symbiotic bacteria Alcaligenes faecalis of the entomopathogenic nematodes Oscheius spp. exhibit potential biocontrol of plant- and entomopathogenic fungi. Microb Biotechnol.

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45. 371: Cell Stalker Senses Signals
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Description:

This episode: Phages eavesdrop on bacterial communications to attack at the perfect moment!

Thanks to Justin Silpe and Dr. Bonnie Bassler for their contributions!

Download Episode (11.1 MB, 12.2 minutes)

Show notes:
Microbe of the episode: Artichoke Aegean ringspot virus

News item

Takeaways
Even organisms as small as bacteria can, and often do, communicate with each other through a process called quorum sensing, in which each cell releases a small amount of a certain chemical into their surroundings. When the population is large enough that the concentration of this chemical builds up to a certain level, the cells in the population change their behavior. The specifics of this change depend on the species and the situation.

But since this chemical signal is released into the environment, anything around that can sense it can listen in on the communications of a bacterial population. In this study, Justin Silpe and Dr. Bonnie Bassler find a type of virus that uses such a chemical communication as a signal to come out of stasis and hijack a whole population of bacteria at once!

Journal Paper:
Silpe JE, Bassler BL. 2019. A Host-Produced Quorum-Sensing Autoinducer Controls a Phage Lysis-Lysogeny Decision. Cell 176:268-280.E13.

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46. 370: Magnets Make Messenger More Moveable
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Description:

This episode: Enhancing a virus with magnetic nanoparticles and CRISPR-Cas gene editing abilities makes it a good vector for genetic therapies!

Download Episode (11.2 MB, 12.25 minutes)

Show notes:
Microbe of the episode: Staphylococcus virus S253

News item

Takeaways
Gene delivery, getting genetic content for gene therapy to the correct tissues in an organism, has long been a very tricky problem. And genetic modification, making specific changes at a specific place in a genome, is also difficult.

Viruses can help with both delivery and modification, but they're often not specific and targeted enough to be effective, or even safe. Off-target effects could be harmful or even deadly, potentially resulting in cancer.

In this study, a virus is modified with nanotechnology in the form of tiny magnets to allow humans to target it to specific tissues, and given the ability to modify specific genes using the bacterial CRISPR-Cas system. These modifications potentially make this gene delivery system much more safe and effective.

Journal Paper:
Zhu H, Zhang L, Tong S, Lee CM, Deshmukh H, Bao G. 2018. Spatial control of in vivo CRISPR–Cas9 genome editing via nanomagnets. Nat Biomed Eng.

Other interesting stories:

 

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47. 369: Powering Purple Prokaryote Protonation
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Description:

This episode: Purple phototrophic bacteria could use certain kinds of wastewater, along with electric current, to produce valuable products like hydrogen without much waste!

Thanks to Dr. Ioanna Vasiliadou for her contribution!

Download Episode (12.7 MB, 13.9 minutes)

Show notes:
Microbe of the episode: Streptomyces tendae

News item

Takeaways
Purple phototrophic bacteria can take light energy and use it to help power their metabolism. They're not dependent on it like plants, but can use light or other energy sources for their versatile metabolism.

This versatility makes them very interesting candidates for industrial biotechnology applications. These bacteria can take in various combinations of nutrients and produce a number of different valuable products, including protein-rich feed, bioplastics, and biofuels such as hydrogen gas.

Today's study shows they can also take up electrons directly to help make their biofuel production process even more environmentally sustainable.

Journal Paper:
Vasiliadou IA, Berná A, Manchon C, Melero JA, Martinez F, Esteve-Nuñez A, Puyol D. 2018. Biological and Bioelectrochemical Systems for Hydrogen Production and Carbon Fixation Using Purple Phototrophic Bacteria. Front Energy Res 6:107.

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48. 368: Prokaryotes Promote Passing Parent Peculiarities
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Description:

This episode: Fruit fly gut microbes can mediate non-genetic traits passed from parents to offspring!

Thanks to Dr. Per Stenberg for his contribution!

Download Episode (10.0 MB, 10.9 minutes)

Show notes:
Microbe of the episode: Bifidobacterium breve

News item

Takeaways
Heritability of traits is essential for evolution; if an ability can't be passed on from generation to generation, then natural selection can't act on it on a population-wide level.

An organism's genome is the source of most heritable traits, as DNA gets passed on to offspring, but a number of other ways of passing on traits have been discovered, in the field of epigenetics.

In this study, the gut microbes from fruit flies raised in one temperature could affect the gene expression of their offspring raised in a different temperature, compared to flies that had been kept at the latter temperature over both generations. While the effects on fly fitness or behavior are not yet known, these results suggest that gut microbes, transmitted from parents to offspring, could be another mechanism of heritability.

Journal Paper:
Zare A, Johansson A-M, Karlsson E, Delhomme N, Stenberg P. 2018. The gut microbiome participates in transgenerational inheritance of low-temperature responses in Drosophila melanogaster. FEBS Lett 592:4078–4086.

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49. BacterioFiles 367 - Migrating Modifies Microbiota
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Description:

This episode: Women who immigrated to the US from southeast Asia lost much of their gut microbiota diversity, resulting in a microbe community similar to the typical American!

Download Episode (9.3 MB, 10.2 minutes)

Show notes:
Microbe of the episode: Pseudomonas anguilliseptica

News item

Journal Paper:
Vangay P, Johnson AJ, Ward TL, Al-Ghalith GA, Shields-Cutler RR, Hillmann BM, Lucas SK, Beura LK, Thompson EA, Till LM, Batres R, Paw B, Pergament SL, Saenyakul P, Xiong M, Kim AD, Kim G, Masopust D, Martens EC, Angkurawaranon C, McGready R, Kashyap PC, Culhane-Pera KA, Knights D. 2018. US Immigration Westernizes the Human Gut Microbiome. Cell 175:962-972.e10.

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50. BacterioFiles 366 - Globules Get Garbage Gone
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Description:

This episode: Bacteria rid themselves of burdensome waste by ejecting it inside little pieces of their own cell, called minicells!

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Show notes:
Microbe of the episode: Cacao yellow mosaic virus

News item

Journal Papers:
Rang CU, Proenca A, Buetz C, Shi C, Chao L. 2018. Minicells as a Damage Disposal Mechanism in Escherichia coli. mSphere 3:e00428-18.

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51. BacterioFiles 365 - Saccharomycopsis Cells Slay Sickeners
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Description:

This episode: Dr. Klara Junker joins me to discuss her work on the predatory yeast Saccharomycopsis schoenii that can kill the serious pathogenic yeast Candida auris!

Download Episode (11.0 MB, 12.0 minutes)

Show notes:
Microbe of the episode: Lambdapapillomavirus 5

Movies of Saccharomycopsis attacking other yeasts

Journal Papers:
Junker K, Bravo Ruiz G, Lorenz A, Walker L, Gow NAR, Wendland J. 2018. The mycoparasitic yeast Saccharomycopsis schoenii predates and kills multi-drug resistant Candida auris. Sci Rep 8:14959.

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52. BacterioFiles 364 - Polyproteins Promote Producing Pabulum
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Description:

This episode: Engineering other organisms to fix nitrogen by combining the required enzyme components into giant proteins that then get cut into the regular-sized subunit components!

Download Episode (10.5 MB, 11.5 minutes)

Show notes:
Microbe of the episode: Blastochloris sulfoviridis

Journal commentary (paywall)

Journal Papers:
Yang J, Xie X, Xiang N, Tian Z-X, Dixon R, Wang Y-P. 2018. Polyprotein strategy for stoichiometric assembly of nitrogen fixation components for synthetic biology. Proc Natl Acad Sci 115:E8509–E8517.

Other interesting stories:

 

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53. BacterioFiles 363 - Tiny Treasure Tunnels
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Description:

This episode: Intricate networks of tunnels in garnet gemstones seem to have come from tunneling microorganisms!

Thanks to Magnus Ivarsson for his contribution!

Download Episode (5.4 MB, 5.9 minutes)

Show notes:
Microbe of the episode: Streptomyces griseosporeus

News item

Journal Papers:
Ivarsson M, Skogby H, Phichaikamjornwut B, Bengtson S, Siljeström S, Ounchanum P, Boonsoong A, Kruachanta M, Marone F, Belivanova V, Holmström S. 2018. Intricate tunnels in garnets from soils and river sediments in Thailand – Possible endolithic microborings. PLOS ONE 13:e0200351.

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54. BacterioFiles 362 - Combining Chromosomes
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Description:

This episode: Combining all 16 of yeast's chromosomes into one or two only impairs their growth slightly in the lab, but it prevents them from successful mating with wild yeasts!

Download Episode (12.4 MB, 13.6 minutes)

Show notes:
Microbe of the episode: Vibrio succinogenes

News item 1/News item 2

Journal Papers:
Luo J, Sun X, Cormack BP, Boeke JD. 2018. Karyotype engineering by chromosome fusion leads to reproductive isolation in yeast. Nature 560:392–396.
Shao Y, Lu N, Wu Z, Cai C, Wang S, Zhang L-L, Zhou F, Xiao S, Liu L, Zeng X, Zheng H, Yang C, Zhao Z, Zhao G, Zhou J-Q, Xue X, Qin Z. 2018. Creating a functional single-chromosome yeast. Nature 560:331–335.

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55. BacterioFiles 361 - Figuring Fungus's Forcing Fly Functions
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Description:

This episode: Bringing a fungus that makes zombie flies into the lab makes a good model for studying microbial mind-control!

Thanks to Dr. Carolyn Elya for her contribution!

Download Episode (12.1 MB, 13.25 minutes)

Show notes:
Microbe of the episode: Dipteran brevidensovirus 2

News item

Videos of fly fungus infection progression

Journal Papers:
Elya C, Lok TC, Spencer QE, McCausland H, Martinez CC, Eisen M. 2018. Robust manipulation of the behavior of Drosophila melanogaster by a fungal pathogen in the laboratory. eLife 7:e34414.

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56. BacterioFiles 360 - Fellow Phages Fight Fortifications
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Description:

This episode: Bacteriophages with defenses against bacterial CRISPR defenses have to work together to succeed!

Thanks to Drs. Edze Westra and Stineke van Houte for their contributions, and to Calvin Cornell for suggesting this story!

Download Episode (9.6 MB, 10.5 minutes)

Show notes:
Microbe of the episode: Lactobacillus casei subsp. alactosus

News item 1/News item 2

Journal Papers:
Borges AL, Zhang JY, Rollins MF, Osuna BA, Wiedenheft B, Bondy-Denomy J. 2018. Bacteriophage Cooperation Suppresses CRISPR-Cas3 and Cas9 Immunity. Cell 174:917-925.e10.

Landsberger M, Gandon S, Meaden S, Rollie C, Chevallereau A, Chabas H, Buckling A, Westra ER, Houte S van. 2018. Anti-CRISPR Phages Cooperate to Overcome CRISPR-Cas Immunity. Cell 174:908-916.e12.

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57. BacterioFiles 359 - Prokaryotes Provoke Perpendicular Punishment
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Description:

This episode: Some bacteria produce DNA-targeting toxins, which provokes a similar retaliation from other strains. Sometimes this hurts the provoker, but sometimes it is very helpful to them!

Thanks to Dr. Despoina Mavridou for her contribution!

Download Episode (7.9 MB, 8.4 minutes)

Show notes:
Microbe of the episode: Mycobacterium virus Athena

News item

Journal Paper:
Gonzalez D, Sabnis A, Foster KR, Mavridou DAI. 2018. Costs and benefits of provocation in bacterial warfare. Proc Natl Acad Sci 115:7593–7598.

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58. BacterioFiles 358 - elegans Endures Edifying Enterococcus
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Description:

This episode: Roundworms and not-too-irritating bacteria quickly evolve a beneficial relationship when under threat from other bacterial pathogens!

Download Episode (7.5 MB, 8.1 minutes)

Show notes:
Microbe of the episode: Siegesbeckia yellow vein betasatellite

News item

Journal Paper:
Rafaluk‐Mohr C, Ashby B, Dahan DA, King KC. 2018. Mutual fitness benefits arise during coevolution in a nematode-defensive microbe model. Evol Lett 2:246–256.

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59. BacterioFiles 357 - Colossal Contagion Codes Catabolism
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Description:

This episode: A new giant virus infecting marine algae brings its own genes related to fermentation, generating energy in the absence of oxygen!

Thanks to Drs. Chris Schvarcz and Grieg Steward for their contributions!

Download Episode (14 MB, 15.25 minutes)

Show notes:
Microbe of the episode: Borrelia anserina

News item

Journal Paper:
Schvarcz CR, Steward GF. 2018. A giant virus infecting green algae encodes key fermentation genes. Virology 518:423–433.

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60. BacterioFiles 356 - Beams Boost Bolstered Bacteria
http://traffic.libsyn.com/bact... download (audio/mpeg, 10.46Mb)

Description:

This episode: Combining cells with light-absorbing nanomaterials can help tumor-targeting bacteria produce more anticancer compound!

Download Episode (10.4 MB, 11.4 minutes)

Show notes:
Microbe of the episode: Maruca vitrata nucleopolyhedrovirus

Here's a paper I found that actually shows carbon dot nanomaterials enhancing bacterial nitrogen fixation

Journal Paper:
Zheng D-W, Chen Y, Li Z-H, Xu L, Li C-X, Li B, Fan J-X, Cheng S-X, Zhang X-Z. 2018. Optically-controlled bacterial metabolite for cancer therapy. Nat Commun 9:1680.

Other interesting stories:

 

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61. BacterioFiles 355 - Photon Factors Favor Fancy Fuels
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Description:

This episode: Engineering yeast to control their metabolism using light and dark for the production of advanced biofuels and chemicals!

Download Episode (16.1 MB, 17.7 minutes)

Show notes:
Microbe of the episode: Equine arteritis virus

News item

Journal Paper:
Zhao EM, Zhang Y, Mehl J, Park H, Lalwani MA, Toettcher JE, Avalos JL. 2018. Optogenetic regulation of engineered cellular metabolism for microbial chemical production. Nature 555:683–687.

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62. BacterioFiles 354 - Prokaryote Protection Promotes Protein Passing
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Description:

This episode: The bacterial immune system, CRISPR-Cas, can enhance gene transfer via transduction (phages carrying bacteria DNA) despite preventing it via conjugation!

Download Episode (14.9 MB, 16.3 minutes)

Show notes:
Microbe of the episode: Human polyomavirus 8

Journal Paper:
Watson BNJ, Staals RHJ, Fineran PC. 2018. CRISPR-Cas-Mediated Phage Resistance Enhances Horizontal Gene Transfer by Transduction. mBio 9:e02406-17.

Other interesting stories:

 

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63. BacterioFiles 353 - Pathogen Prevents Pathogen Pervasion
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Description:

This episode: Some bacteria that can cause pneumonia can prevent other bacteria from doing the same!

Download Episode (9.6 MB, 10.5 minutes)

Show notes:
Microbe of the episode: Bell pepper mottle virus

Journal Paper:
Reddinger RM, Luke-Marshall NR, Sauberan SL, Hakansson AP, Campagnari AA. 2018. Streptococcus pneumoniae Modulates Staphylococcus aureus Biofilm Dispersion and the Transition from Colonization to Invasive Disease. mBio 9:e02089-17.

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64. BacterioFiles 352 - Staphylococcus Stops Skin Swellings
http://traffic.libsyn.com/bact... download (audio/mpeg, 9.22Mb)

Description:

This episode: A harmless strain of bacteria on the skin produces a compound that can prevent tumors from forming!

Download Episode (9.2 MB, 10 minutes)

Show notes:
Microbe of the episode: Hamiltonella virus APSE1

News item

Journal Paper:
Nakatsuji T, Chen TH, Butcher AM, Trzoss LL, Nam S-J, Shirakawa KT, Zhou W, Oh J, Otto M, Fenical W, Gallo RL. 2018. A commensal strain of Staphylococcus epidermidis protects against skin neoplasia. Sci Adv 4:eaao4502.

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65. BacterioFiles 351 - Tupanvirus Transports Translation Tools
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Description:

This episode: New giant virus has genes for a surprisingly complete system of protein synthesis!

Download Episode (10.1 MB, 11.1 minutes)

Show notes:
Microbe of the episode: Phocid alphaherpesvirus 1

Video of tupanvirus intracellular factory

Journal Paper:
Abrahão J, Silva L, Silva LS, Khalil JYB, Rodrigues R, Arantes T, Assis F, Boratto P, Andrade M, Kroon EG, Ribeiro B, Bergier I, Seligmann H, Ghigo E, Colson P, Levasseur A, Kroemer G, Raoult D, La Scola B. 2018. Tailed giant Tupanvirus possesses the most complete translational apparatus of the known virosphere. Nat Commun 9:749.

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66. BacterioFiles 350 - Microbes Mysteriously Make Methane
http://traffic.libsyn.com/bact... download (audio/mpeg, 11.86Mb)

Description:

This episode: A version of the microbial enzyme that fixes nitrogen can also convert carbon dioxide to methane!

Download Episode (11.8 MB, 12.9 minutes)

Show notes:
Microbe of the episode: Human mastadenovirus D

Journal Paper:
Zheng Y, Harris DF, Yu Z, Fu Y, Poudel S, Ledbetter RN, Fixen KR, Yang Z-Y, Boyd ES, Lidstrom ME, Seefeldt LC, Harwood CS. 2018. A pathway for biological methane production using bacterial iron-only nitrogenase. Nat Microbiol 3:281–286.

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67. BacterioFiles 349 - Magnet Microbes Make Millivolts
http://traffic.libsyn.com/bact... download (audio/mpeg, 6.79Mb)

Description:

This episode: Bacteria that contain tiny magnets can generate an electric current!

Download Episode (6.8 MB, 7.4 minutes)

Show notes:
Microbe of the episode: Mamastrovirus 2

Journal Paper:
Smit B.A., Van Zyl E., Joubert J.J., Meyer W., Prévéral S., Lefèvre C.T., Venter S.N. 2018. Magnetotactic bacteria used to generate electricity based on Faraday’s law of electromagnetic induction. Lett Appl Microbiol 66:362–367.

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68. BacterioFiles 348 - Huge Host Hackers Have Historic Histones
http://traffic.libsyn.com/bact... download (audio/mpeg, 6.00Mb)

Description:

This episode: Giant viruses produce DNA-packing proteins that seem to have branched off from eukaryotes far back in evolutionary history!

Download Episode (6 MB, 6.5 minutes)

Show notes:
Microbe of the episode: Caulobacter maris

News item

Journal Paper:
Erives AJ. 2017. Phylogenetic analysis of the core histone doublet and DNA topo II genes of Marseilleviridae: evidence of proto-eukaryotic provenance. Epigenetics & Chromatin 10:55.

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69. BacterioFiles 347 - Adenovirus Adapter Allows Assignment
http://traffic.libsyn.com/bact... download (audio/mpeg, 7.78Mb)

Description:

This episode: Adding adapters to anti-cancer virus helps it avoid destruction by the body so it can target the tumors!

Thanks to Dr. Andreas Plückthun for his contribution!

Download Episode (7.8 MB, 8.5 minutes)

Show notes:
Microbe of the episode: Tomato leaf curl Vietnam virus

News item

Journal Paper:
Schmid M, Ernst P, Honegger A, Suomalainen M, Zimmermann M, Braun L, Stauffer S, Thom C, Dreier B, Eibauer M, Kipar A, Vogel V, Greber UF, Medalia O, Plückthun A. 2018. Adenoviral vector with shield and adapter increases tumor specificity and escapes liver and immune control. Nat Commun 9:450.

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70. BacterioFiles 346 - Prokaryote Prey Plug Picoalgae
http://traffic.libsyn.com/bact... download (audio/mpeg, 8.88Mb)

Description:

This episode: Very small ocean algae consume bacterial prey of a similar size to themselves by engulfing them only partially!

Download Episode (8.9 MB, 9.7 minutes)

Show notes:
Microbe of the episode: Bradyrhizobium japonicum

Journal Paper:
Kamennaya NA, Kennaway G, Fuchs BM, Zubkov MV. 2018. “Pomacytosis”—Semi-extracellular phagocytosis of cyanobacteria by the smallest marine algae. PLOS Biol 16:e2003502.

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71. BacterioFiles 345 - Super Sonic Cell Sacs
http://traffic.libsyn.com/bact... download (audio/mpeg, 7.56Mb)

Description:

This episode: Protein bags of gas in bacteria could help make ultrasound imaging more versatile!

Download Episode (7.6 MB, 8.25 minutes)

Show notes:
Microbe of the episode: Cronobacter virus Esp2949-1

News item

Journal Paper:
Bourdeau RW, Lee-Gosselin A, Lakshmanan A, Farhadi A, Kumar SR, Nety SP, Shapiro MG. 2018. Acoustic reporter genes for noninvasive imaging of microorganisms in mammalian hosts. Nature 553:86–90.

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72. BacterioFiles 344 - Bacteriophages Bypass Body Barriers
http://traffic.libsyn.com/bact... download (audio/mpeg, 13.28Mb)

Description:

This episode: Phages may be passing through the barriers in our body all the time!

Thanks to Dr. Jeremy Barr for his contribution!

Download Episode (13.2 MB, 14.5 minutes)

Show notes:
Microbe of the episode: Rhodobacter virus RcCronus

Journal Paper:
Nguyen S, Baker K, Padman BS, Patwa R, Dunstan RA, Weston TA, Schlosser K, Bailey B, Lithgow T, Lazarou M, Luque A, Rohwer F, Blumberg RS, Barr JJ. 2017. Bacteriophage Transcytosis Provides a Mechanism To Cross Epithelial Cell Layers. mBio 8:e01874-17.

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73. BacterioFiles 343 - Super Cells Save Susceptible Species
http://traffic.libsyn.com/bact... download (audio/mpeg, 9.73Mb)

Description:

This episode: Very radiation-resistant bacteria can protect other, less-resistant microbes from some of the effects of chronic radiation!

Download Episode (9.7 MB, 10.6 minutes)

Show notes:
Microbe of the episode: Paramecium bursaria Chlorella virus CA4A

News item

Journal Paper:
Shuryak I, Matrosova VY, Gaidamakova EK, Tkavc R, Grichenko O, Klimenkova P, Volpe RP, Daly MJ. 2017. Microbial cells can cooperate to resist high-level chronic ionizing radiation. PLOS ONE 12:e0189261.

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74. BacterioFiles 342 - Cyanide Stops Cell Suckers
http://traffic.libsyn.com/bact... download (audio/mpeg, 7.72Mb)

Description:

This episode: Some bacteria can defend themselves from bacterial predators by producing cyanide!

Thanks to Dr. Robert Mitchell for his contribution!

Download Episode (7.7 MB, 8.4 minutes)

Show notes:
Microbe of the episode: Dyoepsilonpapillomavirus 1

News item

Journal Paper:
Mun W, Kwon H, Im H, Choi SY, Monnappa AK, Mitchell RJ. 2017. Cyanide Production by Chromobacterium piscinae Shields It from Bdellovibrio bacteriovorus HD100 Predation. mBio 8:e01370-17.

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75. BacterioFiles 341 - Cancer Killer Could Cure Cryptic Contagion
http://traffic.libsyn.com/bact... download (audio/mpeg, 8.72Mb)

Description:

This episode: A virus designed to target cancer could also help eliminate hidden HIV infections!

Thanks to Nischal Ranganath for his contribution!

Download Episode (8.7 MB, 9.5 minutes)

Show notes:
Microbe of the episode: Streptomyces pluricolorescens

News item

Journal Paper:
Ranganath N, Sandstrom TS, Schinkel B, C S, Côté SC, Angel JB. 2018. The Oncolytic Virus MG1 Targets and Eliminates Cells Latently Infected With HIV-1: Implications for an HIV Cure. J Infect Dis 217:721–730.

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76. BacterioFiles 340 - Plasmid Promotes Plant Pathogenesis
http://traffic.libsyn.com/bact... download (audio/mpeg, 9.44Mb)

Description:

This episode: Some bacteria living around plants can become pathogenic just by gaining a few genes!

Download Episode (9.4 MB, 10.3 minutes)

Show notes:
Microbe of the episode: Alternanthera yellow vein betasatellite

News item

Journal Paper:
Savory EA, Fuller SL, Weisberg AJ, Thomas WJ, Gordon MI, Stevens DM, Creason AL, Belcher MS, Serdani M, Wiseman MS, Grünwald NJ, Putnam ML, Chang JH. 2017. Evolutionary transitions between beneficial and phytopathogenic Rhodococcus challenge disease management. eLife 6:e30925.

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77. BacterioFiles 339 - Medical Microbiota Measurement
http://traffic.libsyn.com/bact... download (audio/mpeg, 10.57Mb)

Description:

This episode: Fecal microbiota transplants work just as well when taken in pill form as when delivered through a tube!

Download Episode (10.5 MB, 11.5 minutes)

Show notes:
Microbe of the episode: Halobacterium halobium

News item

Journal Paper:
Kao D, Roach B, Silva M, Beck P, Rioux K, Kaplan GG, Chang H-J, Coward S, Goodman KJ, Xu H, Madsen K, Mason A, Wong GK-S, Jovel J, Patterson J, Louie T. 2017. Effect of Oral Capsule- vs Colonoscopy-Delivered Fecal Microbiota Transplantation on Recurrent Clostridium difficile Infection: A Randomized Clinical Trial. J Am Med Assoc 318:1985–1993.

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78. BacterioFiles 338 - Maverick Mouse Microbes Mitigate Maladies
http://traffic.libsyn.com/bact... download (audio/mpeg, 9.83Mb)

Description:

This episode: Gut microbe transplants from wild mice protect lab mice from disease!

Download Episode (9.8 MB, 10.7 minutes)

Show notes:
Microbe of the episode: Cabassou virus

News item

Journal Paper:
Rosshart SP, Vassallo BG, Angeletti D, Hutchinson DS, Morgan AP, Takeda K, Hickman HD, McCulloch JA, Badger JH, Ajami NJ, Trinchieri G, Pardo-Manuel de Villena F, Yewdell JW, Rehermann B. 2017. Wild Mouse Gut Microbiota Promotes Host Fitness and Improves Disease Resistance. Cell 171:1015-1028.e13.

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79. BacterioFiles 337 - Gathering Gut Groupings Graphics
http://traffic.libsyn.com/bact... download (audio/mpeg, 8.78Mb)

Description:

This episode: A simplified bacterial community in mouse guts doesn't have much community structure, relative to other body areas!

Download Episode (8.8 MB, 9.6 minutes)

Show notes:
Microbe of the episode: Rhodomicrobium vannielii

News item

Journal Paper:
Welch JLM, Hasegawa Y, McNulty NP, Gordon JI, Borisy GG. 2017. Spatial organization of a model 15-member human gut microbiota established in gnotobiotic mice. Proc Natl Acad Sci 114:E9105–E9114.

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80. BacterioFiles 336 - Phages Fortify Friendly Fighters
http://traffic.libsyn.com/bact... download (audio/mpeg, 12.94Mb)

Description:

This episode: Phage therapy can work very well when combined with an effective immune response from the host!

Download Episode (12.9 MB, 14.1 minutes)

Show notes:
Microbe of the episode: Gammapapillomavirus 8

News item about "nightmare bacteria"

Journal Paper:
Roach DR, Leung CY, Henry M, Morello E, Singh D, Di Santo JP, Weitz JS, Debarbieux L. 2017. Synergy between the Host Immune System and Bacteriophage Is Essential for Successful Phage Therapy against an Acute Respiratory Pathogen. Cell Host Microbe 22:38-47.e4.

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81. BacterioFiles 335 - Purported Paraprobiotic Potential
http://traffic.libsyn.com/bact... download (audio/mpeg, 11.57Mb)

Description:

This episode: Paraprobiotics, or killed probiotic bacteria, are studied for health effects, but results and study design are questionable!

Download Episode (11.5 MB, 12.6 minutes)

Show notes:
Microbe of the episode: Phlox virus S

Journal Paper:
Nishida K, Sawada D, Kawai T, Kuwano Y, Fujiwara S, Rokutan K. 2017. Para-psychobiotic Lactobacillus gasseri CP2305 ameliorates stress-related symptoms and sleep quality. J Appl Microbiol 123:1561–1570.

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82. BacterioFiles 334 - Measuring Mycelial Moth Muncher Management
http://traffic.libsyn.com/bact... download (audio/mpeg, 8.16Mb)

Description:

This episode: Figuring out the best way to study the spread of a fungus that kills an invasive tree-eating caterpillar pest!

Download Episode (8.2 MB, 8.9 minutes)

Show notes:
Microbe of the episode: Pasteurella aerogenes

News item

Journal Paper:
Bittner TD, Hajek AE, Liebhold AM, Thistle H. 2017. Modification of a Pollen Trap Design To Capture Airborne Conidia of Entomophaga maimaiga and Detection of Conidia by Quantitative PCR. Appl Environ Microbiol 83:e00724-17.

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83. BacterioFiles 333 - Transposons Take Targeting Tool
http://traffic.libsyn.com/bact... download (audio/mpeg, 10.78Mb)

Description:

This episode: Certain transposons, genetic elements that move around the genome on their own, have co-opted the bacterial immune system, CRISPR, to use for jumping to new hosts!

Thanks to Dr. Joseph Peters for his contribution!

Download Episode (10.7 MB, 11.75 minutes)

Show notes:
Microbe of the episode: Streptomyces yokosukanensis

Journal Paper:
Peters JE, Makarova KS, Shmakov S, Koonin EV. 2017. Recruitment of CRISPR-Cas systems by Tn7-like transposons. Proc Natl Acad Sci 114:E7358–E7366.

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84. BacterioFiles 332 - Moth Minors Missing Microbes
http://traffic.libsyn.com/bact... download (audio/mpeg, 14.00Mb)

Description:

This episode: Unlike most animals, caterpillars don't seem to have a resident gut microbe to help them in various ways!

Thanks to Tobin Hammer for his contribution!

Download Episode (14 MB, 15.3 minutes)

Show notes:
Microbe of the episode: Borrelia graingeri

News item

Journal Paper:
Hammer TJ, Janzen DH, Hallwachs W, Jaffe SP, Fierer N. 2017. Caterpillars lack a resident gut microbiome. Proc Natl Acad Sci 114:9641–9646.

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85. BacterioFiles 331 - Password Protein Poisons Pairings
http://traffic.libsyn.com/bact... download (audio/mpeg, 12.47Mb)

Description:

This episode: How social bacteria societies function: by sharing enzyme packages with each other that can contain toxins that are deadly for rivals but not for friends!

Thanks to Chris Vasallo for his contribution!

Download Episode (12.4 MB, 13.6 minutes)

Show notes:
Microbe of the episode: Propionibacterium virus PAD20

News item

Journal Paper:
Vassallo CN, Cao P, Conklin A, Finkelstein H, Hayes CS, Wall D. 2017. Infectious polymorphic toxins delivered by outer membrane exchange discriminate kin in myxobacteria. eLife 6:e29397.

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86. BacterioFiles 330 - Polar Plasmid Produces Particles
http://traffic.libsyn.com/bact... download (audio/mpeg, 17.77Mb)

Description:

This episode: A plasmid discovered in Antarctic archaea can create virus-like particles, membrane vesicles, and transfer itself to new hosts!

Thanks to Rick Cavicchioli for his contribution.

Download Episode (17.7 MB, 19.4 minutes)

Show notes:
Microbe of the episode: Hypomicrogaster canadensis bracovirus

News item

Journal Paper:
Erdmann S, Tschitschko B, Zhong L, Raftery MJ, Cavicchioli R. 2017. A plasmid from an Antarctic haloarchaeon uses specialized membrane vesicles to disseminate and infect plasmid-free cells. Nat Microbiol 2:1446.

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87. BacterioFiles 329 - Special Secreting Structure Studied
http://traffic.libsyn.com/bact... download (audio/mpeg, 7.78Mb)

Description:

This episode: New type of secretion system discovered that bacteria use to stab amoeba predators to escape their digestion!

Download Episode (7.8 MB, 8.5 minutes)

Show notes:
Microbe of the episode: Avastrovirus 1

News item

Journal Paper:
Böck D, Medeiros JM, Tsao H-F, Penz T, Weiss GL, Aistleitner K, Horn M, Pilhofer M. 2017. In situ architecture, function, and evolution of a contractile injection system. Science 357:713–717.

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88. BacterioFiles 328 - Focused Phages Fight Films
http://traffic.libsyn.com/bact... download (audio/mpeg, 9.57Mb)

Description:

This episode: Phages bound to magnetic nanoparticles can be guided and pulled toward their target, penetrating biofilms to kill harmful microbes!

Download Episode (9.6 MB, 10.4 minutes)

Show notes:
Microbe of the episode: Veillonella alcalescens

News item

Journal Paper:
Li L-L, Yu P, Wang X, Yu S-S, Mathieu J, Yu H-Q, Alvarez PJJ. 2017. Enhanced biofilm penetration for microbial control by polyvalent phages conjugated with magnetic colloidal nanoparticle clusters (CNCs). Environ Sci Nano 4:1817–1826.

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89. BacterioFiles 327 - Microbe Metabolite Meliorates Malaise
http://traffic.libsyn.com/bact... download (audio/mpeg, 8.99Mb)

Description:

This episode: Gut microbes in mice break down plant foods and produce molecules that stimulate the immune system to resist influenza!

Thanks to Drs. Ashley Steed and Thaddeus Stappenbeck for their contributions!

Download Episode (9 MB, 9.8 minutes)

Show notes:
Microbe of the episode: Bougainvillea chlorotic vein banding virus

News item

Journal Paper:
Steed AL, Christophi GP, Kaiko GE, Sun L, Goodwin VM, Jain U, Esaulova E, Artyomov MN, Morales DJ, Holtzman MJ, Boon ACM, Lenschow DJ, Stappenbeck TS. 2017. The microbial metabolite desaminotyrosine protects from influenza through type I interferon. Science 357:498–502.

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90. BacterioFiles 326 - Ciliate Symbionts Selected Separately
http://traffic.libsyn.com/bact... download (audio/mpeg, 9.76Mb)

Description:

This episode: Learning about endosymbionts by comparing bacteria living inside eukaryotes to their free-living cousins!

Thanks to Dr. Vittorio Boscaro for his contribution!

Download Episode (9.7 MB, 10.6 minutes)

Show notes:
Microbe of the episode: Ancalochloris perfilievii

Journal Paper:
Boscaro V, Kolisko M, Felletti M, Vannini C, Lynn DH, Keeling PJ. 2017. Parallel genome reduction in symbionts descended from closely related free-living bacteria. Nat Ecol Evol 1:1160.

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91. BacterioFiles 325 - Moisture Mobilizes Mycelium Multiples
http://traffic.libsyn.com/bact... download (audio/mpeg, 6.74Mb)

Description:

This episode: Figuring out how mushrooms launch their spores out using a trick of water surface tension!

Download Episode (6.7 MB, 7.3 minutes)

Show notes:
Microbe of the episode: Carrot torradovirus 1

News item

Video of artificial "spore" launching

Journal Paper:
Liu F, Chavez RL, Patek SN, Pringle A, Feng JJ, Chen C-H. 2017. Asymmetric drop coalescence launches fungal ballistospores with directionality. J R Soc Interface 14:20170083.

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92. BacterioFiles 324 - Prokaryote Prefers Poorer Power
http://traffic.libsyn.com/bact... download (audio/mpeg, 8.12Mb)

Description:

This episode: Hot spring archaea prefer to use elements that give them less energy even when more energetic options are available!

Download Episode (8.1 MB, 8.8 minutes)

Show notes:
Microbe of the episode: Vitreoscilla beggiatoides

News item

Journal Paper:
Amenabar MJ, Shock EL, Roden EE, Peters JW, Boyd ES. 2017. Microbial substrate preference dictated by energy demand rather than supply. Nat Geosci 10:577–581.

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93. BacterioFiles 323 - Clostridium Capturing Carbon with Walter Sandoval
http://traffic.libsyn.com/bact... download (audio/mpeg, 37.02Mb)

Description:

This episode: I talk with Dr. Walter Sandoval-Espinola, a researcher from Paraguay, now a postdoc at Harvard, about his discovery that biofuel-producing bacteria Clostridium beijerinckii can also transform CO2 and carbon monoxide into biofuels!

Download Episode (37 MB, 40.4 minutes)

Show notes:
News item en español

Find Walter on Twitter or LinkedIn

Journal Paper:
Sandoval-Espinola WJ, Chinn MS, Thon MR, Bruno-Bárcena JM. 2017. Evidence of mixotrophic carbon-capture by n-butanol-producer Clostridium beijerinckii. Sci Rep 7:12759.

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94. BacterioFiles 322 - Parents' Partners Protect Plants
http://traffic.libsyn.com/bact... download (audio/mpeg, 10.34Mb)

Description:

Happy New Year! This episode: Fungal endophytes transferred from healthy adult plant leaf litter help baby cacao plants resist disease!

Thanks to Dr. Natalie Christian for her contribution!

Download Episode (10.3 MB, 11.25 minutes)

Show notes:
Microbe of the episode: Lactobacillus virus Lb338-1

News item
Hear a CBC interview with Dr. Christian about this research

Journal Paper:
Christian N, Herre EA, Mejia LC, Clay K. 2017. Exposure to the leaf litter microbiome of healthy adults protects seedlings from pathogen damage. Proc R Soc B 284:20170641.

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95. BacterioFiles 321 - Escherichia Extends elegans Existence
http://traffic.libsyn.com/bact... download (audio/mpeg, 9.88Mb)

Description:

This episode: Bacteria with various gene knockouts help roundworms live longer and with less disease!

Download Episode (9.9 MB, 10.75 minutes)

Show notes:
News item

Journal Paper:
Han B, Sivaramakrishnan P, Lin C-CJ, Neve IAA, He J, Tay LWR, Sowa JN, Sizovs A, Du G, Wang J, Herman C, Wang MC. 2017. Microbial Genetic Composition Tunes Host Longevity. Cell 169:1249–1262.e13.

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96. BacterioFiles 320 - Fortified Fungi Fight Fevers
http://traffic.libsyn.com/bact... download (audio/mpeg, 7.78Mb)

Description:

This episode: Fungi modified to produce spider and scorpion toxins kill malaria-transmitting mosquitoes extra fast!

Thanks to Brian Lovett for his contribution.

Download Episode (7.8 MB, 8.5 minutes)

Show notes:
Microbe of the episode: Microbispora parva

News item

Journal Paper:
Bilgo E, Lovett B, Fang W, Bende N, King GF, Diabate A, Leger RJS. 2017. Improved efficacy of an arthropod toxin expressing fungus against insecticide-resistant malaria-vector mosquitoes. Sci Rep 7:3433.

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97. BacterioFiles 319 - Mycelial Moisture Magnanimity
http://traffic.libsyn.com/bact... download (audio/mpeg, 10.45Mb)

Description:

This episode: Filament network-forming organisms like fungi can transfer nutrients and moisture to bacteria in harsher conditions!

Download Episode (10.4 MB, 11.4 minutes)

Show notes:
Microbe of the episode: Desulfuromonas acetoxidans

News item

Journal Paper:
Worrich A, Stryhanyuk H, Musat N, König S, Banitz T, Centler F, Frank K, Thullner M, Harms H, Richnow H-H, Miltner A, Kästner M, Wick LY. 2017. Mycelium-mediated transfer of water and nutrients stimulates bacterial activity in dry and oligotrophic environments. Nat Commun 8:ncomms15472.

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98. BacterioFiles 318 - Killers Controlling Coral Contamination
http://traffic.libsyn.com/bact... download (audio/mpeg, 12.82Mb)

Description:

This episode: Bacteria that prey on other bacteria could help keep corals healthy! Thanks to Rory Welsh for his contribution.

Download Episode (12.8 MB, 14 minutes)

Show notes:
Microbe of the episode: Latino mammarenavirus

Journal Paper:
Welsh RM, Rosales SM, Zaneveld JR, Payet JP, McMinds R, Hubbs SL, Thurber RLV. 2017. Alien vs. predator: bacterial challenge alters coral microbiomes unless controlled by Halobacteriovorax predators. PeerJ 5:e3315.

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99. BacterioFiles 317 - Mosquito Microbe Movement
http://traffic.libsyn.com/bact... download (audio/mpeg, 11.35Mb)

Description:

This episode: Studying how Wolbachia bacteria spread through a mosquito population helps efforts to use them to prevent the spread of Dengue! Thanks to Tom Schmidt for his contribution.

Download Episode (11.3 MB, 12.4 minutes)

Show notes:
Microbe of the episode: Heterosigma akashiwo virus 01

News item

Journal Paper:
Schmidt TL, Barton NH, Rašić G, Turley AP, Montgomery BL, Iturbe-Ormaetxe I, Cook PE, Ryan PA, Ritchie SA, Hoffmann AA, O’Neill SL, Turelli M. 2017. Local introduction and heterogeneous spatial spread of dengue-suppressing Wolbachia through an urban population of Aedes aegypti. PLOS Biol 15:e2001894.

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100. BacterioFiles 316 - Studying Sizeable Special Synthetases
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Description:

This episode: Scientists study how fungi make interesting peptides using large proteins instead of ribosomes.

Download Episode (8.7 MB, 9.5 minutes)

Show notes:
Microbe of the episode: Nerine virus X

News item

Journal Paper:
Yu D, Xu F, Zhang S, Zhan J. 2017. Decoding and reprogramming fungal iterative nonribosomal peptide synthetases. Nat Commun 8:ncomms15349.

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101. BacterioFiles 315 - Probiotics Prevent Protein Plaques
http://traffic.libsyn.com/bact... download (audio/mpeg, 11.88Mb)

Description:

This episode: In mice genetically modified to have Alzheimer's-like disease, giving probiotics reduced their degeneration!

Download Episode (11.8 MB, 13 minutes)

Show notes:
Microbe of the episode: SARS coronavirus

Journal Paper:
Bonfili L, Cecarini V, Berardi S, Scarpona S, Suchodolski JS, Nasulti C, Fiorini D, Boarelli MC, Rossi G, Eleuteri AM. 2017. Microbiota modulation counteracts Alzheimer's disease progression influencing neuronal proteolysis and gut hormone plasma levels. Sci Rep 7:2426.

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102. BacterioFiles 314 - Drosophila Dwellers Delay Deficiency
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Description:

This episode: Bacteria affect fruit fly behavior by reducing their need and craving for protein-rich food!

Thanks to Dr. Carlos Ribeiro for his contribution!

Download Episode (14.7 MB, 16.1 minutes)

Show notes:
News item

Ribeiro lab website - two fully-funded postdoc opportunities available

Journal Paper:
Leitão-Gonçalves R, Carvalho-Santos Z, Francisco AP, Fioreze GT, Anjos M, Baltazar C, Elias AP, Itskov PM, Piper MDW, Ribeiro C. 2017. Commensal bacteria and essential amino acids control food choice behavior and reproduction. PLOS Biol 15:e2000862.

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103. BacterioFiles 313 - Colonies Correct Chloride Corrosion
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Description:

This episode: Bacteria could help treat corrosion to preserve ancient iron artifacts!

Thanks to Drs. Pilar Junier and Edith Joseph for their contributions!

Download Episode (13.4 MB, 14.7 minutes)

Show notes:
Journal Paper:
Comensoli L, Maillard J, Albini M, Sandoz F, Junier P, Joseph E. 2017. Use of Bacteria To Stabilize Archaeological Iron. Appl Environ Microbiol 83:e03478-16.

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104. BacterioFiles 312 - Antibiotic Acts As Agreement
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Description:

This episode: Bacteria that produce antibiotic molecule can also use it for communication between cells!

Download Episode (10 MB, 11 minutes)

Show notes:
Microbe of the episode: Rosellinia necatrix victorivirus 1

Journal Paper:
Beyersmann PG, Tomasch J, Son K, Stocker R, Göker M, Wagner-Döbler I, Simon M, Brinkhoff T. 2017. Dual function of tropodithietic acid as antibiotic and signaling molecule in global gene regulation of the probiotic bacterium Phaeobacter inhibens. Sci Rep 7:730.

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105. BacterioFiles 311 - Synchronized Slimes Spread Slowly
http://traffic.libsyn.com/bact... download (audio/mpeg, 14.24Mb)

Description:

This episode: Separate groups of bacteria can each thrive better when they take turns growing instead of competing!

Thanks to Jintao Liu and Rosa Martinez-Corral for their contributions to this episode!

Download Episode (14.2 MB, 15.5 minutes)

Show notes:
Microbe of the episode: Palyam virus

News item

Journal Paper:
Liu J, Martinez-Corral R, Prindle A, Lee DD, Larkin J, Gabalda-Sagarra M, Garcia-Ojalvo J, Süel GM. 2017. Coupling between distant biofilms and emergence of nutrient time-sharing. Science 356:638–642.

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106. BacterioFiles 310 - Prodigious Particles Produce Proteins
http://traffic.libsyn.com/bact... download (audio/mpeg, 11.28Mb)

Description:

This episode: Newly discovered giant viruses almost build their own replication machinery instead of using their host's!

Download Episode (11.2 MB, 12.3 minutes)

Show notes:
Microbe of the episode: Terasakiella pusilla

News item

Journal Paper:
Schulz F, Yutin N, Ivanova NN, Ortega DR, Lee TK, Vierheilig J, Daims H, Horn M, Wagner M, Jensen GJ, Kyrpides NC, Koonin EV, Woyke T. 2017. Giant viruses with an expanded complement of translation system components. Science 356:82–85.

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107. BacterioFiles 309 - Fungus Foils Phytophagy
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Description:

This episode: Fungi living in plants could protect them from ants that cut up their leaves to feed their own fungal gardens!

Download Episode (7.5 MB, 8.2 minutes)

Show notes:
Microbe of the episode: Escherichia virus RB3

Journal Paper:
Rocha SL, Evans HC, Jorge VL, Cardoso LAO, Pereira FST, Rocha FB, Barreto RW, Hart AG, Elliot SL. 2017. Recognition of endophytic Trichoderma species by leaf-cutting ants and their potential in a Trojan-horse management strategy. R Soc Open Sci 4:160628.

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108. BacterioFiles 308 - Predators' Projectile Prototypes
http://traffic.libsyn.com/bact... download (audio/mpeg, 8.24Mb)

Description:

This episode: Eukaryotic ocean microbes have surprisingly diverse and complex ballistic weapons!

Download Episode (8.2 MB, 9 minutes)

Show notes:
Microbe of the episode: Mycoplasma arginini

Cool videos of microbial weapons firing

Journal Paper:
Gavelis GS, Wakeman KC, Tillmann U, Ripken C, Mitarai S, Herranz M, Özbek S, Holstein T, Keeling PJ, Leander BS. 2017. Microbial arms race: Ballistic “nematocysts” in dinoflagellates represent a new extreme in organelle complexity. Sci Adv 3:e1602552.

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109. BacterioFiles 307 - Simplified Stable Soil Symbiosis
http://traffic.libsyn.com/bact... download (audio/mpeg, 12.58Mb)

Description:

This episode: A stable community of only 7 bacteria around corn roots take on similar functions to the much more diverse soil community!

Download Episode (12.5 MB, 13.75 minutes)

Show notes:
Microbe of the episode: Corynebacterium insidiosum

Journal Paper:
Niu B, Paulson JN, Zheng X, Kolter R. 2017. Simplified and representative bacterial community of maize roots. Proc Natl Acad Sci 114:E2450–E2459.

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110. BacterioFiles 306 - Microbes Moderate Metabolic Maladjustment
http://traffic.libsyn.com/bact... download (audio/mpeg, 8.46Mb)

Description:

This episode: Microbes from obese mice seemed helpful in protecting other mice somewhat from an unhealthy lifestyle.

Download Episode (8.5 MB, 9.25 minutes)

Show notes:
Microbe of the episode: Streptomyces thermoviolaceus

News item

Journal Paper:
Nicolas S, Blasco‐Baque V, Fournel A, Gilleron J, Klopp P, Waget A, Ceppo F, Marlin A, Padmanabhan R, Iacovoni JS, Tercé F, Cani PD, Tanti J-F, Burcelin R, Knauf C, Cormont M, Serino M. 2017. Transfer of dysbiotic gut microbiota has beneficial effects on host liver metabolism. Mol Syst Biol 13:921.

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111. BacterioFiles 305 - Defensive Disordered Desiccation
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Description:

This episode: Tardigrades have an interesting way of surviving complete drying out: by producing proteins lacking a stable structure!

Download Episode (11.8 MB, 13 minutes)

Show notes:
Microbe of the episode: Chandipura vesiculovirus

News item

Journal Paper:
Boothby TC, Tapia H, Brozena AH, Piszkiewicz S, Smith AE, Giovannini I, Rebecchi L, Pielak GJ, Koshland D, Goldstein B. 2017. Tardigrades Use Intrinsically Disordered Proteins to Survive Desiccation. Mol Cell 65:975–984.e5.

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112. BacterioFiles 304 - Phages Facilitate Photosynthesis
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Description:

This episode: Viruses infecting cyanobacteria can produce proteins that actually help their host capture light better!

Download Episode (6.6 MB, 7.25 minutes)

Show notes:
Microbe of the episode: Pseudomonas asplenii

News item

Journal Paper:
Gasper R, Schwach J, Hartmann J, Holtkamp A, Wiethaus J, Riedel N, Hofmann E, Frankenberg-Dinkel N. 2017. Distinct Features of Cyanophage-encoded T-type Phycobiliprotein Lyase ΦCpeT: The Role of Auxiliary Metabolic Genes. J Biol Chem 292:3089–3098.

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113. BacterioFiles 303 - Sticky Skin Sows Cells
http://traffic.libsyn.com/bact... download (audio/mpeg, 11.14Mb)

Description:

This episode: Roundworms in soil can carry with them bacteria they eat to grow new food, like farmers!

Download Episode (11.1 MB, 12.15 minutes)

Show notes:
Microbe of the episode: Equid alphaherpesvirus 1

News item

Journal Paper:
Thutupalli S, Uppaluri S, Constable GWA, Levin SA, Stone HA, Tarnita CE, Brangwynne CP. 2017. Farming and public goods production in Caenorhabditis elegans populations. Proc Natl Acad Sci 114:2289–2294.

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114. BacterioFiles 302 - Message Moderates Microbe Mortality
http://traffic.libsyn.com/bact... download (audio/mpeg, 12.73Mb)

Description:

This episode: Even organisms as simple as viruses can communicate with each other!

Download Episode (12.7 MB, 13.9 minutes)

Show notes:
Microbe of the episode: Sweet potato virus C

Commentary (paywall)
Great talk about bacterial communication by Dr. Bonnie Bassler

Journal Paper:
Erez Z, Steinberger-Levy I, Shamir M, Doron S, Stokar-Avihail A, Peleg Y, Melamed S, Leavitt A, Savidor A, Albeck S, Amitai G, Sorek R. 2017. Communication between viruses guides lysis–lysogeny decisions. Nature 541:488–493.

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115. BacterioFiles 301 - Cells Simulate City Structures
http://traffic.libsyn.com/bact... download (audio/mpeg, 10.70Mb)

Description:

This episode: Ancient microbes built underwater structures that look like sunken, ancient cities!

Download Episode (10.6 MB, 11.7 minutes)

Show notes:
Microbe of the episode: Actinomadura luteofluorescens

News item 1/News item 2

Journal Paper:
Andrews JE, Stamatakis MG, Marca-Bell A, Stewart C, Millar IL. 2016. Exhumed hydrocarbon-seep authigenic carbonates from Zakynthos Island (Greece): Concretions not archaeological remains. Marine and Petroleum Geology 76:16–25.

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116. BacterioFiles 300 - Hyphae Help Horizontal (Gene Transfer)
http://traffic.libsyn.com/bact... download (audio/mpeg, 13.23Mb)

Description:

This episode: Filament-forming organisms help bacteria swim through soil and exchange genes with each other! Also, new feature: microbe of the episode!

Download Episode (13.2 MB, 14.4 minutes)

Show notes:
Microbe of the episode: Azotobacter vinelandii

News item

Video of bacteria swimming along mycelium


Full statement from Tom Berthold

Journal Paper:
Berthold T, Centler F, Hübschmann T, Remer R, Thullner M, Harms H, Wick LY. 2016. Mycelia as a focal point for horizontal gene transfer among soil bacteria. Sci Rep 6:36390.

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117. BacterioFiles 299 - Predator Pops Polymer Producers
http://traffic.libsyn.com/bact... download (audio/mpeg, 6.31Mb)

Description:

This episode: Using predatory bacteria to extract valuable bioplastics from other bacteria!

Download Episode (6.3 MB, 6.9 minutes)

Show notes:
News item

Journal Paper:
Martínez V, Herencias C, Jurkevitch E, Prieto MA. 2016. Engineering a predatory bacterium as a proficient killer agent for intracellular bio-products recovery: The case of the polyhydroxyalkanoates. Sci Rep 6:24381.

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118. BacterioFiles 298 - Bacteria Boost Bone Buildup
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Description:

This episode: Gut microbes can even affect formation/remodeling of bones!

Download Episode (8.5 MB, 9.3 minutes)

Show notes:
Journal Paper:
Yan J, Herzog JW, Tsang K, Brennan CA, Bower MA, Garrett WS, Sartor BR, Aliprantis AO, Charles JF. 2016. Gut microbiota induce IGF-1 and promote bone formation and growth. Proc Natl Acad Sci 113:E7554–E7563.

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119. BacterioFiles 297 - Defenders Develop Disease Decrease
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Description:

This episode: Beneficial microbes defend roundworms against a pathogen and pressure it to evolve to cause less disease!

Download Episode (7.7 MB, 8.4 minutes)

Show notes:
News item

Journal Paper:
Ford SA, Kao D, Williams D, King KC. 2016. Microbe-mediated host defence drives the evolution of reduced pathogen virulence. Nat Commun 7:13430.

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120. BacterioFiles 296 - Predator Permits Pathogen Penetration
http://traffic.libsyn.com/bact... download (audio/mpeg, 9.08Mb)

Description:

This episode: Tiny crustaceans eat paramecia, allowing viruses to infect algae inside them!

Download Episode (9.1 MB, 9.9 minutes)

Show notes:
Follow-up to episode 259: mass-producing worm spit healing protein

News item

Journal Paper:
DeLong JP, Al-Ameeli Z, Duncan G, Etten JLV, Dunigan DD. 2016. Predators catalyze an increase in chloroviruses by foraging on the symbiotic hosts of zoochlorellae. Proc Natl Acad Sci 113:13780–13784.

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121. BacterioFiles 295 - Fly Ferries Fungus Feebleness
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Description:

This episode: Fungus-eating flies transfer viruses that help make fungi less harmful to plants!

Download Episode (7.8 MB, 8.5 minutes)

Show notes:
Another example of viruses doing weird things in this fungus

Journal Paper:
Liu S, Xie J, Cheng J, Li B, Chen T, Fu Y, Li G, Wang M, Jin H, Wan H, Jiang D. 2016. Fungal DNA virus infects a mycophagous insect and utilizes it as a transmission vector. Proc Natl Acad Sci 113:12803–12808.

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122. BacterioFiles 294 - Bacteria Benefit Bad Burns
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Description:

This episode: Probiotic bacteria prevent deadly infections in mice with serious burns!

Download Episode (6.3 MB, 6.92 minutes)

Show notes:
Journal Paper:
Argenta A, Satish L, Gallo P, Liu F, Kathju S. 2016. Local Application of Probiotic Bacteria Prophylaxes against Sepsis and Death Resulting from Burn Wound Infection. PLOS ONE 11:e0165294.

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123. BacterioFiles 293 - Millet Microbe Makes Meshes
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Description:

This episode: Bacteria in finger millet roots create special killing traps for damaging fungi!

Download Episode (7.5 MB, 8.25 minutes)

Show notes:
News item

Journal Paper:
Mousa WK, Shearer C, Limay-Rios V, Ettinger CL, Eisen JA, Raizada MN. 2016. Root-hair endophyte stacking in finger millet creates a physicochemical barrier to trap the fungal pathogen Fusarium graminearum. Nat Microbiol 1:16167.

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124. BacterioFiles 292 - Testing Tardigrade Tolerance Tricks
http://traffic.libsyn.com/bact... download (audio/mpeg, 7.34Mb)

Description:

This episode: Tiny super-resistant animals, tardigrades, make proteins that can directly shield DNA from radiation!

Download Episode (7.3 MB, 8 minutes)

Show notes:
News item 1/News item 2

Journal Paper:
Hashimoto T, Horikawa DD, Saito Y, Kuwahara H, Kozuka-Hata H, Shin-I T, Minakuchi Y, Ohishi K, Motoyama A, Aizu T, Enomoto A, Kondo K, Tanaka S, Hara Y, Koshikawa S, Sagara H, Miura T, Yokobori S, Miyagawa K, Suzuki Y, Kubo T, Oyama M, Kohara Y, Fujiyama A, Arakawa K, Katayama T, Toyoda A, Kunieda T. 2016. Extremotolerant tardigrade genome and improved radiotolerance of human cultured cells by tardigrade-unique protein. Nat Commun 7:12808.

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125. BacterioFiles 291 - Pseudomonas Cyanide Supplies Seed Sustenance
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Description:

This episode: Cyanide-producing bacteria help plants grow, not by harming pathogens but by freeing up nutrients!

Download Episode (8.5 MB, 9.25 minutes)

Show notes:
Journal Paper:
Rijavec T, Lapanje A. 2016. Hydrogen Cyanide in the Rhizosphere: Not Suppressing Plant Pathogens, but Rather Regulating Availability of Phosphate. Front Microbiol 7

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126. BacterioFiles 290 - Lichens' Little Lodgers
http://traffic.libsyn.com/bact... download (audio/mpeg, 8.16Mb)

Description:

I'm back! This episode: Lichens, long known to be a partnership between fungi and algae, now discovered to have an important third member!

Download Episode (8.1 MB, 8.9 minutes)

Show notes:
News item

Journal Paper:
Spribille T, Tuovinen V, Resl P, Vanderpool D, Wolinski H, Aime MC, Schneider K, Stabentheiner E, Toome-Heller M, Thor G, Mayrhofer H, Johannesson H, McCutcheon JP. 2016. Basidiomycete yeasts in the cortex of ascomycete macrolichens. Science 353:488–492.

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127. BacterioFiles Special - Novozymes' Nathan Cude
http://traffic.libsyn.com/bact... download (audio/mpeg, 14.12Mb)

Description:

This episode: An interview with Dr. Nathan Cude, team leader at Novozymes BioAg Alliance, working on finding and bringing to market soil microbes that can help crops grow!

Download Episode (14.1 MB, 15.4 minutes)

Show notes:
Novozymes
BioAg Alliance
Nathan Cude on Twitter and LinkedIn

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128. BacterioFiles 289 - Prehistoric Paired Prokaryote Partners
http://traffic.libsyn.com/bact... download (audio/mpeg, 9.13Mb)

Description:

This episode: Great apes' specific gut microbe communities have been with us for millions of years!

Download Episode (9.1 MB, 10 minutes)

Show notes:
News item 1/News item 2

Journal Paper:
Moeller AH, Caro-Quintero A, Mjungu D, Georgiev AV, Lonsdorf EV, Muller MN, Pusey AE, Peeters M, Hahn BH, Ochman H. 2016. Cospeciation of gut microbiota with hominids. Science 353:380–382.

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129. BacterioFiles 288 - Caulobacter's Copper Coping Capabilities
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Description:

This episode: Some bacterial species use multiple strategies within a single population to deal with environmental challenges!

Download Episode (8.9 MB, 9.7 minutes)

Show notes:
Journal Paper:
Lawarée E, Gillet S, Louis G, Tilquin F, Blastier SL, Cambier P, Matroule J-Y. 2016. Caulobacter crescentus intrinsic dimorphism provides a prompt bimodal response to copper stress. Nat Microbiol 1:16098.

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130. BacterioFiles 287 - Producing Potent Pathogen Prophylaxes
http://traffic.libsyn.com/bact... download (audio/mpeg, 9.22Mb)

Description:

This episode: Polymer-coated bacteria make really good vaccines!

Download Episode (9.2 MB, 10 minutes)

Show notes:
News item

Journal Paper:
Li Y, Beitelshees M, Fang L, Hill A, Ahmadi MK, Chen M, Davidson BA, Knight P, Smith RJ, Andreadis ST, Hakansson AP, Jones CH, Pfeifer BA. 2016. In situ pneumococcal vaccine production and delivery through a hybrid biological-biomaterial vector. Sci Adv 2:e1600264.

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131. BacterioFiles 286 - Prokaryote Prevents Pregnancy Pathogen
http://traffic.libsyn.com/bact... download (audio/mpeg, 8.12Mb)

Description:

This episode: Bacteria in mosquito cells can block transmission of Zika virus!

Download Episode (8.1 MB, 8.9 minutes)

Show notes:
News item

Journal Paper:
Aliota MT, Peinado SA, Velez ID, Osorio JE. 2016. The wMel strain of Wolbachia Reduces Transmission of Zika virus by Aedes aegypti. Sci Rep 6:28792.

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132. BacterioFiles 285 - Sultry Snow Cell Sun Screen
http://traffic.libsyn.com/bact... download (audio/mpeg, 6.82Mb)

Description:

This episode: Algae growing in Arctic snow make red pigments that heat up their surroundings!

Download Episode (6.8 MB, 7.5 minutes)

Show notes:
News item

Journal Paper:
Lutz S, Anesio AM, Raiswell R, Edwards A, Newton RJ, Gill F, Benning LG. 2016. The biogeography of red snow microbiomes and their role in melting arctic glaciers. Nat Commun 7:11968.

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133. BacterioFiles 284 - Remedies Reduce Recipient Rejection
http://traffic.libsyn.com/bact... download (audio/mpeg, 9.60Mb)

Description:

This episode: Modifying mice's microbial communities increased mouse survival before a transplantation was rejected by their immune system!

Download Episode (9.6 MB, 10.5 minutes)

Show notes:
News item

Journal Paper:
Lei YM, Chen L, Wang Y, Stefka AT, Molinero LL, Theriault B, Aquino-Michaels K, Sivan AS, Nagler CR, Gajewski TF, Chong AS, Bartman C, Alegre M-L. 2016. The composition of the microbiota modulates allograft rejection. J Clin Invest 126:2736–2744.

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134. BacterioFiles 283 - Phages Furnish Photosynthetic Fortifications
http://traffic.libsyn.com/bact... download (audio/mpeg, 6.79Mb)

Description:

This episode: Viruses infecting photosynthetic bacteria could transfer immunity to other viruses between their hosts!

Download Episode (6.8 MB, 7.4 minutes)

Show notes:
News item

Journal Paper:
Chénard C, Wirth JF, Suttle CA. 2016. Viruses Infecting a Freshwater Filamentous Cyanobacterium (Nostoc sp.) Encode a Functional CRISPR Array and a Proteobacterial DNA Polymerase B. mBio 7:e00667-16.

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135. BacterioFiles 282 - Mycobacteria Make Mice Mellow
http://traffic.libsyn.com/bact... download (audio/mpeg, 9.80Mb)

Description:

This episode: Vaccinating mice with heat-killed soil bacteria reduced their stressed behavior and inflammation!

Download Episode (9.8 MB, 10.7 minutes)

Show notes:
Journal Paper:
Reber SO, Siebler PH, Donner NC, Morton JT, Smith DG, Kopelman JM, Lowe KR, Wheeler KJ, Fox JH, Hassell JE, Greenwood BN, Jansch C, Lechner A, Schmidt D, Uschold-Schmidt N, Füchsl AM, Langgartner D, Walker FR, Hale MW, Perez GL, Treuren WV, González A, Halweg-Edwards AL, Fleshner M, Raison CL, Rook GA, Peddada SD, Knight R, Lowry CA. 2016. Immunization with a heat-killed preparation of the environmental bacterium Mycobacterium vaccae promotes stress resilience in mice. Proc Natl Acad Sci 113:E3130–E3139.

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136. BacterioFiles 281 - Prokaryote Partners Produce Plastic
http://traffic.libsyn.com/bact... download (audio/mpeg, 12.09Mb)

Description:

This episode: Microbes with complementary abilities help each other grow and produce useful stuff from the air!

Download Episode (12 MB, 13.2 minutes)

Show notes:
Journal Paper:
Smith MJ, Francis MB. 2016. A designed A. vinelandii-S. elongatus coculture for chemical photoproduction from air, water, phosphate and trace metals. ACS Synth Biol 5:955–961.

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137. BacterioFiles 280 - Saccharomyces Smash Small Spaces
http://traffic.libsyn.com/bact... download (audio/mpeg, 5.46Mb)

Description:

This episode: Microbes in tight spaces grow so much they can build up pressure and burst out!

Download Episode (5.5 MB, 6 minutes)

Show notes:
News item

Video: cells expanding walls of chamber
Video: cells squished together
Video: cells bursting out of chamber

Journal Paper:
Delarue M, Hartung J, Schreck C, Gniewek P, Hu L, Herminghaus S, Hallatschek O. 2016. Self-driven jamming in growing microbial populations. Nat Phys 12:762–766.

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138. BacterioFiles 279 - Hijacker Heightened Hyphal Heterogeneity
http://traffic.libsyn.com/bact... download (audio/mpeg, 8.90Mb)

Description:

This episode: Fungi control their cell's growth and division with a protein from a virus, unlike all other kinds of eukaryote!

Download Episode (8.9 MB, 9.75 minutes)

Show notes:
News item

Journal Paper:
Medina EM, Turner JJ, Gordân R, Skotheim JM, Buchler NE. 2016. Punctuated evolution and transitional hybrid network in an ancestral cell cycle of fungi. eLife 5:e09492.

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139. BacterioFiles 278 - Fungal Family Friends and Foes
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Description:

This episode: Some fungi change from making plants sick to being helpful to plants! How do plants react to them?

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Show notes:
News item

Journal Paper:
Hacquard S, Kracher B, Hiruma K, Münch PC, Garrido-Oter R, Thon MR, Weimann A, Damm U, Dallery J-F, Hainaut M, Henrissat B, Lespinet O, Sacristán S, Themaat EVL van, Kemen E, McHardy AC, Schulze-Lefert P, O’Connell RJ. 2016. Survival trade-offs in plant roots during colonization by closely related beneficial and pathogenic fungi. Nat Commun 7:11362.

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140. BacterioFiles 277 - Sailor Cells Store Selenium
http://traffic.libsyn.com/bact... download (audio/mpeg, 6.13Mb)

Description:

This episode: Bacteria with their own magnetic compass can also clean up and recover toxic but valuable elements!

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Show notes:
News item

Journal Paper:
Tanaka M, Knowles W, Brown R, Hondow N, Arakaki A, Baldwin S, Staniland S, Matsunaga T. 2016. Biomagnetic Recovery and Bioaccumulation of Selenium Granules in Magnetotactic Bacteria. Appl Environ Microbiol 82:3886–3891.

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141. BacterioFiles 276 - Single-cell Slime School
http://traffic.libsyn.com/bact... download (audio/mpeg, 8.80Mb)

Description:

This episode: Individual slime molds show the ability to learn about their environment!

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Show notes:
News item

Journal Paper:
Boisseau RP, Vogel D, Dussutour A. 2016. Habituation in non-neural organisms: evidence from slime moulds. Proc R Soc B 283:20160446.

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142. BacterioFiles 275 - Building Bacterial Batteries
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Description:

This episode: Scientists build a battery out of microbes and electrodes that can store and release electricity repeatedly!

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Show notes:
News item

Interesting articles about anaerobic digesters
Journal Paper:
Molenaar SD, Mol AR, Sleutels THJA, ter Heijne A, Buisman CJN. 2016. Microbial Rechargeable Battery: Energy Storage and Recovery through Acetate. Environ Sci Technol Lett 3:144–149.

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143. BacterioFiles 274 - Proteobacteria Purify Piscine Pee
http://traffic.libsyn.com/bact... download (audio/mpeg, 7.40Mb)

Description:

This episode: Bacteria in the gills of fish help break down their metabolic wastes before they reach toxic levels!

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Show notes:
News item

Journal Paper:
van Kessel MAHJ, Mesman RJ, Arshad A, Metz JR, Spanings FAT, van Dalen SCM, van Niftrik L, Flik G, Wendelaar Bonga SE, Jetten MSM, Klaren PHM, Op den Camp HJM. 2016. Branchial nitrogen cycle symbionts can remove ammonia in fish gills. Environ Microbiol Rep 8:590–594.

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144. BacterioFiles 273 - Bottle-Biting Bacteria
http://traffic.libsyn.com/bact... download (audio/mpeg, 6.45Mb)

Description:

This episode: Newly discovered bacteria can break down especially long-lived type of plastic!

Download Episode (6.4 MB, 7 minutes)

Show notes:
News item 1/News item 2 (loginwall)

Journal Paper:
Yoshida S, Hiraga K, Takehana T, Taniguchi I, Yamaji H, Maeda Y, Toyohara K, Miyamoto K, Kimura Y, Oda K. 2016. A bacterium that degrades and assimilates poly(ethylene terephthalate). Science 351:1196–1199.

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145. BacterioFiles 272 - Parasite Prevents Pollution Poisoning
http://traffic.libsyn.com/bact... download (audio/mpeg, 7.88Mb)

Description:

This episode: Worm parasites infecting brine shrimp help them survive better in arsenic-polluted environments!

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Show notes:
News item

Journal Paper:
Sánchez MI, Pons I, Martínez-Haro M, Taggart MA, Lenormand T, Green AJ. 2016. When Parasites Are Good for Health: Cestode Parasitism Increases Resistance to Arsenic in Brine Shrimps. PLOS Pathog 12:e1005459.

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146. BacterioFiles 271 - Dictyostelium Delivers DNA Deathtraps
http://traffic.libsyn.com/bact... download (audio/mpeg, 11.22Mb)

Description:

This episode: Slime molds have special cells that capture and kill bacteria using traps made of DNA!

Download Episode (11.2 MB, 12.25 minutes)

Show notes:
Follow-up study from ep 255 group related to this study

Link to Audiommunity episode about Neutrophil Extracellular Traps

Journal Paper:
Zhang X, Zhuchenko O, Kuspa A, Soldati T. 2016. Social amoebae trap and kill bacteria by casting DNA nets. Nat Commun 7:10938.

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147. BacterioFiles 270 - Bacteria Block Bug Babies
http://traffic.libsyn.com/bact... download (audio/mpeg, 13.34Mb)

Description:

This episode: Insect gut microbes can be engineered to act as birth control, population control, or disease control for bugs!

Download Episode (13.3 MB, 14.5 minutes)

Show notes:
News item

This Week in Parasitism episode about Trypanosoma
Unedited statement about this paper from Professor Dyson

Journal Paper:
Whitten MMA, Facey PD, Sol RD, Fernández-Martínez LT, Evans MC, Mitchell JJ, Bodger OG, Dyson PJ. 2016. Symbiont-mediated RNA interference in insects. Proc R Soc B 283:20160042.

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148. BacterioFiles 269 - Magnetic Microbes Maim MRSA
http://traffic.libsyn.com/bact... download (audio/mpeg, 10.66Mb)

Description:

This episode: Killing pathogens by attaching magnetotactic bacteria to them and then raising the heat with magnetic fields!

Download Episode (10.6 MB, 11.6 minutes)

Show notes:
News item

Journal Paper:
Chen C, Chen L, Yi Y, Chen C, Wu L-F, Song T. 2016. Killing of Staphylococcus aureus via Magnetic Hyperthermia Mediated by Magnetotactic Bacteria. Appl Environ Microbiol 82:2219–2226.

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149. BacterioFiles 268 - Sophisticated Cyanobacterium Sight
http://traffic.libsyn.com/bact... download (audio/mpeg, 9.74Mb)

Description:

This episode: Spherical cyanobacterium Synechocystis acts like a tiny eyeball in sensing light, allowing cells to move closer to light sources!

Download Episode (9.7 MB, 10.6 minutes)

Show notes:
News item

Video 1: Synechocystis cells moving toward light sources
Video 2: Synechocystis cells avoiding point of bright light on surface

Journal Paper:
Schuergers N, Lenn T, Kampmann R, Meissner MV, Esteves T, Temerinac-Ott M, Korvink JG, Lowe AR, Mullineaux CW, Wilde A. 2016. Cyanobacteria use micro-optics to sense light direction. eLife 5:e12620.

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150. BacterioFiles 267 - Crust Color Cooks Communities
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Description:

This episode: Cyanobacteria in biocrusts produce pigments that heat their surroundings up to 10 degrees hotter!

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Show notes:
News item

Journal Paper:
Couradeau E, Karaoz U, Lim HC, Nunes da Rocha U, Northen T, Brodie E, Garcia-Pichel F. 2016. Bacteria increase arid-land soil surface temperature through the production of sunscreens. Nat Commun 7:10373.

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151. BacterioFiles 266 - Solar Cyborg Cells Capture Carbon
http://traffic.libsyn.com/bact... download (audio/mpeg, 9.73Mb)

Description:

This episode: Adding exotic elements to convert spore-forming bacteria into light-capturing cyborgs that convert carbon dioxide into useful chemicals!

Download Episode (9.7 MB, 10.5 minutes)

Show notes:
News item 1/News item 2

Journal Paper:
Sakimoto KK, Wong AB, Yang P. 2016. Self-photosensitization of nonphotosynthetic bacteria for solar-to-chemical production. Science 351:74–77.

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152. BacterioFiles 265 - Predator Protein Protects Predator
http://traffic.libsyn.com/bact... download (audio/mpeg, 7.28Mb)

Description:

This episode: Predatory bacteria have a particular protein that protects them from their own prey-damaging enzymes!

Download Episode (7.3 MB, 7.9 minutes)

Show notes:
News item

Journal Paper:
Lambert C, Cadby IT, Till R, Bui NK, Lerner TR, Hughes WS, Lee DJ, Alderwick LJ, Vollmer W, Sockett RE, Lovering AL. 2015. Ankyrin-mediated self-protection during cell invasion by the bacterial predator Bdellovibrio bacteriovorus. Nat Commun 6:8884.

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153. BacterioFiles 264 - Small Cells Stimulate Satiety
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Description:

This episode: Proteins from gut bacteria seems to affect hunger and satiety in their (rodent) hosts!

Download Episode (7.7 MB, 8.3 minutes)

Show notes:
News item 1/News item 2

Journal Paper:
Breton J, Tennoune N, Lucas N, Francois M, Legrand R, Jacquemot J, Goichon A, Guérin C, Peltier J, Pestel-Caron M, Chan P, Vaudry D, do Rego J-C, Liénard F, Pénicaud L, Fioramonti X, Ebenezer IS, Hökfelt T, Déchelotte P, Fetissov SO. 2016. Gut Commensal E. coli Proteins Activate Host Satiety Pathways following Nutrient-Induced Bacterial Growth. Cell Metab 23:324–334.

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154. BacterioFiles 263 - Germ Jettisoned Jellyfish Genes
http://www.microbeworld.org/po... download (audio/mpeg, 7.66Mb)

Description:

This episode: Microscopic parasites of fish and worms actually came from jellyfish-like animals, after losing most of their genome!

Download Episode (7.7 MB, 8.3 minutes)

Show notes:
News item

Journal Paper:
Chang ES, Neuhof M, Rubinstein ND, Diamant A, Philippe H, Huchon D, Cartwright P. 2015. Genomic insights into the evolutionary origin of Myxozoa within Cnidaria. Proc Natl Acad Sci 112:14912–14917.

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155. BacterioFiles 262 - Pathogen Polyketide Protects and Punishes
http://www.microbeworld.org/po... download (audio/mpeg, 12.43Mb)

Description:

This episode: Clostridium bacteria that infect potatoes can both kill competitors and tolerate oxygen, thanks to the pink compounds they produce!

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Show notes:
Journal Paper:
Shabuer G, Ishida K, Pidot SJ, Roth M, Dahse H-M, Hertweck C. 2015. Plant pathogenic anaerobic bacteria use aromatic polyketides to access aerobic territory. Science 350:670–674.

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156. BacterioFiles 261 - Pilfered Parasitoid Proteins Protect Prey
http://www.microbeworld.org/po... download (audio/mpeg, 13.86Mb)

Description:

This episode: Viruses domesticated by parasitoid wasps have transferred wasp genes to caterpillar victims, allowing them to survive deadly infections from other viruses! This means that Monarch butterflies are effectively naturally Genetically Modified Organisms (GMOs).

Download Episode (13.8 MB, 15 minutes)

Show notes:
News item

Journal Paper:
Gasmi L, Boulain H, Gauthier J, Hua-Van A, Musset K, Jakubowska AK, Aury J-M, Volkoff A-N, Huguet E, Herrero S, Drezen J-M. 2015. Recurrent Domestication by Lepidoptera of Genes from Their Parasites Mediated by Bracoviruses. PLOS Genet 11:e1005470.

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157. BacterioFiles 260 - Endoriftia Evacuate Expired Employers
http://www.microbeworld.org/po... download (audio/mpeg, 9.05Mb)

Description:

This episode: Bacteria in hydrothermal vents that feed their host tubeworms evacuate when their hosts perish!

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Show notes:
Journal Paper:
Klose J, Polz MF, Wagner M, Schimak MP, Gollner S, Bright M. 2015. Endosymbionts escape dead hydrothermal vent tubeworms to enrich the free-living population. Proc Natl Acad Sci 112:11300–11305.

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158. BacterioFiles 259 - Fluke Froth Fosters Fester Fixing
http://www.microbeworld.org/po... download (audio/mpeg, 13.44Mb)

Description:

This episode: I converse with Dr. Michael Smout about a liver fluke parasite could help heal chronic wounds more quickly!

Download Episode (13.4 MB, 14.6 minutes)

Show notes:
News item

Journal Paper:
Smout MJ, Sotillo J, Laha T, Papatpremsiri A, Rinaldi G, Pimenta RN, Chan LY, Johnson MS, Turnbull L, Whitchurch CB, Giacomin PR, Moran CS, Golledge J, Daly N, Sripa B, Mulvenna JP, Brindley PJ, Loukas A. 2015. Carcinogenic Parasite Secretes Growth Factor That Accelerates Wound Healing and Potentially Promotes Neoplasia. PLOS Pathog 11:e1005209.

Michael Smout's research portfolio
Winning presentation about this research on FameLab
The Australian Institute of Tropical Health & Medicine

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159. BacterioFiles 258 - Transformed Toxin Translocates Treatments
http://www.microbeworld.org/po... download (audio/mpeg, 11.11Mb)

Description:

This episode: Bacterial toxins could be modified to deliver life-saving proteins into neurons!

Download Episode (11.1 MB, 12.1 minutes)

Show notes:
Journal Paper:
Chen C, Przedpelski A, Tepp WH, Pellett S, Johnson EA, Barbieri JT. 2015. Heat-Labile Enterotoxin IIa, a Platform To Deliver Heterologous Proteins into Neurons. mBio 6:e00734-15.

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160. BacterioFiles 257 - Phage Fibers Fight Phyllosphere Foes
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Description:

This episode: Bacteria have repeatedly captured and used the tails of phages to fight each other!

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Show notes:
Journal Paper:
Hockett KL, Renner T, Baltrus DA. 2015. Independent Co-Option of a Tailed Bacteriophage into a Killing Complex in Pseudomonas. mBio 6:e00452-15.

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Thumbnail image: Cultures of Pseudomonas syringae van Hall taken from bean halo blight colonies. By: Howard F. Schwartz, The Bugwood Network at the University of Georgia and the USDA Forest Service.

 



161. BacterioFiles 256 - Virus Versus Virus
http://www.microbeworld.org/po... download (audio/mpeg, 8.06Mb)

Description:

This episode: Viruses can cause host cells to inhibit other viruses!

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Show notes:
Journal Paper:
Chiba S, Suzuki N. 2015. Highly activated RNA silencing via strong induction of dicer by one virus can interfere with the replication of an unrelated virus. Proc Natl Acad Sci 112:E4911–E4918.

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162. BacterioFiles 255 - Colonizer Controls Carrier Cultivation
http://www.microbeworld.org/po... download (audio/mpeg, 12.46Mb)

Description:

This episode: Some bacteria seem to cause slime mold amoebas to carry around other bacteria for food!

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Show notes:
News item

Journal Paper:
DiSalvo S, Haselkorn TS, Bashir U, Jimenez D, Brock DA, Queller DC, Strassmann JE. 2015. Burkholderia bacteria infectiously induce the proto-farming symbiosis of Dictyostelium amoebae and food bacteria. Proc Natl Acad Sci 112:E5029–E5037.

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163. BacterioFiles 254 - Clostridium Consolidates Combustibles Conversion
http://www.microbeworld.org/po... download (audio/mpeg, 13.94Mb)

Description:

This episode: Engineering bacteria to convert cellulose directly into useful biofuels and chemicals can be tricky!

Download Episode (13.9 MB, 15.2 minutes)

Show notes:
News item

Journal Paper:
Lin PP, Mi L, Morioka AH, Yoshino KM, Konishi S, Xu SC, Papanek BA, Riley LA, Guss AM, Liao JC. 2015. Consolidated bioprocessing of cellulose to isobutanol using Clostridium thermocellum. Metab Eng 31:44–52.

Other interesting stories:

Cute photosynthetic protist could do interesting metabolic processes Using advanced technique to link antibiotic production to specific beewolf microbes Termite gut protist has bacterial symbiont that fixes carbon and nitrogen (paper) Geography and household members influence fungi and bacteria of home dust Probiotic ineffective at preventing colonization by drug-resistant pathogens

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164. BacterioFiles 253 - Probiotics Promote Protective Pathway
http://www.microbeworld.org/po... download (audio/mpeg, 8.20Mb)

Description:

This episode: In mice and fruit flies, Lactobacillus species induce gut cells to protect themselves from reactive oxygen compounds!

Download Episode (8.2 MB, 8.9 minutes)

Show notes:
News item

Journal Paper:
Jones, R. M. et al. Lactobacilli Modulate Epithelial Cytoprotection through the Nrf2 Pathway. Cell Reports 12, 1217–1225 (2015).

Other interesting stories:

Gut microbes in mice help prevent development of diabetes Bacteria could degrade nicotine to help people quit smoking Even dead probiotic bacteria protect nematodes against pathogens (paper) Discovery of TNT-degrading yeast for bioremediation Engineered yeast can produce opioids

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165. BacterioFiles 252 - Small Cells Supervise Circadian Cycles
http://www.microbeworld.org/po... download (audio/mpeg, 8.62Mb)

Description:

This episode: In mice, high-fat diets affect their gut microbes, which in turn disrupts their circadian cycles and metabolic health!

Download Episode (8.6 MB, 9.35 minutes)

Show notes:
News item/Journal Paper
Other related news item/paper

Other interesting stories:

 

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166. BacterioFiles 251 - Mycophagous Myrmicinae Mutualist Microbes
http://www.microbeworld.org/po... download (audio/mpeg, 10.63Mb)

Description:

This episode: Gut bacteria seem to help ants with very restrictive diets flourish more!

Download Episode (10.6 MB, 11.5 minutes)

Show notes:
Journal Paper

Other interesting stories:

 

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167. BacterioFiles 250 - Bacteria Boost Berry Borer Beetle Babies
http://www.microbeworld.org/po... download (audio/mpeg, 6.88Mb)

Description:

This episode: Gut bacteria make it possible for coffee berry borer beetles to live entirely on caffeine-rich food!

Download Episode (6.9 MB, 7.5 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

 

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168. BacterioFiles 249 - Spores Survive Spaceship Scorching
http://www.microbeworld.org/po... download (audio/mpeg, 10.79Mb)

Description:

This episode: Bacterial spores can survive atmospheric entry on an artificial meteorite!

Download Episode (10.7 MB, 11.25 minutes)

Show notes:
Journal Paper

Other interesting stories:

Fermenting chocolate with domesticated yeasts could make it better than natural fermentation Bacteria could control robot body in fairly complex behaviors (podcast) Plants' hormones affect the microbial communities around their roots Ocean microbes make clouds that reflect extra sunlight Emphasizing the importance of microbes in the soil

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Thumbnail image: A colony of thermophiles in the outflow of Mickey Hot Springs, Oregon, the water temperature is approximately 60 °C (140 °F). By: Wiki user: Amateria1121



169. BacterioFiles 248 - Tiny Travelers Transport Toxin Trashers
http://www.microbeworld.org/po... download (audio/mpeg, 14.21Mb)

Description:

This episode: Bacteria that swarm around in groups carry other bacteria with them that can be helpful for degrading toxins!

Download Episode (14.2 MB, 15.5 minutes)

Show notes:
Journal Paper/Explanatory video

Other interesting stories:

Bacterium can help biofuel-producing algae grow better (paper) Super-tolerant yeasts found in high volcanic place in super-dry desert (paper) Bacteria living in even non-legume plants (like rice) could fix nitrogen for their host Algae are becoming more popular as alternative protein in food Microbiome resistance to C. difficile infection depends on many bacteria together

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170. BacterioFiles 247 - Animalcule Acetate Ameliorates Asthma
http://www.microbeworld.org/po... download (audio/mpeg, 12.15Mb)

Description:

This episode: Feeding mice high-fiber diets reduces their risk of allergic airway disease, even across generations!

Download Episode (12.1 MB, 13.2 minutes)

Show notes:
Journal Paper

Other interesting stories:

Challenging bacteria with other bacteria can help for discovering useful chemicals they produce Bacteria's CRISPR systems can affect their own genome structure (paper) Observing bacterial communities to sense pollution in the environment (paper) Fruit fly bacteria reduce aggression and fighting among males Bacterial nanoparticles can enhance x-rays

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171. BacterioFiles 246 - Prowling Protist Predator Packs
http://www.microbeworld.org/po... download (audio/mpeg, 10.57Mb)

Description:

This episode: Amoebas in soil gang up on and eat much larger roundworms!

Download Episode (10.5 MB, 11.3 minutes)

Show notes:
Journal Paper
Video of amoebas eating worm
Discussion on This Week in Microbiology

Other interesting stories:

Fungi living inside plants produce potential anticancer compound (paper) Local bacteria help protect and nurture crops in Nigeria (paper) Squished bacteria grow as pancake-shaped cells (paper) Bacteria living in fungi that help plants have many genes taken from their hosts (paper) Engineering yeast that produce opiates cheaply

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172. BacterioFiles 245 - Plant Prokaryotes Produce Protective Plaques
http://www.microbeworld.org/po... download (audio/mpeg, 10.17Mb)

Description:

This episode: Bacteria around rice roots help protect plants from arsenic toxicity!

Download Episode (10.1 MB, 11 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Effect on gut microbes is important for benefits from fiber in diet (paper) Which aspects of nose bacterial community affect Staphylococcus colonization? (paper) Bacteria passing electrons to each other might help natural gas production (paper) Gut microbes permit insects to eat new kinds of food There's more than just bacteria and fungi (and plants and animals) in the soil

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173. BacterioFiles 244 - Rabbit Viruses Exploding Cancer
http://www.microbeworld.org/po... download (audio/mpeg, 39.30Mb)

Description:

This episode: A conversation with Audiommunity hosts about a rabbit virus that may help treat cancer while preventing the treatment from killing the patient!

Download Episode (39.2 MB, 42.9 minutes)

Show notes:
News item/Journal Paper
Audiommunity podcast
Unedited version of this episode

Other interesting stories:

Microbes could be useful in cleaning radioactive waste Finding algae in glacial ice on mountains Peru Soil bacteria inhibit carcinogen production by fungi (paper) Birds carry around many kinds of plant bacteria Thinking of leaf-cutter ant fungus gardens as biotech fermentations (paper) Making Azotobacter mutants that can produce fertilizer for other organisms (paper)

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174. BacterioFiles 243 - Fungal Friends Facilitate Phytoextraction (feat. Cat Adams)
http://www.microbeworld.org/po... download (audio/mpeg, 14.68Mb)

Description:

This episode: A conversation with Cat Adams about how fungi help plants clean up toxic zinc nanoparticles in soil!

Download Episode (14.6 MB, 16 minutes)

Show notes:
Journal Paper
About Cat Adams: Blog/Twitter
The Unconscious Bias Project (Twitter)

Other interesting stories:

Microbes could be useful in cleaning radioactive waste Loaded bacteria deliver antibiotic straight to target through immune system (paper) Bacterial interactions help marine algae grow Engineered luminescent probiotics could help detect cancer Bacteria could save bats from deadly fungus

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175. BacterioFiles 242 - Corporeal Communities Create Characterizing Codes
http://www.microbeworld.org/po... download (audio/mpeg, 11.33Mb)

Description:

This episode: Features of the microbial communities of people's bodies could be used to identify individuals!

Download Episode (11.3 MB, 12.3 minutes)

Show notes:
Commentary/Journal Paper

Other interesting stories:

Gut bacteria and gut cancer relate in confusing ways More about how giant Mimivirus infects its host Even seemingly helpful microbes may become harmful in certain contexts (paywall) Microbes in sewage seem to rebuild drugs that treatment plants try to remove Microbes could help keep water clean

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176. BacterioFiles 241 - Colon Colonizers Control Cancer Combat
http://www.microbeworld.org/po... download (audio/mpeg, 10.75Mb)

Description:

I'm back!

This episode: Gut microbes enhance the effectiveness of cancer therapies!

Download Episode (10.7 MB, 11.7 minutes)

Show notes:
News item 1/News item 2/Journal Paper 1/Journal paper 2

Other interesting stories:

Microbiome an important link between diet and colon cancer Viruses can be helpful more often than we realize Fungus breaks down plant matter and makes jet fuel Engineering E. coli for better exploration of other species' genetic potential It's possible our food might be too clean

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177. BacterioFiles 240 - Water Worms Make (carbon) Monoxide Meals
http://www.microbeworld.org/po... download (audio/mpeg, 11.16Mb)

Description:

Reminder: this is the last episode for at least a few weeks while I am wrapping up my PhD. See you again when I'm done!

This episode: Marine worms and their microbial symbionts can live on the toxic gas carbon monoxide!

Download Episode (11.1 MB, 12.1 minutes)

Show notes:
Journal Paper

Other interesting stories:

Salt-loving extremophiles eat carbon monoxide at Mars-level concentrations (paper) Better biotech processes by microbial cooperation (paper) Different ways to engineer microbes to produce propane Not all organisms share exactly the same genetic code Queen bees have different microbes than other bees (paper)

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178. BacterioFiles 239 - Familial Pheromones Fight faecalis
http://www.microbeworld.org/po... download (audio/mpeg, 10.46Mb)

Description:

Just to let you know, I'm trying to finish up my dissertation and graduate in the next few months, so after episode 240, I will be putting the show on hold, at least for a few weeks (but not forever). I'll be sure to bring back some good content after I am done feeling so crunched for time though.

This episode: Gut bacteria kill their drug-resistant pathogenic cousins of the same species via pheromone signaling!

Download Episode 10.4 MB, 11.4 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Bacterial compound could inhibit biofilms but not their builders Microbial engineering could free us from petroleum products Studying the immune regulation roles of mouse gut microbes (paper) Finding useful cold- and warm-adapted algae by season (paper) Powerful swimming microbe creates crystals of cells

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179. BacterioFiles 238 - Forcing Fungal Familiarization
http://www.microbeworld.org/po... download (audio/mpeg, 7.86Mb)

Description:

This episode: Of genes that are similar in yeast and humans, almost half of the yeast versions are functional when replaced with the human version!

Download Episode (7.9 MB, 8.5 minutes)

Show notes:
Journal Paper

Other interesting stories:

Turning algae from harmful blooms into useful products Intercropping enriches microbes that help crop yields (paper) Bacteria store energy in magnetic particles that other bacteria later take Certain gut microbes are characteristic of traditional (non-urban) lifestyles (paper) More study into how microbes make tasty foods

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180. BacterioFiles 237 - Proving Protist Predation Parentage
http://www.microbeworld.org/po... download (audio/mpeg, 9.43Mb)

Description:

This episode: Vampirovibrio chlorellavorus, a predatory bacterium that feeds on Chlorella algae, is currently lost from science, but its genome has been sequenced and interpreted anyway, to reveal a surprising family history!

Download Episode (9.4 MB, 10.25 minutes)

Show notes:
Journal Paper

Other interesting stories:

Appetite-suppressing bacteria could treat obesity Skin bacteria could save frogs from deadly fungus Developing yeast that produce lots of biofuel lipids Vineyard soil microbiome affects vine microbes (and thus, wine) Microbes could make super-sensitive bioelectromechanical sensors

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181. BacterioFiles 236 - Film Formation Favors Fossilization
http://www.microbeworld.org/po... download (audio/mpeg, 8.16Mb)

Description:

This episode: Gut microbes' activity in decaying brine shrimp help promote fossilization of their soft parts!

Download Episode (8.1 MB, 8.8 minutes)

Show notes:
Paywalled news item/Journal Paper

Other interesting stories:

Baboon friends have more closely related gut communities Lichens are awesome Plants depend on bacteria when producing defensive chemicals Using bacterial communication signal to modify gut microbe communities Deinococcus could be useful biotech species (review)

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182. BacterioFiles 235 - Dust DNA Detectives with Dr. Dunn
http://www.microbeworld.org/po... download (audio/mpeg, 12.61Mb)

Description:

This episode: I talk with Dr. Rob Dunn about his team's research into determining where a dust sample comes from based on the microbes present in it!

Download Episode (12.6 MB, 13.7 minutes)

Show notes:
News item/Journal Paper
The Dunn lab
Books

Other interesting stories:

Certain gut bacteria could help animals feed on new foods (paper) Potential for engineering our own microbiome Bacteria could help clean up radioactivity at Fukushima Bacteria could make better fruit fly traps (paper) Acid-resistant bacterium could help with stomach infections (paper)

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183. BacterioFiles 234 - Phone, Floor Phylum Forensics
http://www.microbeworld.org/po... download (audio/mpeg, 5.40Mb)

Description:

This episode: Learning things about people's identity and movements from microbial communities on their phones and shoes!

Download Episode (5.4 MB, 5.8 minutes)

Show notes:
News item 1/News item 2/Journal Paper

Other interesting stories:

Bacteria that live in the deepest part of the ocean Gut bacteria, birth conditions, and weight are related (paper) Bee microbiomes stay pretty constant Early gut bacteria associated with food allergy risk Gut bacteria could relate to ability to control blood sugar

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184. BacterioFiles 233 - Messy Microbes Maintain Mouse Microbiota
http://www.microbeworld.org/po... download (audio/mpeg, 8.15Mb)

Description:

This episode: Mice in less sanitary conditions have more diverse gut communities and perhaps less allergy!

Download Episode (8.15 MB, 8.8 minutes)

Show notes:
Journal Paper

Other interesting stories:

Fertilizer leads to less-helpful soil bacteria Sponge bacteria help corals get phosphorus Another way to use microbial electricity to produce hydrogen Soap has bacteria too Corals are eating plastic; is it harmful?

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185. BacterioFiles 232 - Exploring Enzymes' Element Effects
http://www.microbeworld.org/po... download (audio/mpeg, 8.21Mb)

Description:

This episode: Bacteria can convert soluble uranium to an insoluble form, and distinguish between different isotopes!

Download Episode (8.2 MB, 8.9 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Bacteria could help degrade environmental chemical contaminant (paper) Phage could treat dental infections Bacteria and grass together clean up soil Mutant E. coli keeps getting longer without dividing Algae could produce malaria vaccine

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186. BacterioFiles 231 - Creating Cancer-Killing Cultures
http://www.microbeworld.org/po... download (audio/mpeg, 7.86Mb)

Description:

This episode: Engineering Salmonella strains that kill cancer cells but leave healthy ones alone!

Download Episode (7.9 MB, 8.5 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Rocks floating on a lake house interesting microbes (paper) Aerobiology - how bacteria affect the weather Modified gut bacteria could control populations of insect disease vectors (paper) Gut microbiome's health effects are not so simple Some traits could be inherited via bacteria

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187. BacterioFiles 230 - Plant Prokaryotes Promote Protein Production
http://www.microbeworld.org/po... download (audio/mpeg, 11.18Mb)

Description:

This episode: Bacteria in and around plants can help fertilizer them, even in non-legume plants!

Download Episode (11.1 MB, 12.15 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Figuring out what microbes live (or lived) in NYC's subway Duckweed could be good microbe food for making biofuels (paper) Fungal endophytes help barley grow more sustainably Flower wallpaper made of vaccinated cells Plant-raping bacteria could help genetically modify yeast (paper)

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188. BacterioFiles 229 - Spore-formers Stimulate Serotonin
http://www.microbeworld.org/po... download (audio/mpeg, 10.41Mb)

Description:

This episode: Bacteria in mouse guts control the production of serotonin, an important neurotransmitter!

Download Episode (10.4 MB, 11.3 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Nitrogen-fixing bacterium could produce ethanol with fewer inputs After fecal transplant from overweight donor, recipient became obese Nitrogen-fixing bacteria partner with tiny animals in ocean (paper) Monitoring microbiome could help diagnose type 1 diabetes Breastfeeding could help prepare infant gut community for solid foods

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189. BacterioFiles 228 - Bacteria Beat Bat Blight
http://www.microbeworld.org/po... download (audio/mpeg, 7.04Mb)

Description:

This episode: Bacteria isolated from bats' skin inhibits the growth of bat-killing fungus!

Download Episode (7 MB, 7.6 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Bacteria could produce useful emulsifiers (paper) Fast-growing cyanobacteria could be good for producing things Making yeast produce more useful proteins such as insulin Microalga could be good biofuel oil producer Microbes might've helped create large gold deposits

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190. BacterioFiles 227 - Microbe Menaces Meningitis
http://www.microbeworld.org/po... download (audio/mpeg, 9.78Mb)

Description:

This episode: Colonizing ourselves with friendly bacteria could drive out more risky ones, such as those that cause meningitis!

Download Episode (9.8 MB, 10.6 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Bacterial vapors inhibit deadly plant pathogen (paper) Finding phages to fight tomato disease (paper) Immune system is important for maintaining gut community health Even the same species can have diversity in the gut Using bacterial power to generate clean water and electricity

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191. BacterioFiles 226 - Deep Dwellers Diversify
http://www.microbeworld.org/po... download (audio/mpeg, 10.38Mb)

Description:

This episode: Archaea living in the deep ocean (and their viruses) have clever ways to maintain diversity and adaptability!

Download Episode (10.3 MB, 11.25 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Super-slow-growing bacteria may evolve without reproducing Human gut bacterium is especially able to digest yeast cell walls Soil fungi can convert uranium to more recoverable insoluble form (paper) Viruses may have helped human brain develop through history Accessory genes make each bacterial strain unique

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192. BacterioFiles 225 - Implanting Internal Invader Immunity
http://www.microbeworld.org/po... download (audio/mpeg, 14.55Mb)

Description:

This episode: Don't have immunity? Create your own! Scientists engineer cells to destroy their HIV infections using the bacterial immune system!

Download Episode (14.5 MB, 15.8 minutes)

Show notes:
Journal Paper

Other interesting stories:

Insect bacteria produce small RNAs to communicate with hosts (paper) Yeast can make lots of useful things Engineering E. coli to better tolerate biofuels it produces (paper) Pathogens can resist phage infection, but often at a cost (paper) Microbes can survive on space vessels and cause problems away from Earth

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193. BacterioFiles 224 - Super Small Cells
http://www.microbeworld.org/po... download (audio/mpeg, 12.32Mb)

Description:

This episode: Scientists discover what seem to be ultra-small bacteria, possibly smaller than the theoretical minimum size!

Download Episode (12.3 MB, 13.4 minutes)

Show notes:
News item 1/News items 2/Journal Paper

Other interesting stories:

Bacteria could produce good biofuels from renewable resources (paper) Studying quorum sensing by 3D-printing bacterial biofilms (paper) Marine algae could be good source of nutrients alternative to fish oil Caterpillar mind-control virus seems to manipulate response to light 9 cool things about microbes

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194. BacterioFiles 223 - Fecal Fusions Forecast Fatness
http://www.microbeworld.org/po... download (audio/mpeg, 9.12Mb)

Description:

This episode: Sampling microbial populations in sewage from cities could reveal differences in the human populations, such as prevalence of obesity!

Download Episode (9.1 MB, 9.9 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Bacterial communities could be evidence about sexual crimes Bacteria around plants could fight plant diseases (paper) Microbes can greatly affect mouse gut's protective mucus layer Cyanobacteria could survive on Mars and produce breathable oxygen Garbage in Yellowstone permitted hot spring microbial rainbow

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195. BacterioFiles 222 - Cells Store Solar Sparks
http://www.microbeworld.org/po... download (audio/mpeg, 11.26Mb)

Description:

This episode: Bacteria engineered to produce liquid fuel can eat carbon dioxide and hydrogen from solar-powered water-splitting!

Download Episode (11.2 MB, 12.25 minutes)

Show notes:
Journal Paper

Other interesting stories:

Some bugs need their vitamin-producing microbes, but kill them to harvest the vitamins How specific gut microbes influence immune system (paper) Bacteria used to produce various food ingredients Bacteria could produce polyester beads that bind specific proteins (paper) Rainforest bacteria could help plants grow better in poorer soil (paper)

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196. BacterioFiles 221 - Co-culture Close Contact, Cats, and Cockerels
http://www.microbeworld.org/po... download (audio/mpeg, 12.77Mb)

Description:

This episode: More distantly related bacteria can help each other grow (and produce lots of hydrogen) by temporarily fusing with each other!

Download Episode (12.7 MB, 13.9 minutes)

Show notes:
News item/Journal Paper/Close contact image

Note: I said C. acetobutylicum was used in WWII to make acetone for bombs, but it was actually World War I, used to make cordite, a replacement for gunpowder.

Other interesting stories:

Gut microbes can affect brain's defensive barrier in mice Getting E. coli to produce higher amounts of nice-smelling biofuel compounds Using fungi to control avocado-damaging pests Bacterial proteins used to modify human cells' immune signaling (paper) Worm gut bacteria could help degrade plastic waste

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197. BacterioFiles 220 - Coliforms Cooperate by Conduit
http://www.microbeworld.org/po... download (audio/mpeg, 10.03Mb)

Description:

This episode: Bacteria can connect to each other with tiny tubes to exchange nutrients!

Download Episode (10 MB, 10.9 minutes)

Show notes:
News item/News item 2/Journal Paper

Other interesting stories:

If society collapsed, we could eat microbes Archaea could produce useful antibacterials too Tree-killing diseases can help forests be more diverse Animals have taken the genes bacteria use to poison each other Viruses can sometimes survive frozen for centuries (paper)

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198. BacterioFiles 219 - Fungi Facilitate Photosynthetic Fuels
http://www.microbeworld.org/po... download (audio/mpeg, 8.31Mb)

Description:

This episode: Fungi can act like sticky nets to help harvest algae for biofuels!

Download Episode (8.3 MB, 9 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Bacteria produce substance that could control harmful algal blooms (paper) Bacterial proteins in gut can protect mice from rotavirus Beware of contamination in microbial sequence survey studies Passionate kissing can transfer a lot of bacteria (not always a bad thing) Mouse virus can act like gut bacteria in maintaining gut health

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199. BacterioFiles 218 - Parasitoids Pass Protective Prokaryotes
http://www.microbeworld.org/po... download (audio/mpeg, 10.91Mb)

Description:

This episode: Parasitoid wasps spread helpful bacterial symbionts between their whitefly prey!

Download Episode (10.9 MB, 11.9 minutes)

Show notes:
Journal Paper

Other interesting stories:

Making magnetic bacteria do a dance (w/ video) Viruses have influenced evolution and genetics of plants, including wine grapes Deep-sea fungus produces potentially useful chemicals (paper) Effective genetic modification of fungi could lead to useful biotech processes Microbe-shaped (though not microbe-flavored) popsicles

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200. BacterioFiles 217 - Fungus Fortifies Fly Food
http://www.microbeworld.org/po... download (audio/mpeg, 8.41Mb)

Description:

This episode: Fruit flies have microbes that help them get more nutrition out of low-quality food!

Download Episode (8.4 MB, 9.1 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Strategies for treating infections without antibiotics Increased interest in microbes for agriculture Our genetics seem to affect our gut microbiota Algae farm over highway consumes CO2 from cars Fly bacteria engineered to prevent sleeping sickness tranmission (paper)

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201. BacterioFiles Special - ASM2015
http://www.microbeworld.org/po... download (audio/mpeg, 11.50Mb)

Description:

Here's my summary of ASM2015, an exciting weekend full of science.

Download Episode (11.5 MB, 12.5 minutes)

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Subscribe at iTunes, check out the show at TwitterMicrobeWorld, or Facebook


202. BacterioFiles 216 - Probiotic Promotes Peanut Permissiveness
http://www.microbeworld.org/po... download (audio/mpeg, 29.07Mb)

Description:

This episode: Kate Franz and Matt Woodruff from Audiommunity join me to talk about a clinical trial of peanut immunotherapy with probiotics to treat peanut allergies!

Download Episode (29 MB, 31.75 minutes)

Show notes:
News item/Journal Paper
Audiommunity - episode about food allergies

Other interesting stories:

Some viruses can survive being frozen for hundreds of years Resistance to certain gut pathogen correlates with certain gut microbes (paper) "Normal" gut microbiome probably as varied as we are ourselves Human gut communities are very different from chimpanzees' Figuring out how to engineer bacteria to tolerate biofuels they produce

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203. BacterioFiles 215 - Plasmid Pirates Piezophile Particles
http://www.microbeworld.org/po... download (audio/mpeg, 10.28Mb)

Description:

This episode: Deep-sea thermophile bacteriophage is pirated by another scurvy genetic element!!

Download Episode (10.2 MB, 11.2 minutes)

Show notes:
Journal Paper

Other interesting stories:

Viral remnants are important for human stem cells and development One Clostridium (scindens) defies overgrowth of another (difficile) Mosquito bacteria hurt dengue and malaria and mosquitoes Mitochondria (and thus eukaryotes) might've come from a parasite Studying phages that kill bee-killing bacteria

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204. BacterioFiles 214 - Cable-Chlorophyte Coop Conducts Current
http://www.microbeworld.org/po... download (audio/mpeg, 5.96Mb)

Description:

This episode: Cable bacteria and algae set up electric grid in sediments!

Download Episode (6 MB, 6.5 minutes)

Show notes:
Journal Paper

Other interesting stories:

Daily rhythms are important for gut microbes and their hosts Wild yeasts are very diverse in the smells they produce (paper) Gut microbiome may be involved in alcoholism (paper) Tiny tiny viruses can have very big effect on ocean carbon Mouse lupus correlates with certain gut bacteria

Image: Green algae o rocks at ShihTiPing (giant stone steps) coastal area in Taiwan. By: Wikipedia:User:Fred Hsu on en.wikipedia  

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205. BacterioFiles 213 - Bird Bacteria Bolster Babies
http://www.microbeworld.org/po... download (audio/mpeg, 6.54Mb)

Description:

This episode: Hoopoes inoculate their eggs with protective bacteria!

Download Episode (6.5 MB, 7 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Effects of whole grains vs. red meat on gut microbes (paper) Pill form might be good method for fecal transplant Algal protein discovery is relevant to biofuels but also cancer Skin microbe produces potentially useful antibiotic Archaea have taken many important genes from bacteria Image by: Didier Descouens

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206. BacterioFiles 212 - Ghosts Get Good Guarding
http://www.microbeworld.org/po... download (audio/mpeg, 9.84Mb)

Description:

This episode: Bacterial ghosts could make good vaccines for different things!

Download Episode (9.8 MB, 10.7 minutes)

Show notes:
Journal Paper

Other interesting stories:

What would happen if all microbes suddenly disappeared? Probiotics help protect children and pregnant women from heavy metal toxicity Using virus-like particles to kill harmful algae (paper) Yeast make nice beer scent to attract fruit flies Algae-powered electric Grand Prix cars

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207. BacterioFiles 211 - Stenotrophomonas Summons Snare-Setting Saviors
http://www.microbeworld.org/po... download (audio/mpeg, 9.95Mb)

Description:

This episode: Bacteria in soil signal to fungi to save them from predatory roundworms!

Download Episode (9.9 MB, 10.8 minutes)

Show notes:
News blog/Journal Paper

Other interesting stories:

Bacteria eat photographs to make cool, creepy art Microbial communities in NYC Central Park are as diverse as anywhere Giant clams catch light just right to disperse it to their symbiotic algae Changing yeast's environment can allow it to tolerate (and produce) more ethanol Hydrothermal vent viruses seem to survive by helping hosts adapt (paper)

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208. BacterioFiles 210 - Archaea Acquired Alternative Abilities
http://www.microbeworld.org/po... download (audio/mpeg, 7.42Mb)

Description:

This episode: Genes taken from bacteria may have been important for the evolution of distinct groups of archaea!

Download Episode (7.4 MB, 8 minutes)

Show notes:
Journal Paper

Other interesting stories:

Bacterial signals could tell cancer cells to stop causing problems (Sulfite-free) wine could have helpful bacteria Probiotic prevents chickens from carrying human pathogen (paper) Plants keep helpful bacteria in their seeds Bacteria are helping break down drugs in waterways

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209. BacterioFiles 209 - Myxococcus Menace Motivates Megastructures
http://www.microbeworld.org/po... download (audio/mpeg, 8.81Mb)

Description:

This episode: Microbial predators in soil cause microbial prey to build fortifications!

Download Episode (8.8 MB, 9.5 minutes)

Show notes:
Journal Paper

Other interesting stories:

Using bacteria to produce adhesives that shellfish use underwater Maintaining gut community may be important for surviving intensive care Human gut might actually have some useful bacteria for biofuels too Termites use mixture of fungal and bacterial symbionts Bacteria help seeds sprout faster

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Thumbnail by: Trance Gemini on de.wikipedia.org - Starving colony of Myxococcus xanthus forms fruiting bodies.



210. BacterioFiles 208 - Discovering Dietary Dwellers
http://www.microbeworld.org/po... download (audio/mpeg, 21.65Mb)

Description:

This episode: Dr. Angela Zivkovic discusses the microbes present in our food!

Download Episode (21.6 MB, 23.6 minutes)

Show notes:
Journal Paper

Other interesting stories:

Archaea seem to be producing vitamin B12 in oceans Tree microbiomes differ between species like animals' Some bacteria can help plants form root nodules better (paper) Biofilms can be useful materials for different things, like sticking to steel Electricity from microbe metabolism could power waste treatment

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211. BacterioFiles 207 - Microbe Messages Mire Malaria Movement
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Description:

This episode: Gut microbes may induce an immune response that protects against malaria!

Download Episode (10.2 MB, 11.2 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Gut bacteria help immune responses even in the lungs (of mice) Conductive bacteria can encase themselves in uranium Discovering and prepping bacteria to degrade environmental pollutants Using bacteria to reduce arsenic toxicity in rice Soil fungi protect potatoes from parasites

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212. BacterioFiles 206 - Mollusc Maneuvers Microbe Machines to Macerate Maples
http://www.microbeworld.org/po... download (audio/mpeg, 9.73Mb)

Description:

This episode: When digesting wood, shipworms outsource their microbial symbionts from gut to gills!

Download Episode (9.7 MB, 10.6 minutes)

Show notes:
Journal Paper

Other interesting stories:

Swimming alga Euglena could help treat iron overdose (paper) Bacteria in bees could produce useful antimicrobials Tough bacteria could help make nuclear waste storage safer Learning about ancient cultures from their fossilized feces (paper) Using phages to make wastewater treatment better

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213. BacterioFiles 205 - Colon Community Counterattacks Cholera
http://www.microbeworld.org/po... download (audio/mpeg, 10.56Mb)

Description:

This episode: Microbes in the human gut seem to prevent/inhibit cholera!

Download Episode (10.5 MB, 11.5 minutes)

Show notes:
Journal Paper

Other interesting stories:

Gut microbes make lots of chemicals; some inhibit pathogens (paper) Bacteria produce inhibitors of fungal crop pathogens (paper) Phages could make pathogens less able to infect, in addition to killing them Recycling diapers by growing mushrooms in them Not ethanol, or butanol: now, biopropane

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214. BacterioFiles 204 - Animalcules Assist Agave Amino Accumulation
http://www.microbeworld.org/po... download (audio/mpeg, 17.58Mb)

Description:

This episode: Bacteria living in plants seem to be contributing to plants' nutrition, possibly reducing the need for fertilizer!

Download Episode (17.5 MB, 19.15 minutes)

Show notes:
Journal Paper

Other interesting stories:

Certain gut bacteria associated with lower risk of food allergy in mice Bacteria produce antifungal compounds, could protect crops (paper) Plant partner microbes knock on roots to signal their presence Microbes in your home form unique community, move with you to new locations Bacteria interfere with wine fermentation via prions

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215. BacterioFiles 203 - <i>P. putida</i> Promotes Plant Pollutant Purification
http://www.microbeworld.org/po... download (audio/mpeg, 6.92Mb)

Description:

This episode: Bacteria living in plants could help plants clean up cancer-causing pollutants!

Download Episode (6.9 MB, 7.5 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Amphibian skin bacteria can fight deadly infectious fungus (paper) Human skin fungus surprisingly found in harsh ocean environments Using bacteria to remove stinky compounds from wastewater Making painkillers from microbes instead of plants Fungal parasites only influence behavior of their specific ant host species

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216. BacterioFiles 202 - Controlling Coliform Computers
http://www.microbeworld.org/po... download (audio/mpeg, 15.98Mb)

Description:

This episode: Programming bacteria to sense and keep genomic records of environmental inputs!

Download Episode (15.9 MB, 17.4 minutes)

Show notes:
News item 1/News item 2/Journal Paper

Other interesting stories:

Biocontrol fungus responds offensively to plant pathogen (paper) Fungi that zombify ants lurk in wait outside ant colony for fresh victims We need caution interpreting microbiome data Algal viruses can have big impact on algal blooms, and thus on CO2 Some cyanobacteria can grow using only far-red light that's invisible to us

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217. BacterioFiles 201 - Plastic-Producing Prokaryote Process
http://www.microbeworld.org/po... download (audio/mpeg, 7.12Mb)

Description:

This episode: Bacteria from wastewater treatment sludge can produce lots of biodegradable plastic!

Download Episode (7.1 MB, 7.75 minutes)

Show notes:
Journal Paper

Other interesting stories:

Soil bacterium spores could treat tumors when injected In mice, antibiotics early in life disrupt metabolism Figuring out what our microbiome does in the body after we die (paper) Microbes affect geological formations in caves Insect gut microbes may be good source of new antibiotics

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Image: Colonies of B. subtilis. By: Wikipedia user: Debivort



218. BacterioFiles 200 - Converted Clostridium Consumes Carbon monoxide
http://www.microbeworld.org/po... download (audio/mpeg, 16.09Mb)

Description:

This episode: Carbon monoxide-eating bacteria get modified to produce more useful products!

Download Episode (16 MB, 17.5 minutes)

Show notes:
Journal Paper

Other interesting stories:

Other mosquito microbes compete with and inhibit Wolbachia Helicobacter extract seems to help prevent asthma (paper) Lots of microbes living in water drops suspended in tar Spores could be good for vaccines delivered to mucosal surfaces (review) Various archaea are floating around in the air (paper)

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219. BacterioFiles 199 - Prokaryote Protein Provokes Problem
http://www.microbeworld.org/po... download (audio/mpeg, 11.42Mb)

Description:

This episode: A protein from gut bacteria has been tentatively linked with a human protein related to eating disorders!

Download Episode (11.4 MB, 12.4 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Plant virus affects parasitism suffered by insect that carries the virus (paper) Bacteria could help make more powerful lasers (paper) Gut microbes can control gene expression of gut cells somewhat Using bacterial immune system to turn off HPV defenses in cervical cancer Gut community composition could be used to detect cancer

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220. BacterioFiles 198 - Dampening Dust Defense
http://www.microbeworld.org/po... download (audio/mpeg, 6.27Mb)

Description:

This episode: Modified probiotic bacteria could reduce life-threatening allergies!

Download Episode (6.3 MB, 6.8 minutes)

Show notes:
Journal Paper

Other interesting stories:

Bacteria can be toxic to tomato late blight pathogen (paper) Phages could be very good at treating C. difficile infections Soil cyanobacteria can help plants in many ways (review) Finding heavy metal-resistant bacteria near nuclear storage sites (paper) Using phage to prevent infection rather than to kill pathogens (paper)

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221. BacterioFiles 197 - Fucose Feeds Friendly Fighters
http://www.microbeworld.org/po... download (audio/mpeg, 11.87Mb)

Description:

This episode: When sensing an infection, mice make sure to keep their gut bacteria well-fed. And it pays off!

Download Episode (11.8 MB, 13 minutes)

Show notes:
News item/News item 2/Journal Paper

Other interesting stories:

Microfluidic screening discovers that algae produce more biofuel under yellow light Using bacterial immune system to modify bacterial behavior Human parasite is helpful for the fly that carries it Bacteria can survive dehydration by manipulating salt crystals Studying day-to-day changes in gut microbe communities

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222. BacterioFiles 196 - Flagellin Facilitates Flu-shot Function
http://www.microbeworld.org/po... download (audio/mpeg, 14.70Mb)

Description:

This episode: Bacteria are important for a good immune response to unadjuvanted influenza vaccines!

Download Episode (14.6 MB, 16 minutes)

Show notes:
News item 1/News item 2/Journal Paper

Other interesting stories:

Supermarket makes its own electricity from food waste Including oncolytic virus in treatment could save limbs threatened by cancer Engineered gut bacteria inhibit obesity in mice Microbes in soil instead of chemicals could improve agriculture Finding phages to treat Pseudomonas aeruginosa infections

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223. BacterioFiles 195 - CRISPR/Cas Cuts Cancer Causers
http://www.microbeworld.org/po... download (audio/mpeg, 10.90Mb)

Description:

This episode: Bacterial antivirus system could treat chronic herpes virus infections!

Download Episode (10.9 MB, 11.9 minutes)

Show notes:
Journal Paper

Other interesting stories:

Studying bacteria that consume and produce electricity Fungus living in rice seems like it evolved from rice pathogen (paper) Bacteria growing with plants could help clean air in buildings (paper) Understanding how Caulobacter tolerates high levels of uranium (paper) Report about how viruses are more than pathogens

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224. BacterioFiles 194 - Squirrel Sequence Stops Similar Sickness
http://www.microbeworld.org/po... download (audio/mpeg, 9.27Mb)

Description:

This episode: Remnants of viral infection left behind in squirrels' genome may protect them from incoming viruses!

Download Episode (9.3 MB, 10.1 minutes)

Show notes:
Journal Paper

Other interesting stories:

Marine photosynthetic bacteria could be good, easy continuous biofuel producers Immune system and gut bacteria have complex interactions What happens to gut community when pathogens infect Bacteria and fungi may lower their defenses when interacting (paper) Parasite from cats could help immune system fight cancer

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225. BacterioFiles 193 - Milk Modifies Monkey Microbes
http://www.microbeworld.org/po... download (audio/mpeg, 7.70Mb)

Description:

This episode: Being raised with their mother and breastmilk vs. bottle-fed in a nursery significantly affects macaque microbiomes and their immune system profile!

Download Episode (7.7 MB, 8.4 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Figuring out which gut microbes correlate with susceptibility to C. difficile problems (paper) Phage communities in mouth may be linked to dental health (paper) Fecal transplant restores diverse gut community that looks like donor's (paper) Modified E. coli could help weight loss by reducing appetite (paywall) Bacterial symbionts in mosquitoes could prevent dengue transmission

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226. BacterioFiles 192 - Susceptibility Separates Streptococcus Strategies
http://www.microbeworld.org/po... download (audio/mpeg, 14.97Mb)

Description:

This episode: Pathogenic and non-pathogenic microbes have different strategies for interacting with us, even when they have a common ancestor!

Download Episode (14.9 MB, 16.3 minutes)

Show notes:
Journal Paper

Other interesting stories:

Bacteria can transfer electrons around even without nanowires (paper) Bacterial endophytes can inhibit/control plant pathogens (paper) Seemingly harmless virus may kill hard-to-treat breast cancer Bacteria protect fish from pathogen by preventing it from communicating (paper) Microbes in soil can affect plant flowering

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227. BacterioFiles 191 - Coats Compose Current Conduits
http://www.microbeworld.org/po... download (audio/mpeg, 9.75Mb)

Description:

This episode: Bacterial nanowires are made of the cells' outer membranes!

Download Episode (9.75 MB, 10.6 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Algae in low light can switch quantum light harvesting on or off Fecal transplants continue to seem like a great treatment for gut community imbalance Good gut microbe community seems important for survival after stem cell transplant Microbes on ocean plastic could have good and bad effects Bacteria could help inhibit pathogens of bees and bats

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228. BacterioFiles 190 - Bacteriophages Bust Biofilm Beacons
http://www.microbeworld.org/po... download (audio/mpeg, 14.88Mb)

Description:

This episode: Engineered phages can both kill bacteria and disrupt their communications!

Download Episode (14.8 MB, 16.2 minutes)

Show notes:
Journal Paper

Other interesting stories:

Tiny microbes affect temperature by how much sunlight is reflected off ice Bacteria could help clean uranium from aquifers Fungus can kill poison ivy Differences found in gut microbes between children with or without diabetes Using viruses to understand tiny physics better

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229. BacterioFiles 189 - Saliva Slows Sprout Supporter
http://www.microbeworld.org/po... download (audio/mpeg, 5.45Mb)

Description:

This episode: Fungi living in grasses make toxic compounds to defend against herbivores, but some animals can overcome this defense with their saliva!

Download Episode (5.4 MB, 5.9 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Early-life exposure to microbes seems linked to less asthma Bacteria help tomato plants tolerate salt (paper) Bacteria infecting mosquitoes could control malaria transmission Phages are increasingly of interest for treating infections Feeding healthy mice phage causes slight immune response and nothing else (paper)

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230. BacterioFiles 188 - Rat Residents Relieve Resin Roughness
http://www.microbeworld.org/po... download (audio/mpeg, 9.58Mb)

Description:

This episode: Gut bacteria in Mojave desert woodrats help them detoxify and eat toxic creosote bushes!

Download Episode (10 MB, 10.8 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

It can be hard to recover a good microbiota Aphids' bacterial symbionts can activate plant defenses against aphids Probiotic bacterial strain could protect against cadmium toxicity (paper) Predatory bacteria can prey on pathogens (paper) Microbes can prevent some species from hybridizing

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231. BacterioFiles 187 - Bacteria Bolster Bedbug Biotin
http://www.microbeworld.org/po... download (audio/mpeg, 7.10Mb)

Description:

This episode: Some Wolbachia bacteria produce vitamin B7 for their insect hosts!

Download Episode (7.1 MB, 7.75 minutes)

Show notes:
Journal Paper

Other interesting stories:

Play classic video games with live microbes Bacterial polysaccharides could make better low-fat products Getting rid of H. pylori could be associated with obesity Bacteria fight against bad fungal infection of rice Converting plant parts directly into ethanol

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232. BacterioFiles 186 - Matched Mice, Mismatched Microbiota
http://www.microbeworld.org/po... download (audio/mpeg, 7.41Mb)

Description:

This episode: Gut microbes can be different even in genetically identical mice in similar conditions!

Download Episode (7.4 MB, 8 minutes)

Show notes:
Journal Paper

Other interesting stories:

Bacteria could make building materials using less energy Even in placenta bacteria can be important for health Seeing if algae (and thus, plants) can survive in space Bacteria can make plastic out of methane gas Some fungi could adapt to Mars-like conditions within a few days (paper)

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233. BacterioFiles 185 - Bacteroid Builds Beta-lactam Buffer
http://www.microbeworld.org/po... download (audio/mpeg, 7.83Mb)

Description:

This episode: Antibiotic-degrading probiotics protect mouse gut microbes from hostile pathogen takeover after antibiotic treatment!

Download Episode (7.8 MB, 8.5 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Insect bacterial symbionts can pass to offspring through sperm (paper) Studying human history thru microbes in fossilized feces Fungi can clean up composting-resistant pollutants in soil Microbes could make useful product from industrial wastewater Bacterial toxin could be used to target colon cancer cells

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234. BacterioFiles 184 - Fungus Friends Fabricate Fragrance
http://www.microbeworld.org/po... download (audio/mpeg, 12.59Mb)

Description:

This episode: Truffle's microbiome helps produce its attractive aromas!

Download Episode (12.5 MB, 13.6 minutes)

Show notes:
Journal Paper

Other interesting stories:

Microbes in lungs (of mice) seem to help reduce inflammation Link between early antibiotics and asthma may be just correlations with genetics Pancreatic cancer might be detectable by changes in mouth bacteria Understanding pandas' gut bacteria could help us help them Native microbes on grape leaves can resist pesticide treatments (paper)

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235. BacterioFiles 183 - Simplex-Sick Stem Cell Salve
http://www.microbeworld.org/po... download (audio/mpeg, 8.32Mb)

Description:

This episode: Cancer-killing viruses could work even better when loaded into stem cells!

Download Episode (8.3 MB, 9 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Many genes can be swapped in area around fungal mycelia (paper) Fungus could help control invasive tree species Dust storms can have effects by spreading fungal spores (paper) Hand bacteria differ between people in different places Microbiome manipulation seems to be rising as a medical treatment

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236. BacterioFiles 182 - Chloroplast Colonizers' Contradictory Conflicts
http://www.microbeworld.org/po... download (audio/mpeg, 17.71Mb)

Description:

This episode: BacterioFiles teams up with The Plant Pathology Podcast to talk about how microbes living in plants sometimes team up with the plants, sometimes with plant pathogens!

Download Episode (17.7 MB, 19.25 minutes)

Show notes:
Journal Paper
Lee et al. 2009 paper: Fusarium sometimes prevents corn smut

Other interesting stories:

Deep-sea vent viruses sabotage cell storage Bacteria probably could survive accidental trip to Mars Microbes that survive in petroleum could do well in other harsh processes Many cyanobacteria produce potentially useful antifungal compounds (paper) (paper) Poor agricultural practices may reduce soil microbe diversity (paper)

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237. BacterioFiles 181 - Spore-formers Smash Salmonella's Solanum Strongholds
http://www.microbeworld.org/po... download (audio/mpeg, 9.63Mb)

Description:

This episode: Soil bacteria could help prevent food poisoning from bacteria in raw tomatoes!

Download Episode (9.6 MB, 10.5 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Life history correlates with gut communities, sometimes expected and sometimes not Single bacterial species can consume multiple different organic gases Skin bacteria may affect how wounds heal Microbes kill frog-killing fungi Algae can use many wavelengths of light that plants cannot

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238. BacterioFiles 180 - Phage Functions Fight Fortifications
http://www.microbeworld.org/po... download (audio/mpeg, 8.35Mb)

Description:

This episode: Some phages can fight back against bacterial defenses with recently discovered genes!

Download Episode (8.3 MB, 9 minutes)

Show notes:
Journal Paper

Other interesting stories:

Antibiotic treatment of certain bacterial disease associated with weight gain Knowing what is a healthy microbiome is tricky Knowing how the microbiome is related to obesity is tricky Genes for antibiotics in fungi could have come from bacteria Antibiotics could disrupt newborns' adaptation to microbes

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239. BacterioFiles 179 - Functionless Phages Feel Fatiguing
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Description:

This episode: Defective phages in bacterial genomes can still have burdensome effects! Why do the bacteria keep them around?

Download Episode (10.4 MB, 11.3 minutes)

Show notes:
Journal Paper

Other interesting stories:

Microbes are essential and important for all life on the planet Modified virus could treat most dangerous brain cancers Microbes help inhibit worms that harm plants (paper) Trying to figure out what gut viruses people had in the 14th century (paper) Beewolves have close hereditary connection with their bacterial symbionts

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240. BacterioFiles 178 - Hadza Hunters Have Heterogeneous Helpers
http://www.microbeworld.org/po... download (audio/mpeg, 12.99Mb)

Description:

This episode: Modern hunter-gatherers have very different gut microbes from people from agricultural societies!

Download Episode (12.9 MB, 14.1 minutes)

Show notes:
News item 1/News item 2/Journal Paper

Other interesting stories:

Probiotic doesn't seem to help colic in babies Different communities live in different places in a house Bacteria protect Earth from mirror-image molecules Communities of microbes and fungi could clean up oil spill pollution Parasites can bend even plants to their will in order to spread

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241. BacterioFiles 177 - Phages Fight Food Filth
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Description:

This episode: Phages could be used to reduce infection with dangerous bacteria from meat and vegetables!

Download Episode (13 MB, 14.2 minutes)

Show notes:
News item/Journal Paper
Agriculture Science Today podcast discussion of this paper

Other interesting stories:

Slime mold computers get more complex Certain microbes on the body may protect against HIV infection Designing more bacteria-friendly sewer concrete Fungal compounds may help with Alzheimer's Scientists make a whole yeast chromosome synthetically

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242. BacterioFiles 176 - Bacteria Bust Biodiesel Builders
http://www.microbeworld.org/po... download (audio/mpeg, 11.09Mb)

Description:

This episode: Algae-killing bacteria could help improve biofuel recovery processes!

Download Episode (11 MB, 12 minutes)

Show notes:
Journal Paper

Other interesting stories:

Soil microbes could be useful for weed control About how bacteria are beautiful Making biofuel bacteria more resistant to harsh process chemicals New ways of producing high-energy biofuels Understanding how fungus-like bacteria help plants grow (paper)

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243. BacterioFiles 175 - Bacteria Build Better Biofilms
http://www.microbeworld.org/po... download (audio/mpeg, 10.59Mb)

Description:

This episode: Engineered bacteria can be made to produce many different useful kinds of biofilm!

Download Episode (10.5 MB, 11.5 minutes)

Show notes:
News item 1/News item 2/Journal Paper

Other interesting stories:

Some kinds of mouth fungi may keep other bad ones in check Fossilized viruses found in fossilized bacteria Breastfeeding is important for a healthy gut community Studying how microbes in water treatment remove contaminating chemicals (paper) Bacteria break down cocoa into more healthy stuff

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244. BacterioFiles 174 - Synthetic Cells Sense and Send Signals
http://www.microbeworld.org/po... download (audio/mpeg, 14.64Mb)

Description:

This episode: Bacteria with engineered circuits and detect and keep a record of stuff in their environment, like in the gut!

Download Episode (14.6 MB, 15.9 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Bacteria turn lots of city waste into useful energy Antibiotics may sometimes be more harmful than helpful It's important to take care of gut bacteria Gut bacteria are important for immune system development Gut microbes may influence the development of type 1 diabetes

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245. BacterioFiles 173 - Illuminated Invader Inhibits Irritation
http://www.microbeworld.org/po... download (audio/mpeg, 9.96Mb)

Description:

This episode: Virus helps to modify mice such that certain colors of light can cause or prevent pain!

Download Episode (10 MB, 10.8 minutes)

Show notes:
Journal Paper

Other interesting stories:

Ocean bacteria give off gas that makes clouds Killing cancer with virus plus releasing immune system's brakes Helping bacteria clean up oil spills Microbes can make scents and flavors more sustainably Fungi are important for carbon stored in or released from soils too

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246. BacterioFiles 172 - Sunlight-Snackers Seize Sparks
http://www.microbeworld.org/po... download (audio/mpeg, 9.25Mb)

Description:

This episode: Some photosynthetic bacteria can use electricity for their metabolism to make useful stuff too!

Download Episode (9.2 MB, 10 minutes)

Show notes:
News item 1/News item 2/Journal Paper

Other interesting stories:

Plants and their associated root microbes seem to evolve together (paper) What was thought to be pigments in fossil feathers might actually have been bacteria Yeast cells help understand how Alzheimer's drug works in humans Bacteria help plants clean up metal-contaminated soils Understanding how bacteria colonize our bodies

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247. BacterioFiles 171 - Segments Select Specific Strains
http://www.microbeworld.org/po... download (audio/mpeg, 15.12Mb)

Description:

This episode: Ahmed Gomaa and I discuss how to keep some microbes and get rid of others using bacteria's own immune system!

Download Episode (15.1 MB, 16.5 minutes)

Show notes:
Journal Paper

Other interesting stories:

New, simpler genetic switch controls cancer-killing viruses more specifically Bacteria help plants grow better in drought conditions (paper) Sometimes not-so-clean could be healthy Different kinds of rooms have different microbes Peat acts as sink for microbial electrons, keeping them from producing methane (a greenhouse gas)

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248. BacterioFiles 170 - Good Copper, Bad Copper
http://www.microbeworld.org/po... download (audio/mpeg, 19.17Mb)

Description:

This episode: With guest host Susan Gardner! We discuss nitrogen-fixing plant-friendly bacteria that help plants grow in copper-contaminated soil, helping to clean it up!

Download Episode (19.1 MB, 20.9 minutes)

Show notes:
Journal Paper

Other interesting stories:

Liquid crystals could be even more useful with bacteria in them Adding bacteria can affect plants' microbiome and metabolism (paper) New FDA-approved bank for fecal transplant material New way of testing and improving potential Salmonella-based vaccines Cacao microbe helps protect plant from pathogens (paper)

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249. BacterioFiles 169 - Microbes Meddle with Mesophilic Malaria
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Description:

 This episode: Ambient temperature seems to affect how much insect bacteria can interfere with transmission of malaria!

Download Episode (7.85 MB, 8.5 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

One kind of yeast divides age-related damage evenly between daughter cells instead of giving all of it to one How gut bacteria break down fiber we eat Making interesting art/clothing with dangerous bacteria Study of how soil microbes react to warming environment (paper) Gut bacteria associated with obesity are more common in some places than in others

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250. BacterioFiles 168 - Plentiful Plant Pathogen Partners
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Description:

This episode: Multiple different fungi kill insects and give their nutrients to plant partners!

Download Episode (8.3 MB, 9 minutes)

Show notes:
Journal Paper

Other interesting stories:

How much do airborne microbes affect the atmosphere? (paper) Small fungal parasites infect roundworms even deep in the ocean (paper) Modifying bacteria to produce more jet biofuel (paper) Microbes affect animal behavior in many interesting ways (paper) Delicious alert: chestnut mousse makes a good carrier for probiotics (paper)

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251. BacterioFiles 167 - Gut Grows Gluten Gluttons
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Description:

This episode: Some bacteria in the guts of healthy volunteers are able to break down gluten!

Download Episode (9.7 MB, 10.5 minutes)

Show notes:
Journal Paper

Other interesting stories:

Biotech company is looking to be able to grow bricks using bacteria Certain communities of microbes may be related to preterm births Microbes in soil can make a big difference to plants Protists in animal guts seem to have evolved to be specific to their respective hosts Tasty bacteria and fungi are becoming a bigger part of restaurant cuisine

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252. BacterioFiles 166 - Metamorphosis Microbes Mapped
http://www.microbeworld.org/po... download (audio/mpeg, 7.49Mb)

Description:

This episode: Discovering how butterflies' bacteria change from caterpillar to adult!

Download Episode (7.5 MB, 8.1 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Virus could help treat otherwise hard-to-treat breast cancer Harnessing bacterial spores' water-absorbing ability to generate electricity Vitamin-making fungus could make oil too (paper) Microbes could be used to convert methane into useful liquids or solids Flatulence may be a good sign for your gut

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253. BacterioFiles 165 - Bacillus Biofilms Balk Bilks
http://www.microbeworld.org/po... download (audio/mpeg, 13.14Mb)

Description:

This episode: Interview with Jordi van Gestel: cheaters in bacterial communities don't always succeed!

Download Episode (13.1 MB, 14.25 minutes)

Show notes:
Journal Paper

Other interesting stories:

Showing how harmless fungus prevents aflatoxin-producing fungal growth (paper) New large phage is good at killing anthrax Plant-related microbes could be important part of indoor microbial mix (paper) We need to rethink use of antibiotics (paper) Studying how building design and functions affect which bacteria are present

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254. BacterioFiles Micro Edition 164 - Sponge Symbionts Synthesize Stuff
http://www.microbeworld.org/po... download (audio/mpeg, 8.34Mb)

Description:

This episode: Bacteria symbiotic with sea sponges make many potentially useful compounds!

Download Episode (8.3 MB, 9 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Pollutants may kill off certain important microbes in soils Certain gut microbes help break down dietary fiber Engineered yeast produces impressive amounts of lipids for biodiesel Infection with Salmonella helped mice's asthma Searching marine microbial genomes for good drugs

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255. BacterioFiles Micro Edition 163 - Pseudomyrmex Sidekicks Stop Sprout Sickness
http://www.microbeworld.org/po... download (audio/mpeg, 9.40Mb)

Description:

This episode: Ants teaming with bacteria help defend plants from bacterial pathogens!

Download Episode (9.4 MB, 10.2 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Virus modified to infect and destroy only cancer Compounds from ocean bacteria could inhibit pathogens without inducing resistance Dog-related microbes could affect the gut microbe in ways that protect against allergies (paper) Stomach bacteria are most peaceful in humans they've co-evolved with Bacteria in toxic environment could be useful converting toxic elements into useful electronic components

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256. BacterioFiles Micro Edition 162 - Desert Dwellers Densify Dunes
http://www.microbeworld.org/po... download (audio/mpeg, 9.34Mb)

Description:

This episode: Spraying cyanobacteria could turn deserts into useful land!

Download Episode (9.3 MB, 10.13 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

How multicellular cyanobacteria communicates between cells (paper) Microscopic protozoa could be used instead of animals for cosmetic testing Slime molds are good like computers at finding best routes to different places Bacteria can divide into two distinct cells with different behaviors Students program bacteria to behave in predictable ways in given situations

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257. BacterioFiles Micro Edition 161 - Permafrost Produces Perceptible Pithos
http://www.microbeworld.org/po... download (audio/mpeg, 9.51Mb)

Description:

This episode: The largest virus so far has been discovered in ancient Siberian permafrost!

Download Episode (9.5 MB, 10.3 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Plants seem to stimulate bacteria to degrade pollutants (paper) Gene therapy with virus could help repair brain damages Phages could soon be important for treating bacterial infections Certain portions of gut microbiome, and inflammation, associated with colon cancer (paper) (TWiM 71) Yogurt probiotics might not change gut community in major ways

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258. BacterioFiles Micro Edition 160 - Residents Regulate RNA Response
http://www.microbeworld.org/po... download (audio/mpeg, 9.50Mb)

Description:

This episode: Gut microbe communities can help regulate the immune response to pathogens!

Download Episode (9.5 MB, 10.3 minutes)

Show notes:
News item/Journal Paper
Paper about synthetic small RNA treatment

Other interesting stories:

Bacteria can convert CO2 directly to liquid compound (paper) Dog-related microbes seem especially good at positively affecting our immune system Bacteria inside insects protect from viruses, but there is a trade-off Soil fungus that kills insects could control mosquito populations in water too Bacteria already living in underground resource areas could help us better use these resources

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259. BacterioFiles Micro Edition 159 - Drastic Diet Develops Different Dwellers
http://www.microbeworld.org/po... download (audio/mpeg, 12.29Mb)

Description:

This episode: Gut microbe communities can change rapidly to accommodate major diet changes!

Download Episode (12.2 MB, 13.3 minutes)

Show notes:
News item 1/News item 2/Journal Paper

Other interesting stories:

Mother's immune system might actually transport good bacteria into breastmilk for the baby's sake Deep rock-living microbe communities are surprisingly similar in far distant places Bacteria seem to be riding methane bubbles up from sea floor and eating them Testing how phages interact with gut bacteria in mouse model (paper) Unusual bacterial colonies can respond to mechanical forces

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260. BacterioFiles Micro Edition 158 - Partners Provide Protein
http://www.microbeworld.org/po... download (audio/mpeg, 9.88Mb)

Description:

This episode: Different bacteria working together can thrive better than when working alone!

Download Episode (9.9 MB, 10.75 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Our microbes and our food go together more than you would think Using phage proteins to target and destroy bad bacteria Bacteria may be important in how hyenas communicate through odor (paper) Fewer gut microbes may be associated with colon cancer Bacteria take electrons directly from other bacteria to make methane

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261. BacterioFiles Micro Edition 157 - Azotobacter Assists Algae
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Description:

This episode: Nitrogen-fixing bacteria could provide nitrogen to algae in biotech processes!

Download Episode (7.4 MB, 8 minutes)

Show notes:
Journal Paper

Other interesting stories:

Chemotherapy agent seems to require gut bacteria for its cancer-killing effect Bacteria can live even in nutrient-poor caves Fungi seem to make their own wind to disperse their spores The probiotics of today may have been pathogens in the past Soil microbes help fruit trees grow a lot more

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262. BacterioFiles Micro Edition 156 - Killing Chemicals Cancel Chemotherapy Quality
http://www.microbeworld.org/po... download (audio/mpeg, 9.45Mb)

Description:

This episode: Gut bacteria seem to be important for different kinds of anti-cancer chemotherapy treatments!

Download Episode (9.4 MB, 10.25 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Working off bacteria's own toxins could help develop new antibiotics Gut bacteria may (perhaps) affect more of the body than just the gut Soil microbe discovered that could protect plants from insect pests (paper) Using bacterial immune system to modify fruit flies' genome (paper) Humans today seem to have viruses from Neandertals in our genomes

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263. BacterioFiles Micro Edition 155 - Cells Save Superannuated Sequences
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Description:

This episode: Bacteria are able to incorporate DNA from the environment into their genomes, even if it's thousands of years old!

Download Episode (9.6 MB, 10.5 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Printing bacteria in 3D could enhance their cooperative abilities (paper) Viruses could be used to help shape nanowires in better batteries Butyrate-producing gut bacteria help regulate the gut immune system Rainforest bacteria break down the toughest parts of plants Lab bacteria seem to continue evolving higher fitness indefinitely

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264. BacterioFiles Micro Edition 154 - Improving Integration in Inherited Illness
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Description:

This episode: Scientists figure out how to improve retroviral targeting in the genome, to make gene therapy safer!

Download Episode (6.9 MB, 7.5 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Infants may be more susceptible to infection because their immune system is focusing on allowing good bacteria to grow in their gut Ascetic new microbe found in spacecraft clean rooms Scientist wins fellowship for work on trying to preserve good bacteria Improving a virus's ability to target and destroy cancer Soil fungus may reduce numbers of ticks

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265. BacterioFiles Micro Edition 153 - Social Swarmers Synchronize Cell Systems
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Description:

This episode: Bacteria that swarm in the soil cooperate or compete based on one particular protein structure!

Download Episode (10.5 MB, 11.5 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Special bacteria could help make better-tasting rice vinegar (paper) Soil microbes may be essential for health of an ecosystem Fungi in compost actually degrade polyester somewhat (paper) Excellent FAQ about the human microbiome Bacteria in soil can inhibit diseases of wheat (paper)

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266. BacterioFiles Micro Edition 152 - Scientists Subjugate Circadian Cycles
http://www.microbeworld.org/po... download (audio/mpeg, 11.26Mb)

Description:

This episode: Circadian rhythms in bacteria are amazingly simple, and now scientists have figured out how to modify their effects to help produce useful chemicals!

Download Episode (11.2 MB, 12.25 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Possible association between some of your genes and your gut bacteria Bacteria could help get more copper from mines Feeding soil microbes is important (PDF) Developing engineered biotech bacteria that can sense and respond better to toxic metabolites Bacteria use energy-sucking proteins to form ice crystals that punch entry holes into plants

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267. BacterioFiles Micro Edition 151 - Morels Make Microbial Meals
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Description:

This episode: Fungi herd and raise bacteria for slaughter!

Download Episode (13.2 MB, 14.4 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Phages could specifically kill C. difficile Using evolution to make big changes in bacterial genomes Comparing strains of herpes confirms out-of-Africa human history Types of bacteria in mouth could distinguish between ethnicities or even individuals Microbiome transplant could be helpful for plants too (paper)

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268. BacterioFiles Micro Edition 150 - Morels Make Mycelial Motorways
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Description:

This episode: Bacteria use fungal filaments like highways to swim through soil!

Download Episode (7.7 MB, 8.3 minutes)

Show notes:
Journal Paper

Other interesting stories:

Fecal transplants to treat infection could be given in pill form Deep-sea microbes feed crabs Combining photosynthesis and microbial fuel cells Your microbes could originate from the womb Virus combined with drug could treat cancer effectively

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269. BacterioFiles Micro Edition 149 - Psychrobacter Survives Siberian Schisms
http://www.microbeworld.org/po... download (audio/mpeg, 9.12Mb)

Description:

This episode: Cold-loving bacteria can repair surprising amounts of DNA damage even sub-zero temperatures!

Download Episode (9.1 MB, 9.9 minutes)

Show notes:
News item 1/News item 2/Journal Paper

Other interesting stories:

Bacteria can be made to do cool things Figuring out how fecal transplants help restore gut microbiome balance Amazing and important microscopic images Single-celled algae help researchers understand the brain Some bacteria help crops grow better in salty soil

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270. BacterioFiles Micro Edition 148 - Engineered Escherichia Enzyme Enhances Environmentalism
http://www.microbeworld.org/po... download (audio/mpeg, 7.39Mb)

Description:

This episode: Engineered bacteria could help capture CO2 and convert it into a solid form for storage!

Download Episode (7.3 MB, 8 minutes)

Show notes:
Journal Paper

Other interesting stories:

Even some adults could benefit from rural microbes -20ºC Antarctic microbes exchange genetic material relatively frequently Revamping glycolysis for biofuels so less carbon is lost as CO2 Engineered bacteria could help clean up water and soil Bacterial battery could recover energy from marine dead zones (paper)

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271. BacterioFiles Micro Edition 147 - Clostridium Conquers Colleagues
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Description:

This episode: Non-pathogenic Clostridium difficile strains can protect hamsters against their disease-causing bacterial siblings!

Download Episode (7 MB, 7.5 minutes)

Show notes:
News item 1/News item 2/Journal Paper

Other interesting stories:

Forensics could observe state of bacterial activity to determine when someone died Microbes could be a partial living history of other forms of life Viruses enter and affect mammalian cells but don't cause harm Step toward helping more plants cooperate with nitrogen-fixing bacteria Engineering E. coli to produce straight-up gasoline

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272. BacterioFiles Micro Edition 146 - Engineered Escherichia Eliminates Enemies
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Description:

This episode: Scientists engineered E. coli to seek and destroy pathogens!

Download Episode (10 MB, 11 minutes)

Show notes:
News item 1/News item 2/Journal Paper

Other interesting stories:

Soil microbes are very important for plants Bacteria tolerate fluoride by having really weird transporter proteins Bacteria-produced silk could shield medicinal proteins until they're needed Researchers discover very small marine microbe Pest insects team up with bacteria to avoid plant defenses (paper)

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273. BacterioFiles Micro Edition 145 - Clostridium Converts Cortisol
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Description:

This episode: Gut bacteria may convert cortisol into important human hormones!

Download Episode (6 MB, 6.5 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Frozen microbes could possibly survive a fall from outer space to Earth Infecting fungus creates zombie ants Importance of bacteria recognized even 120 years ago Using microbes to generate electricity by breaking down wastewater Newly discovered eukaryotic microbe helps show what doesn't make multicellular organisms unique

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274. BacterioFiles Micro Edition 144 - Copper Chelator Calms Quicksilver
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Description:

This episode: Bacteria could reduce mercury's toxicity in their environment!

Download Episode (6.5 MB, 7 minutes)

Show notes:
Journal Paper

Other interesting stories:

Symbiotic bacteria help plant pests trick their host plants Finding ancient organisms in Antarctic ice Immune system regulates skin microbe communities (paper) Panda gut microbes could be pretty good for cellulose biofuel production Cold doesn't seem to prevent microbes from eating polluting hydrocarbons

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275. BacterioFiles Micro Edition 143 - Parasites Prevent Paired Pestilences
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Description:

This episode: Gut parasites may fight each other to infect!

Download Episode (9.7 MB, 10.6 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Fungus-bacterium community does well producing biofuel from cellulose (paper) Improving microbes' ability to generate electricity Cyanobacterium can produce 5 different biofuels Sequencing-based community sampling may overestimate microbial diversity (paper) Bacteria could help harvest biofuel algae by clumping them together (paper)

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276. BacterioFiles Micro Edition 142 - Diversity Determines Dimensions
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Description:

This episode: Higher gut bacterial diversity is correlated with lower obesity and related problems!

Download Episode (6.1 MB, 6.6 minutes)

Show notes:
News item 1/News item 2/Journal Paper

Other interesting stories:

Gut bacteria may influence weight gain when quitting smoking Probiotic can inhibit pathogen motility (paper) Microbes deep under sea floor divide every 10,000 years Searching sea microbes for promising new chemicals Stick bug gut bacteria seem to make good antibacterial compounds

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277. BacterioFiles Micro Edition 141 - Sulfuric Slurry Cells Store Cerium
http://www.microbeworld.org/po... download (audio/mpeg, 6.23Mb)

Description:

This episode: Bacteria in a volcanic mudpot require rare earth elements to grow!

Download Episode (6.2 MB, 6.75 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Scientists may develop a bacterial toxin that kills mosquitoes Fungus-like bacteria could help reduce potato disease (paper) Microbiology report makes suggestions for feeding the world Bacteria from termite gut could help produce biofuels Microbes that are important for creating delicious fermented foods

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278. BacterioFiles Micro Edition 140 - Transposon Tunes Timely Transcription
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Description:

This episode: "Selfish" jumping gene is actually helpful for its host plant's resistance to disease!

Download Episode (5.56 MB, 6 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Gut microbes may make difference in autoimmunity between males and females Helpful fungal symbiont prevents growth of toxin-producing fungi in potatoes (paper) Modified soil bacteria could treat parasite infections (paper) Mothers transfer good bacteria to babies through breastmilk Pollution-degrading bacteria are more common than was known

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279. BacterioFiles Micro Edition 139 - Tamed Trespassers Treat Tumors
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Description:

This episode: Inactivated virus particles may treat cancer or even vaccinate against it!

Download Episode (5.8 MB, 6.25 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Students try to make perpetual lightbulb out of glowing bacteria Nematode carries around bacterial coat that it can use as a snack Predatory bacteria could be used to treat drug-resistant pathogens Fungus and bacterium work together to make biofuels out of plant waste Microbes may be able to survive down to -20C, but no lower

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280. BacterioFiles Micro Edition 138 - Slime Sustains Sidekick Pseudomonas
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Description:

This episode: Slime mold cells carry bacteria with them, some for food and some for chemical warfare!

Download Episode (6.4 MB, 7 minutes)

Show notes:
News item 1/News item 2/Journal Paper

Other interesting stories:

Vaccines using Salmonella could now pass through the stomach, becoming more effective C-section might not be as good for infants' gut communities Useful RNA-based technique for modifying biotech cells' metabolism Protein allows gut cells to tolerate good bacteria and depend on them for protection from pathogens Bacteria may be better way to clean chemicals from water supply

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281. BacterioFiles Micro Edition 137 - Germ's Jammer Jumpstarts Genes
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Description:

This episode: Pathogen's CRISPR-Cas system (for defense against viruses) can be modified to change gene expression in mammals!

Download Episode (6.3 MB, 6.9 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

New potential antibiotic discovered in marine bacteria Some bacteria make pretty patterns Bacteria manipulate plants; same mechanism could help treat genetic diseases Microbes could convert CO2 directly to biofuels Color-changing Antarctic heat-loving bacteria transform gold ions into useful nanoparticles (paper)

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282. BacterioFiles Micro Edition 136 - Swarmers Send Secret Signals
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Description:

This episode: Swarming predatory bacteria may be communicating through tubes!

Download Episode (6.3 MB, 6.9 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Algae intended for biofuels turn out to be very good in desserts Man found whose own gut seems to brew alcohol Viruses useful for controlling crop pests Deep sea glowing of bacteria changes based on surface conditions Bacterial investment strategies could teach some things to human investors

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283. BacterioFiles Micro Edition 135 - Prodigious Pandora Particles Perceived
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Description:

This episode: New giant virus discovered, with a genome larger than that of some eukaryotes!

Download Episode (7.5 MB, 8.1 minutes)

Show notes:
News item 1/News item 2/News item 3/News item 4/Journal Paper

Other interesting stories:

Using bacteria as factories to produce drugs, originally found in plants, cheaply Ocean bacteria can "see" by sensing the color of light and adjusting their behavior Though many gut viruses are stable, some change rapidly over time Reducing need for fertilizer by creating artificial plant-bacteria symbioses Fungal symbionts help plants tolerate heat and drought (paper)

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284. BacterioFiles Micro Edition 134 - Duodenum Dweller Degrades Digoxin
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Description:

This episode: Bacteria in the gut can affect dosaging of medications!

Download Episode (7.1 MB, 7.75 minutes)

Show notes:
News item 1/News item 2/Journal Paper

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285. BacterioFiles Micro Edition 133 - Microbe Manacles Metal, Muzzles Microbe
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Description:

This episode: A strain of E. coli helps reduce severity of Salmonella infection by competing with it for iron in the gut!

Download Episode (7.6 MB, 8.3 minutes)

Show notes:
News item/Journal Paper

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286. BacterioFiles Micro Edition 132 - Microbes Modify Mitochrondrial Material
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Description:

This episode: Some bacterial DNA sequence seems to integrate into human cells, especially in cancerous tissue!

Download Episode (11.3 MB, 12.3 minutes)

Show notes:
News item/Journal Paper/Review of animal-bacterial lateral gene transfer

Other interesting stories:

Bacteria are important for health of corals Desert bacterium makes more and better bioplastic Fungi that can survive at negative temperatures, and how (paper) Crop rotation helps maintain diversity of soil community Gut microbes can contribute to speciation, in insects

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287. BacterioFiles Micro Edition 131 - Stacking Sucker Symbionts
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Description:

This episode: Some insects have bacterial symbionts with super-small genomes inside their cells, and some of these symbionts have their own internal bacterial symbionts!

Download Episode (6.7 MB, 7.3 minutes)

Show notes:
News item 1/News item 2/News item 3/Journal Paper

Other interesting stories:

Making art with plates of glowing bacteria Predatory bacteria seem to be helpful for treating eye infections Bacteria floating all around the earth, could help with climate Making bioplastic polymers is important even in bacterium-insect symbioses (paper) New strains of bacteria could make better biofuels

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288. BacterioFiles Micro Edition 130 - Bacteriophages Bind Boogers
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Description:

This episode: Phages hang out in mucus to ambush bacteria!

Download Episode (6.4 MB, 7 minutes)

Show notes:
News item 1/News item 2/Journal Paper

Other interesting stories:

Green algae eat bacteria, suggesting route for origin of eukaryotes Bacteria could help clean up estrogen contaminants in drinking water Bacteria help clean up poop-filled cave Microbes could help with making Mars habitable Virus gene therapy helps the blind see

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289. BacterioFiles Micro Edition 129 - Lentivirus Limits Leukodystrophy
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Description:

This episode: Virus acts as vector to cure deadly genetic disorder!

Download Episode (5.4 MB, 5.8 minutes)

Show notes:
Journal Paper

Other interesting stories:

Lentiviral Hematopoietic Stem Cell Gene Therapy in Patients with Wiskott-Aldrich Syndrome (paper) Bacterial proteins filter and recycle antibiotics in streams Survey of fungi living on our skin Dogs have a big effect on bacteria found in the home Bacteria found that break the coldest-living-organism record

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290. BacterioFiles Micro Edition 128 - Algae Aggregate Ammonium Altruistically
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Description:

This episode: Algal symbionts store nutrients for corals!

Download Episode (3.9 MB, 4 minutes)

Show notes:
News item 1/News item 2/Journal Paper

Other interesting stories:

Certain gut bacteria could help reduce obesity, in mice at least Michael Pollan: "Some of My Best Friends Are Germs" Interview with Pollan Bacterial travel paths make pretty good art Bacteria can use hydrogen gas to produce electricity, a real microbial fuel cell Gut bacteria could protect against pathogenic E. coli

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291. BacterioFiles Micro Edition 127 - Plant Partners Prompt Pest Preparation
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Description:

This episode: Fungi transmit warning signals between plants!

Download Episode (7.4 MB, 8 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Parents sucking on infants' pacifiers may help provide good bacteria Using ancient bacterial samples to create record of local supernovas Phages could help prevent medical implant contamination Bacteria that colonize infants' gut can influence their growth Using bacteria in mosquitoes to stop malaria

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292. BacterioFiles Micro Edition 126 - Tamed Trespasser Tramples Tumors
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Description:

This episode: A harmless pathogen strain combined with radioactivity can fight pancreatic cancer!

Download Episode (5.3 MB, 5.8 minutes)

Show notes:
News item 1/News item 2/News item 3/Journal Paper
Video of Listeria swimming around inside cells

Other interesting stories:

Finding new electricity-generating species of bacteria (paper) Trials starting to heal people's hearts using modified virus Soil bacteria could form barrier to prevent rice from taking up arsenic Strange cobwebby bacteria are growing in spent nuclear fuel cooling tanks Bacteria are living high up in hurricanes

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293. BacterioFiles Micro Edition 125 - Phototroph Fusion Fights Fevers
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Description:

This episode: Green algae could help create new cheaper, more stable vaccines for developing countries!

Download Episode (4.5 MB, 5 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Some dirt in the diet could be very healthy Gut bacteria seem to kill Salmonella directly Bacteria may influence biological clocks, at least in squid Protein in mountain bacteria similar enough to brain protein to allow comparison Soil bacterium could reduce contamination of crops with deadly fungal toxin (paper)

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294. BacterioFiles Special Edition - ASM2013 General Meeting Day 4
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Description:

Here's my summary of the fourth and final day of ASM2013, with a special surprise guest appearance at the end!

Download Episode (5.5 MB, 6 minutes)

Session 1: Synthetic Genomics to Create a Minimal Bacterial Cell and Some Other Neat Stuff
Presented by John I. Glass
He talked about the cell with the synthetic genome (full episode 13), and about how important it is to determine what is the minimal amount of genome a cell needs to grow--knowing that, you can start there and build almost anything you want.
He also talked about a new method of producing new flu strains for vaccine production using synthetic nucleic acids, which could greatly shorten the time it takes to get a new vaccine going to counter a pandemic.

Session 2: C. difficile vs. the Microbiota: The Enemy of My Enemy is My Friend
Presented by Shonna McBride
When a probiotic (Lactococcus lactis) was grown with C. difficile, the latter was killed.

Session 3: An Intriguing Bacterial Symbiont in the Nucleus of Amoebae
Presented by Frederik Schulz
Interactions between amoebae and bacteria are interesting and also relevant to our health, considering the similarities between amoebae and cells of our immune system. This interaction is particularly interesting: bacteria living inside the nucleus.

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295. BacterioFiles Special Edition - ASM2013 General Meeting Day 3
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Description:

Here's my summary of the third day of ASM2013, wherein I met with neat people and ideas.

Download Episode (4.3 MB, 4.6 minutes)

Session 1: Microbe-Microbe Interactions - Cell Contact-Dependent Outer Membrane Exchange in Myxobacteria
Presented by Dan Wall
Myxobacteria are super cool, a fascinating example of complex cooperative behavior in relatively simple single-celled organisms. They swarm around eating other bacteria until they get low on food, at which point they gather together to form reproductive structures called fruiting bodies to spread to new environments.
As part of the mechanism they use to coordinate their activity and distinguish between friends and foes, they seem to exchange components of their outer membrane, but only with closely-related strains.

Poster: 1485 - Understanding the Syntrophic Metabolism of a Bacterial Co-culture for Hydrogen Production
(Combination of Clostridium cellulolyticum and Rhodopseudomonas palustris to convert cellulosic plant material into hydrogen)
Y. Jiao, A. Navid, B. Stewart, J. McKinlay, M. Thelen, J. Pett-Ridge

Poster: 1702 - Non-Photosynthetic, Deep-Branching Cyanobacteria of the Human Gut and Subsurface Permit Inference of the Cyanobacterial Ancestor
S.C. Di Rienzi, I. Sharon, K.C. Wrighton, O. Koren, L.A. Hug, B.C. Thomas, J.K. Goodrich, J.T. Bell, T.D. Spector, J.F. Banfield, R.E. Ley

They started out talking about scientific misconduct with Ferric Fang, then with Andrew Camilli about the virus with a CRISPR system (listen at about 1 hour 2 min in to hear my question!), and also with Suzanne Fleiszig and Michelle Swanson about a gruesome-sounding eye infection and defenses against intracellular bacteria. You should give it a listen (or watch)!

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296. BacterioFiles Special Edition - ASM2013 General Meeting Day 2
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Description:

Here's my summary of the second day of ASM2013, an exciting day full of science.

Download Episode (7.36 MB, 8 minutes)

Session 1: Pumping at the Microbial Well
Section 1: Advanced Plant to Advanced Fuel
Presented by Jay D. Keasling,
In order to produce long-chain carbon compounds for diesel and jet fuels, it is possible to engineer bacteria like E. coli to produce them the way they produce long fatty acids for their membranes, but in a better form for extraction. Also, plants produce many terpene compounds for defense, such as bisabolene, that can also be good for fuel, and bacteria can be engineered to produce these too, but it can be tricky due to these compounds' toxicity.
Paper on good efflux pumps for biofuel production: Dunlop et al, 2011, Mol. Sys. Biol. 7:487 doi: 10.1038/msb.2011.21

Section 2: Is There a Path to Cellulosic Biofuels?
Presented by Thomas W. Jeffries
His main point was that the use of fossil fuels should be a transitional state between the pre-industrial era and a sustainable system of renewable energy. Fossil fuels should be an investment in the future, not something we should build our whole infrastructure around. They are going to run out someday, after all.

Poster: 280 - Comparisons of CRISPR Content Between Saliva and Skin: Viral Exposures May Not Be Body Site Specific
R. Robles-Sikisaka, M. Naidu, M. Ly, J. Saizman, S.R. Abeles, T. Boehm, D.T. Pride

Session 2: Uncovering the Function of Unknown Proteins
Section 1: Evolution and the Proteome: Insights into Protein Function from Deeply Conserved Gene Modules
Presented by Edward Marcotte
How should one go about figuring out the function of unknown proteins? Possibly by comparing homologs in other, even distantly related organisms. Even homologous genes in yeast and humans can have similar functions. And of the ~500 essential proteins in yeast that have human homologues, 60% of them can be replaced with the human version and the yeast will still be viable.

Section 2: Small Proteins Can No Longer Be Ignored
Presented by Gisela Storz
Her group has discovered some bacterial proteins smaller than 50 amino acids long, that seem to be related to metal metabolism.

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297. BacterioFiles Special Edition - ASM2013 General Meeting Day 1
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Description:

I went to the General Meeting of the American Society for Microbiology, in Denver, Colorado, and I wanted to share some of the fascinating science that I experienced. So here's my summary of the first day!

Download Episode (6.45 MB, 7 minutes)

Section 1: I missed it because Denver is confusing and it took me so long to find parking. Apparently it was interesting, though, discussing how a certain bacterium, Caulobacter crescentus, divides into two daughter cells, one that holds onto a surface and the other that swims away.

Section 2: The Killers, the Cures, and the Limits of Life: Frontiers of Science in the Unseen World
Presented by Nathan D. Wolfe
I missed some of this section, but what I heard was interesting, about how endogenous retroviruses may have made mammalian development possible, and how significant portions of the microbial world may still be unknown.

Section 3: Engineering by Evolution
Presented by Frances Arnold
This was quite interesting. As an engineer, Dr. Arnold is interested in making cells and their enzymes do stuff, so she works on improving their abilities. There is tremendous diversity of amino acid sequences (i.e. proteins) in nature, but it represents only a small amount of the possible combinations of amino acids. Most such combinations are useless as enzymes, but a few are even more effective than anything (yet found) in nature. Dr. Arnold discussed how to find these combinations.
Here is the paper published about the heat-stable cellulases that I discussed: Wu and Arnold, 2013, Biotechnol. Bioeng. 110:1874 doi: 10.1002/bit.24864.

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298. BacterioFiles Micro Edition 124 - Chlamydomonas Constructs Coming Coal
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Description:

This episode: Green algae's hydrogen production is analyzed and improved!

Download Episode (3.8 MB, 4.1 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Scientists take protein from flesh-eating bacteria and make useful adhesive Fungus from horse gut could be good for breaking down plant material for biofuels Dogs are an important influence on our microbiota Bacterial fossils could contain evidence of an ancient supernova E. coli modified to produce imitation petroleum

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299. BacterioFiles Micro Edition 123 - Proteobacteria Protonate Poison
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Description:

This episode: Soil microbe has a good enzyme for degrading cyanide pollution!

Download Episode (4.2 MB, 4.5 minutes)

Show notes:
Journal Paper

Other interesting stories:

Company developing virus to treat cancer Prions help fungi regulate their multicellularity History and status of phage therapy Protists from termite gut named after elder gods Screening many chemicals, scientists found some that increase algal oil production

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300. BacterioFiles Micro Edition 122 - Coliforms Consume Caffeine Compulsively
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Description:

This episode: Scientists engineer E. coli to be addicted to caffeine!

Download Episode (4.3 MB, 4.75 minutes)

Show notes:
News Item 1/News Item 2/Journal Paper

Other interesting stories:

Figuring out how microbes survive in salty freezing lakes Bacterial wires conduct electricity because of certain amino acids Making cyanobacteria produce butanol biofuel Byproduct of algal biofuel production could be made into biodegradable plastic Phage therapy looking more promising

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301. BacterioFiles Micro Edition 121 - Horizontal Hacks Help Harsh Habitation
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Description:

This episode: Alga adapts to hot, toxic environments by copying prokaryote genes!

Download Episode (3.4 MB, 3.75 minutes)

Show notes:
News Item 1/News Item 2/Journal Paper

Other interesting stories:

Same species of bacteria that causes acne might also protect against it Bacteria in sourdough bread inhibit mold growth Navy develops device to treat wastewater and produce electricity simultaneously Marine bacteria could make useful new antibiotics Fungi seem to protect plant foliage from leaf-cutter ants

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302. BacterioFiles Micro Edition 120 - Particles Pirate Prokaryote Protection
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Description:

This episode: A virus has borrowed a bacterium's defenses to infect better!

Download Episode (5 MB, 5.5 minutes)

Show notes:
News Item 1/News Item 2/Journal Paper

Other interesting stories:

Signals from neighbors tell bacteria to induce phage resistance Man-made wetland filled with bacteria could clean waste pharmaceuticals from water Bacteria seem to have specific relationships with apple tree flowers Reintroducing healthy gut community clears out drug-resistant pathogens in mice Weaving bacteriophages into packaging to help food safety (paper)

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303. BacterioFiles Micro Edition 119 - Bacteria Bypass Blood-Brain Barrier?
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Description:

This episode: Our brain might be home to helpful bacteria!

Download Episode (3.5 MB, 3.75 minutes)

Show notes:
News Item/Journal Paper

Other interesting stories:

Antarctic bacteria cling to ice crystals Viruses could actually be helpful for plants Probiotic bacteria seemed to help male mice's bone density Marine microbe's enzyme could break down sinusitis biofilms Yeast engineered to produce butanol in its mitochondria

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304. BacterioFiles Micro Edition 118 - Fungi Found in Seafloor Sediments
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Description:

This episode: Fungi are found living deep under the sea!

Download Episode (3.15 MB, 3.5 minutes)

Show notes:
News Item/Journal Paper

Other interesting stories:

Scientists test artificial feces transplants to treat C. difficile infections Exposure to bacteria from adult male mice seems to protect young female mice against type 1 diabetes Bacteria that take electrons from iron can take them directly from electricity too and fix carbon dioxide Sea creatures often team up with bacteria that produce potential new drugs Engineered herpes virus could inhibit metastasis of certain cancers

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305. BacterioFiles Micro Edition 117 - Helicobacter Helps or Hurts Health?
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Description:

This episode: Helicobacter pylori seems not to be more harmful than helpful!

Download Episode (3.9 MB, 4.25 minutes)

Show notes:
News Item/Journal Paper

Other interesting stories:

Our guts and plants' roots may be similar in some ways in terms of microbes (paper) Bacteria found that maybe could grow in Martian poles Mother's milk may be important source of microbes for infant Microbes in clouds affect their chemical composition (paper) Scientists take samples of microbes in hurricanes

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306. BacterioFiles Micro Edition 116 - Colonizer Counterattacks cholerae
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Description:

This episode: Some bacteria respond to attacks from other bacteria with their own deadly strike!

Download Episode (4.1 MB, 4.5 minutes)

Show notes:
News Item/Journal Paper

Other interesting stories:

Gut community may be associated with cardiovascular health Using a virus to build the heart a new biological pacemaker Bacteria change their genetic code in presence of unusual carbon source (paper) Cholesterol metabolism seems to influence gut microbes (in hamsters) Gut bacteria could affect appetite

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307. BacterioFiles Micro Edition 115 - Nets Nab Nematodes
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Description:

This episode: Fungi sense worms coming and trap them!

Download Episode (2.8 MB, 3 minutes)

Show notes:
News Item/Journal Paper

Other interesting stories:

Probiotics could be helpful for fish too 200-million-year-old cilitate preserved in leech cocoon Thin atmospheres might not be a problem for bacteria Some bacteria don't just resist antibiotics, they eat them (which might be a good thing) Engineering algae to make complex anti-cancer drug cheaply

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308. BacterioFiles Micro Edition 114 - Popping Pathogen Provides Plasmid Prophylactic
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Description:

This episode: Salmonella strain engineered to induce our cells to immunize us against diseases!

Download Episode (4.5 MB, 5 minutes)

Show notes:
Journal Paper

Other interesting stories:

Microbes found thriving in salty, noxious, sub-zero oxygen-free buried Antarctic lake Using a dog virus to make vaccines for human diseases Scientists produce electricity from plant-microbe team Newly discovered bacterium could help break down more of plant wastes for biofuels Researchers find bacteria to help degrade soil contaminants

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309. BacterioFiles Micro Edition 113 - Bdelloids Derive Different Domains' DNA
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Description:

This episode: Bdelloid rotifers borrow genetic material from all over the place!

Download Episode (4.5 MB, 4.8 minutes)

Show notes:
News item 1/News item 2/Journal Paper

Other interesting stories:

Model suggests we might actively enable growth of beneficial gut microbes Predatory bacteria can even feed on their prey's storage polymers (paper) Plants' symbiotic bacteria can control their production of insect toxins and only produce when needed (paper) More bacteria than thought can get rid of potent greenhouse gas nitrous oxide Marine algae engineered to produce biofuels like fresh-water algae

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310. BacterioFiles Micro Edition 112 - Belly Button Bacteria
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Description:

This episode: Discovering what is living in our navels!

Download Episode (3.4 MB, 3.75 minutes)

Show notes:
News item 1/News item 2/Journal Paper/Project website

Other interesting stories:

Video-article shows how to purify magnetic bacteria King Henry VIII's warship has novel bacteria growing in it (paper) Acid-loving bacteria can dissolve and extract metals for recycling In addition to photosynthesis, algae can digest cellulose for carbon Insect-infecting fungus may help control bed bugs

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311. BacterioFiles Micro Edition 111 - Custom Community Controls Clostridium
http://www.microbeworld.org/po... download (audio/mpeg, 3.50Mb)

Description:

This episode: Figuring out which bacteria help fecal transplants work so well against C. difficile!

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Show notes:
News item 1/News item 2/Journal Paper

Other interesting stories:

City considering bacteria for cleaning up river Probiotics expressing human protein reduce gut inflammation Pressure-cooking algae into crude oil Man's hand wound leads to hints about how bacteria came to live in insects Wormy parasites help treat gut inflammation (in monkeys at least)

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312. BacterioFiles Micro Edition 110 - Plant Pathogens Pair Perfectly
http://www.microbeworld.org/po... download (audio/mpeg, 2.81Mb)

Description:

This episode: Plant viruses work together to infect better!

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Show notes:
News item/Journal Paper

Other interesting stories:

Bacteria could help improve truffle farming Figuring out how bacteria conduct electricity in seafloor sediment Bacterial photography Plants team up with bacteria in drought conditions Bacteria could help make self-healing concrete

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313. BacterioFiles Micro Edition 109 - Labeling Lung Lurkers
http://www.microbeworld.org/in... download (audio/mpeg, 3.36Mb)

Description:

This episode: Identifying the microbial communities of the lungs!

Download Episode (3.35 MB, 3.6 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Commensal bacteria seem to influence animal behavior in some ways Directed evolution for biofuel production from bio-oil Prebiotics could help regrow removed intestines Cave bacteria could contain useful information, including antibiotics Fungus outcompetes aflatoxin fungi in crops, now applied using bioplastic

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314. BacterioFiles Micro Edition 108 - Firing Phages to Fight faecalis
http://www.microbeworld.org/in... download (audio/mpeg, 4.46Mb)

Description:

This episode: Gut bacteria use phages to beat their competition!

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Show notes:
News item/Journal Paper

Other interesting stories:

Cooperative predatory bacteria spread out in waves Using bacteria to clean up nicotine contamination (paper) Metal-tolerant bacteria can produce pure gold from Au salt Virus could treat diabetes by inducing weight gain Making biofuel-producing bacteria resistant to predation (paper)

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315. BacterioFiles Micro Edition 107 - Lipases Liberate Light-Linked Lipids
http://www.microbeworld.org/in... download (audio/mpeg, 3.42Mb)

Description:

This episode: Scientists engineer cyanobacteria to release biofuels at high temperatures!

Download Episode (3.4 MB, 3.75 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Microbes could even help protect us from heavy metals directly Bacteria help turn rocks into soil New virus discovered that is related to major pathogens but doesn't infect humans Viruses could help treat drinking water Using music to make sense of microbiological data

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316. BacterioFiles Micro Edition 106 - Bacteriophages Bust Blackheads
http://www.microbeworld.org/in... download (audio/mpeg, 2.54Mb)

Description:

This episode: Scientists find that phages might be good for treating acne!

Download Episode (2.5 MB, 2.75 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Fungi could help make Stradivarius-quality violins Rabbit virus could kill cancer cells in dogs Potential biofuel microbe can survive in pretreatment conditions Microbes make for really good food MSU lab's evolving E. coli

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317. BacterioFiles Micro Edition 105 - Pythium Provides Pollutant Pipelines
http://www.microbeworld.org/in... download (audio/mpeg, 3.35Mb)

Description:

This episode: Fungi and such can transport pollutants in soil to bacteria for degradation!

Download Episode (3.3 MB, 3.7 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Even HIV can be made to help fight cancer Bacteria are important for animal communication Phages could be used to stop bacteria from killing corals Cooking oil waste could be good food source for production of bioplastics Waste from biofuel production could be used to generate electricity

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318. BacterioFiles Micro Edition 104 - Algae Actualize Active Antibodies
http://www.microbeworld.org/in... download (audio/mpeg, 3.82Mb)

Description:

This episode: Engineered diatoms can produce functional antibodies!

Download Episode (3.8 MB, 4.2 minutes)

Show notes:
Journal Paper

Other interesting stories:

Synthetic virus-like particles can attack tumors Another kind of biofuel from a good bioplastics microbe Feeding your bacteria is important too Searching forests for wood-eating fungi (paper) Plant-friendly soil bacteria signal plants to shut out pathogens

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319. BacterioFiles Micro Edition 103 - Prokaryotes Palliate Plants' Pollution Pressures
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Description:

This episode: Soil bacteria can help plants adapt to changing climate conditions!

Download Episode (4 MB, 4.3 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Producing electricity from sewage treatment Gut bacteria very important for infants Skin bacteria are helpful Bacteria induce single-celled organism to form multi-celled colony Using bacteria to fight invasion of zebra mussels

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320. BacterioFiles Micro Edition 102 - Pathogen Processes Polyp-Popping Prodrug
http://www.microbeworld.org/in... download (audio/mpeg, 0.84Mb)

Description:

This episode: Tumor-targeting bacteria selectively activate anti-cancer drug!

Download Episode (1 MB, 3.6 minutes)

Show notes:
Journal Paper

Other interesting stories:

Microbes are important for production of many kinds of food Gut microbe changes that normally seem unhealthy seem beneficial for pregnant women Developing microbes to terraform Mars for colonization Predatory bacteria digest their prey's bioplastic storage polymers (paper) Scientists find abundance of lead-dissolving fungi at old shooting range (paper)

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321. BacterioFiles Micro Edition 101 - Prokaryotes Pressurize Platforms
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Description:

This episode: Bacteria produce gas that can regulate the depth of underwater sensor devices!

Download Episode (4 MB, 3.8 minutes)

Show notes:
Journal Paper

Other interesting stories:

Termite gut bacteria are a good source of biofuel technology Sadly, arsenic bacterium GFAJ-1 appears to be arsenate-resistant but phosphate-dependent (papers) Figuring out how bacteria degrade carcinogenic benzene Beneficial bacteria are important for the skin as well as the gut Microbes could use electricity to produce natural gas

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322. BacterioFiles Micro Edition 100 - Protozoa Prevent Pathogen Proliferation
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Description:

This episode: Amoebae snag pathogenic bacteria in soil and carry them around as a portable snack!

Download Episode (3.9 MB, 4.25 minutes)

Show notes:
Journal Paper /Video

Other interesting stories:

Bacteria could be used to produce pleasing scents Plant-dwelling bacteria with particular enzyme could help cut flowers last longer (paper) Fragile bacterial crusts are important for desert ecosystems Bacteria could protect frogs from deadly fungus plague How bacteria help animals eat grass

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323. BacterioFiles Micro Edition 99 - Protecting Pathogen Proteins Produces Potential Preventives
http://www.microbeworld.org/in... download (audio/mpeg, 5.28Mb)

Description:

This episode: Using a bacterial trick to protect pathogen proteins from radiation could help produce useful vaccines!

Download Episode (5.3 MB, 5.75 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Seeing how modern bacteria fare with a 500-million-year-old gene replacement Microbes are domesticated too, such as this fermentative fungus Probiotics can help with upper respiratory tract infections (Review) In elderly, living conditions can affect the health of gut microbial communities Fungus can help clean up contaminated water in mines

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324. BacterioFiles Micro Edition 98 - Modified Microbes Make Mosquito Midguts Murder Malaria
http://www.microbeworld.org/in... download (audio/mpeg, 4.15Mb)

Description:

This episode: Scientists engineer mosquito gut bacteria to fight malaria!

Download Episode (4.15 MB, 4.5 minutes)

Show notes:
News item 1/News item 2/Journal Paper

Other interesting stories:

Dog microbes could protect kids against asthma induced by a virus Enzyme from marine microbe could clean teeth better than toothpaste Underground bacteria could be helpful or harmful for long-term radioactive waste storage New algae strain produces unusual amounts of oil for biofuels Changes in gut microbes could be part of why gastric bypass helps weightloss

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325. BacterioFiles Micro Edition 97 - Prokaryote Partners Produce Power
http://www.microbeworld.org/in... download (audio/mpeg, 4.04Mb)

Description:

This episode: Scientists match up bacteria to produce extra fuel from plant waste!

Download Episode (4 MB, 4.5 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Using bacteria to reclaim a garbage dump from contaminants Researcher finds mine microbes using radioactivity for energy Fiber seems to be important for health due to bacteria Interesting microbes found around mummies on mountaintop Figuring out how heat-loving microbes break down cellulose

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326. BacterioFiles Micro Edition 96 - Mouse Microbes Match Mice
http://www.microbeworld.org/in... download (audio/mpeg, 3.94Mb)

Description:

This episode: Each kind of animal needs its own specific microbes!

Download Episode (4 MB, 4.25 minutes)

Show notes:
News item 1/News item 2/Journal Paper

Other interesting stories:

Viruses could help protect honeybees from bacterial pathogen Marine bacteria could be useful for producing gold nanoparticles NY Times on how exposure to bacteria is important Cold-loving bacteria help make better sanitation possible for more in India Lichens on ISS survive full solar radiation, cold and heat

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327. BacterioFiles Micro Edition 95 - Plants' Pathogenic Partners
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Description:

This episode: Fungi infect insects and share the nutrients with plants!

Download Episode (2.7 MB, 3 minutes)

Show notes:
Journal Paper

Other interesting stories:

Searching for exotic microbes to convert cellulose to biofuel Microbes make soil-enriching limestone out of CO2 using tree's technique Gut bacterium actually seems to produce a neurotransmitter Adding extra carbon causes algae to produce more oil Virus can target cancer effectively by hiding from immune system on blood cells

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328. BacterioFiles Micro Edition 94 - Commensals Calibrate Counterattack
http://www.microbeworld.org/in... download (audio/mpeg, 2.18Mb)

Description:

This episode: Gut bacteria might actually help the immune system fight off viruses!

Download Episode (2.2 MB, 2.3 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Algae are growing well even under Arctic ice Microbes discovered in super-harsh desert volcano conditions Childhood bacterial exposure may be essential for adulthood good moods Progress made on a census of all human-associated microbes Modified gut bacteria seem to prevent colon cancer (in mice)

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329. BacterioFiles Micro Edition 93 - Virus Visualizes Neural Networks
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Description:

This episode: Scientists use a modified rabies virus to map brain connections!

Download Episode (3.5 MB, 4 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Red wine seems to have a good effect on gut bacteria Bacteria found in frozen sulphurous fjord might be similar to life on Europa Using bacteria to make images of the universe Bacteria use soil minerals to exchange electrons Slime molds help with computational geometry

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330. BacterioFiles Micro Edition 92 - Microbes Make Miniature Magnets
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Description:

This episode: Bacterial enzymes are good for making nanomagnets for computers!

Download Episode (2.6 MB, 2.75 minutes)

Show notes:
News item 1/News item 2/Journal Paper

Other interesting stories:

Tobacco virus may be helpful for prevention of Parkinson's Using microbes to sense toxic compounds Gut bacterial exposure early in life affects immunity Robot synchrony technique inspired by bacterial signalling Bacterial diets are diverse and interesting

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331. BacterioFiles Micro Edition 91 - Forager-Feared Fungus Foiled
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Description:

This episode: Ant-zombie fungal parasite is counter-parasitized by another fungus!

Download Episode (2.9 MB, 3.2 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Discovery of bacteria that can tolerate chemicals that make plant waste digestion easier for them Associating gut bacteria in kids with their weight Bacteria tend to evolve to use different resources rather than competing with each other Algae could be used to produce anti-malaria vaccine Pressing a sheet of viruses could generate electricity

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332. BacterioFiles Micro Edition 90 - Prokaryote Parasites Deal Double Dose Death
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Description:

This episode: Discovery of a bacterium infected by two distinct organisms at the same time!

Download Episode (3.5 MB, 3.75 minutes)

Show notes:
Journal Paper

Other interesting stories:

Floating rocks, microbes, and the origin of life Diversity of plants and microbes helps prevent allergies Probiotics help prevent antibiotic-induced diarrhea Wind erosion is problematic both for soil and beneficial microbes Selective nutrition and other strategies could help good bacteria compete with pathogens

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333. BacterioFiles Micro Edition 89 - Counting Cloud Communities
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Description:

This episode: Sampling storm cloud microbial communities with hailstones!

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Show notes:
Journal Paper

Other interesting stories:

Newly discovered bacteria make little balls of minerals inside themselves Scientists using bacteria to fix concrete cracks Breastfeeding seems important for infants' bacterial health Engineered E. coli produce lots of bioplastic (paper) Toxic counterfeit vodka fed to microbes to make electricity

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334. BacterioFiles Micro Edition 88 - Bacteria Block Barnacle Binding
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Description:

This episode: Biofilms help keep seaweed surfaces clear of barnacles!

Download Episode (3 MB, 3.25 minutes)

Show notes:
Journal Paper

Other interesting stories:

Using modified bacteria to capture and remove viruses Bacteria are important for food flavor Prions can actually be helpful to yeast instead of harmful Plants release chemicals to attract helpful bacteria Enzyme from probiotics could help treat inflammatory bowel disease

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335. BacterioFiles Micro Edition 87 - Fermenter Fixes Folate Faults
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Description:

This episode: Probiotics could help prevent folate deficiency!

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Show notes:
Journal Paper

Other interesting stories:

Cyanobacteria could produce table sugar better than plants Temperature-controlled microbial biotech Ocean worm feeds on toxic stuff with bacterial help New system to treat wastewater and produce biofuels Massive amounts of old bacteria are frozen in Antarctic ice

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336. BacterioFiles Micro Edition 86 - Bacteria Boost Beta Business
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Description:

This episode: Engineered bacteria help reverse type 1 diabetes in mice!

Download Episode (3.4 MB, 3.75 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Making more environmentally friendly solar panels with bacteria Multiple bacterial species can make more electricity in fuel cell than just one (paper) Studying the spike viruses use to pierce and infect bacteria Bacteria steadily breaking down the Titanic Potential for using probiotic bacteria to preserve food (paper) Using probiotics to help with heavy metal contamination, in fish at least (paper) Potential of bacteria from Italian hydrothermal vents (paper)

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337. BacterioFiles Micro Edition 85 - Pathogen Partitions Parasitoid Populations
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Description:

This episode: A virus influences the competition between two species of parasitoid wasp!

Download Episode (4 MB, 4.3 minutes)

Show notes:
Example of parasitoid manipulator/News item/Journal Paper

Other interesting stories:

Using bacteria to recapture dwindling phosphorus resources Modifying E. coli to make pharmaceuticals better Using bacteria to make electricity from sewage Bacteria could carry medicine to specific targets in the body Electric-powered bacteria could turn carbon dioxide into fuel Bacteria living in wheat help fight off plant disease Looking into algae for biofuels

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338. BacterioFiles Micro Edition 84 - Latent Loops Limit Lupus
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Description:

This episode: A viral infection in mice seems to protect against lupus!

Download Episode (3.5 MB, 4 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Engineering a new bacterial system for biofuel production Slime mold naturally creates model of Canadian road network Gut bacteria might be connected to allergies Venter promises many biotech advances from custom microbes Sometimes microbes lose a necessary ability because others around them make it unnecessary: evolution of cooperation Using photosynthetic eukaryotic microbes as detection method for cancer Phage therapy to treat serious bacterial infections

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339. BacterioFiles Micro Edition 83 - Annelid Archivory
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Description:

This episode: Discovery of a worm that eats archaea!

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Show notes:
News item/Journal Paper

Other interesting stories:

Virus has potential to treat pancreatic cancer River microbes could produce graphene Diatoms could form biosensor that glows in response to chemicals Creating smaller bacterial genomes for engineering by randomly removing pieces Measuring very slow growth deep in the ocean Characterizing honeybee gut bacteria (paper) Figuring out how exposure to bacteria helps immune system development

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340. BacterioFiles Micro Edition 82 - Scintillating Sea Strain
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Description:

This episode: Scientists describe iridescent sea bacteria!

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Show notes:
Journal Paper/Videos

Other interesting stories:

Appendix seems to help protect good gut bacteria populations Cells move in swarm just by growing and pushing water ahead of them (paper) Making bacteria produce another, better-smelling kind of biofuel Newly-discovered chlorophyll lets bacteria use low-energy light as efficiently as any Bacteria live well underneath glaciers In mice, antibiotic treatment leads to more severe asthma Finding new ways to engineer yeast

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341. BacterioFiles Micro Edition 81 - Agrobacterium Antibodies Attack AIDS
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Description:

This episode: Scientists find a way to possibly make an HIV vaccine using bacteria!

Download Episode (2.8 MB, 3 minutes)

Show notes:
News item/Journal Paper

Other interesting stories:

Bacteria may help to store excess carbon dioxide underground Bacteriophage needles that penetrate bacteria have iron tip Pathogen could be useful, produces very strong glue Yeast made to respond to magnets, useful for biotech Exploring the ocean, microscopically Improving knowledge of an already well-known useful bacterium Cold-loving yeasts: where they are and what they (could) do (paper)

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342. BacterioFiles Micro Edition 80 - Bacterial Breakdown Benefits Bugs
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Description:

This episode: Bacteria help leaf-cutter ants break down their garden fertilizer!

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Show notes:
News item/Journal Paper

Other interesting stories:

Smoking disrupts healthy mouth bacteria, letting pathogens invade Seems like viral infection led to evolution of mammals Finding life under crust of dry desert could help find life on Mars and such Fungi with bacterial genes make antivirals out of crustacean shells Thermophiles may make good biofuel producers Mapping all microbes on Earth Making bacteria do all kinds of things

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343. BacterioFiles Micro Edition 79 - Stratospheric Strain's Super Sparks
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Description:

This episode: Finding stratospheric electricity-producing microbes!

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Show notes:
News item 1/News item 2/Journal Paper

Other interesting stories:

Probiotic bacteria may work partly due to special coating New microbes found in mysterious ocean caves Figuring out how bacteria use stickiest glue Studying microbes under dead seals in Arctic Bacteria and their size - is it ideal? Desert archaea allow themselves to dry out but remain viable (paper) Could use bacteria to treat sleeping sickness

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344. BacterioFiles Micro Edition 78 - Proving Prions Provide Positives
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Description:

This episode: Prions may actually help yeast populations survive!

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Show notes:
News item/Journal Paper

Other interesting stories:

Do microbiota change as species evolve apart? (paper) Viruses pretend to help bacteria but then take over Even extinguished hydrothermal vents have interesting life growing Fecal bacteria transplant seems effective for C. difficile infections Cyanobacteria as art Bacteria could be used to diagnose illness by changing poop color Fungi degrading another kind of long-lasting polymer

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345. BacterioFiles Micro Edition 77 - Bioluminescent Bifidus Binds Bumps
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Description:

This episode: Using glowing bacteria to image tumors in the body!

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Show notes:
News item/Journal Paper

Other interesting stories:

Single cell eats algae and uses their photosynthetic powers Jelly fungus could help clean up heavy metal pollution (paper) Other fungi help clean up lead Bacteria made to produce biofuels from seaweed Update: A failed confirmation of bacteria that use arsenic (micro episode 21) A biodegradable styrofoam replacement made of fungus Diversity of soil microbes could help prevent crop disease (paper)

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346. BacterioFiles Micro Edition 76 - Glacial Growth
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Description:

This episode: Bacteria are active even encased in ice!

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Show notes:
News item/Journal Paper

Other interesting stories:

Aquatic bacteria communicate to organize feeding Using bacteria to prevent plumbing clogs from holiday grease Bacteria could help measure glucose levels for diabetics The ocean environment helped bacteria eat Gulf oil spill faster Figuring out how to use microbes to produce a better biofuel compound Gut microbes are different in people of different weights Algae even grow in water covered with ice

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347. BacterioFiles Micro Edition 75 - Personalizing Prokaryotic Protection
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Description:

348. BacterioFiles Micro Edition 74 - Phages Facilitate Fester Fighting
http://www.microbeworld.org/in... download (audio/mpeg, 4.46Mb)

Description:

349. BacterioFiles Micro Edition 73 - Single Cells Start Sticking
http://www.microbeworld.org/in... download (audio/mpeg, 4.48Mb)

Description:

This episode: Scientists coax yeast to evolve into multicellular clusters!

Download Episode (4.5 MB, 5 minutes)

Show notes:
News item 1/News item 2/Journal Paper

Other interesting stories:

Bacterial swarm communication could improve robots Plant pests trade good bacteria by feeding on the same plant Yeast cell parents give daughter cells their newer, less damaged proteins Researchers figure out how bacteria break down certain hazardous pollutants E. coli made to produce biofuel from switchgrass Bacteria could help produce vaccines (paper) Probiotics could help when brain trauma causes whacky immune system

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350. BacterioFiles Micro Edition 72 - Microbes Manipulate Mosquito Messages
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351. BacterioFiles Micro Edition 71 - Bright Bacteria Brave Biting
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This episode: Some ocean bacteria glow to attract those that eat them!

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Show notes:
News item/Journal Paper

Other interesting stories:

Some molds could actually help fight plant diseases Probiotics might help treat antibiotic-induced diarrhea Fecal transplants seem to effectively treat Clostridium difficile infections Could bacteria that eat other bacteria treat disease? Identifying bacteria that could help clean up contaminated water (paper) Bacteria could one day power airplanes A way to make bacteria produce fuel from sugar very quickly

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352. BacterioFiles Micro Edition 70 - Microbes Make Multiple Magnets
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353. BacterioFiles Micro Edition 69 - Plants' Prokaryotic Partners
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354. BacterioFiles Micro Edition 68 - Crustacean Calorie Caretaker
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This episode: Newly-discovered underwater crab farms its own bacterial food!

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Show notes:
News item 1/News item 2/Journal Paper

Other interesting stories:

There is probably (microbial) life on Mars--that we put there (by accident) Cyanobacterial viruses are photosynthetic, sorta (paper) Freshwater springs in the Dead Sea allow interesting microbial growth Bacteria and yeast engineered to produce a new kind of diesel-like biofuel Using soil bacteria to kill cancer Heat-loving fungi could be good at making biofuels Bacteria could help clean up arsenic and make better cropland

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355. BacterioFiles Micro Edition 67 - Healthful Helper Helices
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356. BacterioFiles Micro Edition 66 - Microbe-Mycelium Mutualism
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357. BacterioFiles Micro Edition 65 - Superfluous Cells Stop Sniffles
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358. BacterioFiles Micro Edition 64 - Proving Probiotic Products
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This episode: Probiotic yogurt doesn't seem to change microbial community much!

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Show notes:
News article/Journal Paper

Other interesting stories:

Breastfeeding seems to related to infants' risk of Celiac disease via gut microbes Bacterial fossils found that seem to be 3.4 billion years old Bacteria can make electricity from wastewater Beneficial bacteria may be permanently lost because of antibiotics Plant-dwelling fungi may degrade polyurethane (paper) Vegetable oil could help bacteria clean up uranium contamination (paper) Helping yeast resist stresses of biofuel production

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359. BacterioFiles Micro Edition 63 - Bombus Bacteria Beat Baddies
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360. BacterioFiles Micro Edition 62 - Plant-like Polymer Production
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This episode: Algae are good for making bioplastic!

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Show notes:
News article/Journal Paper

Other interesting stories:

Yeasts may make greener chemicals Bacteria could clean up toxic chemicals from PVC production Bacteria seem to have eaten that big oil spill more quickly than expected How cyanobacteria stock up on energy and how this could help make hydrogen Fungi from rainforest could degrade plastic Frankia bacteria could produce many useful chemicals Gut parasite could lead to advances in swimming robots

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361. BacterioFiles Micro Edition 61 - Cells Support Cellulosic Supper
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This episode: Bacteria may help pandas be herbivorous!

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Show notes:
News article 1/News article 2/Journal Paper

Other interesting stories:

Fungi could help crops survive many kinds of stress Using bacteria to get more oil out of wells Bacteria could help fight AIDS Fungus helps control tree-killing insect Just one species of microbe in many different forms

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362. BacterioFiles Micro Edition 60 - Making Mysterious Microbial Missives
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This episode: Sending secret messages with glowing bacteria!

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Show notes:
News article 1/News article 2/News Article 3/Journal Paper

Other interesting stories:

Stomach bacteria seem to protect against asthma Microbes have nearly boiling-temp cellulose-digesting enzyme Navy probes powered by bacteria Using algae that made fossil fuels as clues to produce new biofuels Carbon dioxide could make soil microbes produce more greenhouse gases Debate about whether viruses are separate branch of life Dry rot fungus could help make better biofuels

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363. BacterioFiles Micro Edition 59 - Brine Boosts Bacterial Bond-Breaking
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This episode: Bacteria and salt water combine forces to produce hydrogen gas for fuel!

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Show notes:
News article 1/News article 2/Journal Paper

Other interesting stories:

Predatory bacteria could treat infections with other bacteria Worm discovered depending on bacteria - symbiosis is 500 myo Bacteria help clean oil spills so plants can grow Salmonella bacteria could help make life-saving vaccines Salt-loving microbes have enzymes that could be useful for biofuels Marsupial gut microbes break down food without producing methane - could be good for cows Belly Button Biodiversity Project

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364. BacterioFiles Micro Edition 58 - Baculovirus Blocks Bug Behavior
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365. BacterioFiles Micro Edition 57 - Rods Reduce Radioactivity
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366. BacterioFiles Micro Edition 56 - Cells Survive Synthetic Substitution
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This episode: Evolving bacteria to use a synthetic base in its DNA!

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Show notes:
News article/Journal Paper

Other interesting stories:

Fungi could reduce need for fertilizer Convincing photosynthesizers to make more hydrogen Bacteria can use caffeine as food Bacteria can induce rainfall Creating synthetic circuits in bacteria Bacteria actually police their community to punish cheaters Cyanobacteria programmed to secrete biofuels, making harvest easy

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367. BacterioFiles Micro Edition 55 - Insect Invaders Inhibit Infections
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