Monday, June 19, 2017

BacterioFiles 298 - Bacteria Boost Bone Buildup

Human skeleton
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.

Other interesting stories:
  • Raindrops can spread soil bacteria around everywhere
  • Lots to learn from studying sauerkraut (paywall)
  • Only some bacteria in a colony do all the expanding and multiplying (paper)
  • Phage genes help Wolbachia prevent host insects from interbreeding with uninfected hosts (paper)
  • Probiotic bacteria could help prevent damage from heavy metals (paper)

  • Post questions or comments here or email to bacteriofiles@gmail.com. Thanks for listening!

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    Monday, June 12, 2017

    BacterioFiles 297 - Defenders Develop Disease Decrease

    C. elegans roundworm
    By Bob Goldstein, CC BY-SA 3.0
    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.

    Other interesting stories:
  • Fungus eats dead insects and keeps bacterial competitors away (paper)
  • Soil microbes are better for green roof soils than chemical fertilizers
  • Soil microbes make tuberculosis-treating chemicals
  • Parkinson's and treatments can have detectable effects on microbiome
  • Aspergillus fungi have a lot of potential uses

  • Post questions or comments here or email to bacteriofiles@gmail.com. Thanks for listening!

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    Monday, June 5, 2017

    BacterioFiles 296 - Predator Permits Pathogen Penetration

    Cyclopoid copepod
    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.

    Other interesting stories:
  • Microbes are important for protecting bees
  • Ant bacteria produce potential new antibiotics
  • Old microbes discovered living in mine crystals
  • Skin bacteria could protect against pathogens
  • Author is writing poems in a bacterial genome so they survive the apocalypse (paywall)

  • Post questions or comments here or email to bacteriofiles@gmail.com. Thanks for listening!

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    Monday, May 29, 2017

    BacterioFiles 295 - Fly Ferries Fungus Feebleness

    Lycoriella fly
    By Kai Heller, CC BY 3.0
    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.

    Other interesting stories:
  • Iron-containing molecules can help various bacteria generate electricity
  • Exercise lifestyle can affect gut community (paper)
  • New discovery of plastic-degrading microbe enzymes
  • Controlling bacterial metabolism dynamically
  • Bacteria in bats could be good at fighting fungal pathogens (paper)

  • Post questions or comments here or email to bacteriofiles@gmail.com. Thanks for listening!

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    Monday, May 22, 2017

    BacterioFiles 294 - Bacteria Benefit Bad Burns

    Lactobacillus plantarum colonies
    Donald Breakwell et al. 2007. 
    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.

    Other interesting stories:
  • Bacteria can help cotton plants tolerate salt (paper)
  • Fiber stops microbes from eating protective gut mucus
  • Potential new antibiotics predicted and discovered in human microbes
  • Bacteria communicate to work together against viruses
  • Root bacteria help protect plants against arsenic and infections

  • Post questions or comments here or email to bacteriofiles@gmail.com. Thanks for listening!

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    Monday, May 15, 2017

    BacterioFiles 293 - Millet Microbe Makes Meshes

    Finger millet
    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.

    Other interesting stories:
  • Animal study of phage cocktail to treat cholera
  • Soil microbes could help clean up arsenic contamination (paper)
  • Bacteria with nucleus-like structure even have nuclear pore-like structures
  • Using bacteria to find best enzymes for degrading lignin (paper)
  • Making microbial fuel cells with paper

  • Post questions or comments here or email to bacteriofiles@gmail.com. Thanks for listening!

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    Monday, May 8, 2017

    BacterioFiles 292 - Testing Tardigrade Tolerance Tricks

    Tardigrade
    By Bob Goldstein and Vicky Madden
    CC BY-SA 3.0
    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.

    Other interesting stories:
  • New sunscreen compounds could come from bacteria
  • Bacterial fingerprints don't last forever (paper)
  • Virus infecting bacteria makes structure like a nucleus (paper)
  • Microbes could produce useful, biological nanowires
  • Finding viruses to control fungal pathogens of plants

  • Post questions or comments here or email to bacteriofiles@gmail.com. Thanks for listening!

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