This Week in Microbiology

TWiM 79: A community of microbiologists

May 29, 2014

Hosts: Vincent Racaniello, Michael Schmidt, and Michele Swanson

Vincent, Michael, and Michele review highlights of the 2014 General Meeting of the American Society for Microbiology in Boston, MA.

Right click to download TWiM#79 (49 MB .mp3, 71 minutes).

Subscribe to TWiM (free) on iTunes, via RSS feed, by email or listen on your mobile device with the Microbeworld app.

Links for this episode:

ASM General Meeting 2014
ASMCUE
Video of Listeria infection (one, two)
Where pathogens can linger on airplanes (ASMLive)
Coral reef ecosystems lab
TWiV 286: Boston TWiV party
Letters read on TWiM 79

Send your microbiology questions and comments to twim@microbe.tv

TWiM 78: A bacterium grows in Brooklyn

May 15, 2014

MacConkey's agar Hosts: Vincent Racaniello, Elio Schaechter, and Michael Schmidt

Vincent, Elio, and Michael consider a fungal pathogen of insects that acquired a gene from its host that facilitates infection, and presence of gram-negative nosocomial pathogens on community surfaces near hospitals in Brooklyn.

Right click to download TWiM#78 (46 MB .mp3, 63 minutes).

Subscribe to TWiM (free) on iTunes, via RSS feed, by email or listen on your mobile device with the Microbeworld app.

Links for this episode:

An insect gene makes a fungus pathogenic (PLoS Path)
Fungi growing out of insects (one and two)
Community surfaces harbor bacterial pathogens (Am J Inf Cont)
Healthcare-associated infections (NEJM)
Image credit
Letters read on TWiM 78

Send your microbiology questions and comments to twim@microbe.tv

TWiM 77: Zombie plants and no pain, no gain

May 1, 2014

Hosts: Vincent Racaniello, Elio Schaechter, Michael Schmidt and Michele Swanson

Vincent, Elio, Michael, and Michelle review how a pathogen promotes plant attractiveness to insect vectors, and activation of sensory neurons that modulate pain and inflammation by bacterial infection.

Right click to download TWiM#77 (49 MB .mp3, 68 minutes).

Subscribe to TWiM (free) on iTunes, via RSS feed, by email or listen on your mobile device with the Microbeworld app.

Links for this episode:

Phytoplasma effector hijacks plant reproduction (PLoS Biol)
Phyllogen induces phyllody (Plant J)
Hacking aphid behavior (TWiV #70)
Demeanors, moods, and microbes (Microbe)
Bacteria activate sensory neurons to immunomodulate (Nature)
Image credit
Letters read on TWiM 77

Send your microbiology questions and comments to twim@microbe.tv

TWiM 76: Genetic biopixels and a pathogenic sweet tooth

April 11, 2014

Hosts: Vincent Racaniello, Elio Schaechter, Michael Schmidt and Michele Swanson

Vincent, Elio, Michael, and Michelle discuss the use of bacteria to build a genetic sensor for heavy metals, and how host sugars help enteric pathogens to expand after antibiotic treatment.

Right click to download TWiM#76 (48 MB .mp3, 67 minutes).

Subscribe to TWiM (free) on iTunes, via RSS feed, by email or listen on your mobile device with the Microbeworld app.

Links for this episode:

Sensing array of radically coupled biopixels (Nature)
Synchronized genetic clocks (YouTube)
Synchronization of 32 metronomes (YouTube)
Quorum sensing – Bonnie Bassler (YouTube)
Host sugars help antibiotic-mediated expansion of enteric pathogens (Nature)
Finding a sugary foothold (Cell Host Micr)
Letters read on TWiM 76

Send your microbiology questions and comments to twim@microbe.tv

TWiM 75: Pellicles on pickle jars

March 27, 2014

Hosts: Vincent Racaniello, Elio Schaechter, Michael Schmidt and Michele Swanson

Vincent, Elio, Michael, and Michelle discuss a symbiosis between a bacterium and fungus that increases the virulence of oral biofilms, and the assembly of amyloid fibers, which are needed for biofilm formation.

Right click to download TWiM#75 (59 MB .mp3, 81 minutes).

Subscribe to TWiM (free) on iTunes, via RSS feed, by email or listen on your mobile device with the Microbeworld app.

Links for this episode:

My podcast Vinny (TWiV #277)
Accessory protein for B. subtilis amyloid formation (J Bact)
Natto
Microbial amyloids (Trends Micro)
Functional bacterial amyloid (Cell Mol Life Sci)
Symbiosis in early-childhood dental caries (Inf Immun)
Human Dental Plaque showing iodophilic polysaccharide synthesis (photo)
Letters read on TWiM 75

Send your microbiology questions and comments to twim@microbe.tv

TWiM 74: It came from the Siberian permafrost

March 12, 2014

Hosts: Vincent Racaniello, Elio Schaechter, and Michael Schmidt.

Vincent, Elio, and Michael discuss a huge 30,000 year old virus recovered from Siberia, and nested symbiosis facilitated by horizontal gene transfer from bacteria to insect.

Right click to download TWiM#74 (51 MB .mp3, 70 minutes).

Subscribe to TWiM (free) on iTunes, via RSS feed, by email or listen on your mobile device with the Microbeworld app.

Links for this episode:

Meet 30,000 year old Pithovirus (PNAS)
Gene transfer from bacteria to insect genome allows nested symbiosis (Cell)
Letters read on TWiM 074

Send your microbiology questions and comments to twim@microbe.tv

TWiM 73: Eyeing root nodule development

February 27, 2014

Hosts: Vincent Racaniello, Michael Schmidt and Michele Swanson

Vincent, Michael, and Michele discuss how soil-dwelling bacteria induce the formation of root nodules on legumes via a protein called CYCLOPS.

Right click to download TWiM#73 (57.5 MB .mp3, 80 minutes).

Subscribe to TWiM (free) on iTunes, via RSS feed, by email or listen on your mobile device with the Microbeworld app.

Links for this episode:

CYCLOPS orchestrates root nodule development (Cell Host Micr)
Speak friend, and enter (Nat Rev Micr)
CYCLOPS: A new vision (Cell Host Micr)
Letters read on TWiM 073

Send your microbiology questions and comments to twim@microbe.tv

TWiM 72: The benefits of virulence

February 13, 2014

Hosts: Vincent Racaniello, Elio Schaechter, Michael Schmidt and Michele Swanson

Vincent, Elio, Michael, and Michele review how microbial virulence can be increased as a consequence of community surveillance and adaptation to macrophages.

Right click to download TWiM#72 (53 MB .mp3, 74 minutes).

Subscribe to TWiM (free) on iTunes, via RSS feed, by email or listen on your mobile device with the Microbeworld app.

Links for this episode:

Community surveillance enhances Pseudomonas virulence (PNAS)
Drosophila as a model for infection (DMM)
Adaptation of E. coli to macrophages (PNAS)
Image credit: DMM
Letters read on TWiM 072

Send your microbiology questions and comments to twim@microbe.tv

TWiM 71: Colon cancer’s little shop of horrors

January 22, 2014

Hosts: Vincent Racaniello, Michael Schmidt and Michele Swanson

Vincent, Michael, and Michele explain how the gut microbiome modulates colon tumorigenesis, and regulation of intestinal macrophage function by the microbial metabolite butyrate.

Right click to download TWiM#71 (57 MB .mp3, 78 minutes).

Subscribe to TWiM (free) on iTunes, via RSS feed, by email or listen on your mobile device with the Microbeworld app.

Send your microbiology questions and comments to twim@microbe.tv

TWiM 70: A paroxysmal cough

December 18, 2013

Hosts: Vincent Racaniello, Elio Schaechter, Michael Schmidt and Michele Swanson

Vincent, Elio, Michael, and Michele discuss evidence that the acellular pertussis vaccine fails to prevent infection and transmission in nonhuman primates, and the use of bacterial cytological profiling to identify pathways targeted by antibiotics.

Right click to download TWiM#70 (53 MB .mp3, 73 minutes).

Subscribe to TWiM (free) on iTunes, via RSS feed, by email or listen on your mobile device with the Microbeworld app.

Links for this episode:

Pertussis vaccine fails to prevent infection and transmission (PNAS)
The sound of whooping cough (PKIDs)
Prevalence of pertactin-deficient Bordetella pertussis in US (Clin Vacc Imm)
Cytological profiling identifies targets of antibiotics (PNAS)
Letters read on TWiM 070

Send your microbiology questions and comments to twim@microbe.tv

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TWiM 79: A community of microbiologists

Links for this episode:

TWiM 78: A bacterium grows in Brooklyn

Links for this episode:

TWiM 77: Zombie plants and no pain, no gain

Links for this episode:

TWiM 76: Genetic biopixels and a pathogenic sweet tooth

Links for this episode:

TWiM 75: Pellicles on pickle jars

Links for this episode:

TWiM 74: It came from the Siberian permafrost

Links for this episode:

TWiM 73: Eyeing root nodule development

Links for this episode:

TWiM 72: The benefits of virulence

Links for this episode:

TWiM 71: Colon cancer’s little shop of horrors

Links for this episode:

TWiM 70: A paroxysmal cough

Links for this episode:

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