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This Week in Microbiology is a podcast about unseen life on Earth hosted by Vincent Racaniello and friends. Following in the path of his successful shows 'This Week in Virology' (TWiV) and 'This Week in Parasitism' (TWiP), Racaniello and guests produce an informal yet informative conversation about microbes which is accessible to everyone, no matter what their science background.
 
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show series
 
TWiM reveals a study showing that positive interactions among bacteria are far more common than previously thought, and how acquisition of a single gene enabled Yersinia pestis to expand the range of mammalian hosts that sustain flea-borne plague. Links for this episode: Positive interactions are common among bacteria (Sci Adv) Expansion of mammal …
 
Mark Martin returns to TWiM for a discussion of the observation that Gram’s stain does not cross the bacterial cytoplasmic membrane, and suppression of gingival inflammation and bone loss through host modulation caused by episymbiotic Saccharibacteria. Hosts: Vincent Racaniello, Elio Schaechter, Michele Swanson, and Michael Schmidt Guest: Mark O. M…
 
Petra Levin joins TWiM to tell three stories from her laboratory: how starvation induces shrinkage of the bacterial cytoplasm; plasticity of E. coli cell wall and how it influences antibiotic resistance across different environments; and induction of antibiotic resistance by Triclosan. Hosts: Vincent Racaniello, Elio Schaechter, Michele Swanson, an…
 
Please join Tami Hodge (McGraw Hill Education) & Heidi Smith (Front Range Community College), as they talk about the importance of a solid pre-lab approach. Moving from a print oriented pre-lab to a digital one with McGraw Hill Virtual Labs revolutionized Heidi Smith's lab. 80-90% of her students do the pre-lab work and show up the most prepared!…
 
On this episode of TWiM, using colicins to ferry DNA into cells through an iron transporter, and construction of highly efficient microbial fuel cells that produce more electrical current than previously observed. Links for this episode: Colicins used to ferry DNA into cells (mBio) Highly efficient microbial fuel cells (Science) Silver assists fuel…
 
TWiM explores the role of biofilms in infection by coronaviruses, and development of a Shigella vaccine using outer membrane vesicles derived from Salmonella Become a patron of TWiM. Links for this episode Biofilms and coronaviruses (Appl Envir Micro) Outer membrane vesicle vaccine (Appl Envir Micro) TWiM Listener survey Music used on TWiM is compo…
 
On this episode, an electrochemical scaffold that delivers safe doses of hypochlorous acid to treat wound infections in humans, and a method for sampling and monitoring bacteria and viruses on surfaces using plain paper stickers. Hosts: Vincent Racaniello, Michele Swanson, and Michael Schmidt Links: E-scaffolds on TWiM 143 The EPS matrix (J Bact) I…
 
COVID-19 has challenged everyone to understand how vaccines work and how we can ensure their safety. This talk from microbiology author Marjorie Kelly Cowan is an update of her early summer talk and provides vaccine basics and then the particulars of the vaccines used for COVID-19. Be sure that your students have access to an authoritative source o…
 
TWiM reveals how temporal shifts in antibiotic resistance elements govern phage-pathogen conflicts, and the intracellular localization of toxin-antitoxin proteins in E. coli. Become a Patron of TWiM! Links for this episode: Phage-pathogen conflicts (Science) A ‘Trap-Door’ Strategy for Mobile Element Escape (Front Micro) Location of toxin-antitoxin …
 
Mark Martin returns to TWiM to discuss ways to increase diversity in our field, and the discovery of Borgs, giant extrachromosomal elements with the potential to augment methane oxidation. Hosts: Vincent Racaniello, Elio Schaechter, Michele Swanson, and Michael Schmidt Guest: Mark O. Martin Subscribe to TWiM (free) on iTunes, Google Podcasts, Stitc…
 
TWiM explores whether ‘rewilding’ is a way to get back our missing gut microbes, and failure of bacteriophage therapy due to the production of neutralizing antibodies. Become a patron of TWiM. Links for this episode Gut microbiota through an evolutionary lens (Science) You’re missing microbes (NY Times) There is no ‘healthy’ microbiome (NY Times) A…
 
The TWiM folk explore disruption of a Burkholderia intracellular niche by a cell death program, and an increase in Brucella infectiousness after intracellular passage. Become a patron of TWiM. Links for this episode: Disrupting intracellular niche (mBio) Intracellular passage increases infectiousness (Infect Immun) Type IV secretion systems (Front …
 
In this episode, how polysaccharides keep cyanobacteria afloat in the oceans so that they can carry out photosynthesis, and a symbiotic bacterium that protects honey bees from fungal infections. Become a Patron of TWiM! Links for this episode: Bacterial blooms and polysaccharides (eLife) Social life of cyanobacteria (eLife) Bacteria that protect be…
 
Foodie TWiM reveals that bacteria in human saliva are major components of Ecuadorian indigenous beers, and an unusual E. coli that produces atypical light cream-colored colonies in chromogenic agar. Become a patron of TWiM. Links for this episode: Saliva bacteria in indigenous beers (Peer J) Unusual behavior of E. coli ST59 (Appl Envir Micro) One H…
 
TWiM continues its food arc with an examination of the effect of peroxyacetic acid spray on the microbiome and sensory properties of beef, and explores asymmetry of the cell division machinery during sporulation. Links for this episode: Effect of peroxyacetic acid on beef (Appl Envir Micro) Peracetic acid sterilization (CDC) Different cuts of beef …
 
TWiM reveals the microbiome of sourdough starter cultures, and discovery of a novel family of prokaryotic nanocompartments involved in the metabolism of sulfur. Become a patron of TWiM. Links for this episode Sourdough starter microbiomes (eLife) Prokaryotic nanocompartments (eLife) TWiM Listener survey Music used on TWiM is composed and performed …
 
TWiM explains how Vibrio biofilms are dispersed by polyamine signals, and the induction of inappetence by respiratory virus infection which causes alteration of the gut microbiome. Subscribe to TWiM (free) on Apple Podcasts, Spotify, Google Podcasts, Android, RSS, or by email. Become a patron of TWiM. Links for this episode Regulation of Vibrio bio…
 
TWiM reviews aspirin modulation of Fusobacterium nucleatum, a microbe that has been associated with colorectal cancer, and Elio tells us ‘What are vaccines’, a talk he recently gave to members of his community. Become a patron of TWiM. Links for this episode: Elio’s What are Vaccines? (pdf) Jenner Museum Aspirin modulation of Fusobacterium (mBio) F…
 
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