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.

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.

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.

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.

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.