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Bacterial Size, Stress, and Antibiotic Resistance

Episode 112 Published 11 months, 1 week ago
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Matters Microbial #112: Bacterial Size, Stress, and Antibiotic Resistance

October 17, 2025

Today Dr. Petra Levin, the George and Irene Freiberg Professor of Biology at Washington University in St. Louis joins the #QualityQuorum to discuss her work with bacterial cell size, environmental stress on bacteria, and antibiotic resistance.

Host: Mark O. Martin

Guest: Petra Levin

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  • An overview of the periplasm, found in Gram negative bacteria.
  • An overview of beta-lactam antibiotics.
  • The field of quantitative microbiology.
  • An overview of B. subtilis. 
  • An overview of E. coli. 
  • An overview of Klebsiella. 
  • The biography of Barbara McClintock, "A Feeling for the Organism."
  • A video explanation of the lac operon of E. coli.
  • The LTEE program (Long Term Evolution Experiment) founded by Dr. Rich Lenski.
  • The nomenclature of monoderm and diderm bacteria.
  • A video explanation of peptidoglycan in bacteria.
  • Penicillin binding proteins (PBP) and antibiotic resistance.
  • A video about cell division in E. coli.
  • A famous article coauthored by Dr. Elio Schaechter that describes cell growth and cell size in bacteria.
  • A related article by Dr. Levin and colleagues.
  • An overview of ESKAPE bacteria.
  • An article from Dr. Levin's research group describing the relationship between pH and antibiotic resistance.
  • An article about persister cells and their relevance to antibiotic resistance.
  • Dr. Levin's faculty website.
  • Dr. Levin's very interesting laboratory website.

Intro music is by Reber Clark

Send your questions and comments to mattersmicrobial@gmail.com

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