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Effects of stochasticity and division of labor in toxin production on two-strain bacterial competition in Escherichia coli

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  • Benedikt von Bronk
  • Sophia Anna Schaffer
  • Alexandra Götz
  • Madeleine Opitz

Abstract

In phenotypically heterogeneous microbial populations, the decision to adopt one or another phenotype is often stochastically regulated. However, how this stochasticity affects interactions between competing microbes in mixed communities is difficult to assess. One example of such an interaction system is the competition of an Escherichia coli strain C, which performs division of labor between reproducers and self-sacrificing toxin producers, with a toxin-sensitive strain S. The decision between reproduction or toxin production within a single C cell is inherently stochastic. Here, combining experimental and theoretical approaches, we demonstrate that this stochasticity in the initial phase of colony formation is the crucial determinant for the competition outcome. In the initial phase (t

Suggested Citation

  • Benedikt von Bronk & Sophia Anna Schaffer & Alexandra Götz & Madeleine Opitz, 2017. "Effects of stochasticity and division of labor in toxin production on two-strain bacterial competition in Escherichia coli," PLOS Biology, Public Library of Science, vol. 15(5), pages 1-25, May.
    • Handle: RePEc:plo:pbio00:2001457
    DOI: 10.1371/journal.pbio.2001457
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