Structured habitats and the evolution of anticompetitor toxins in bacteria.

  title={Structured habitats and the evolution of anticompetitor toxins in bacteria.},
  author={Lin Rui Chao and Bruce R. Levin},
  journal={Proceedings of the National Academy of Sciences of the United States of America},
  volume={78 10},
We demonstrate that in liquid cultures, defined in this study as a mass habitat, the outcome of competition between Escherichia coli that produce an antibacterial toxin (colicin) and sensitive E. coli is frequency dependent; the colicinogenic bacteria are at an advantage only when fairly common (frequencies in excess of 2 X 10(-2)). However, we also show that in a soft agar matrix, a structured habitat, the colicinogenic bacteria have an advantage even when initially rare (frequencies as low as… CONTINUE READING
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