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. 1995 Feb;177(3):847–850. doi: 10.1128/jb.177.3.847-850.1995

Redundant transfer of F' plasmids occurs between Escherichia coli cells during nonlethal selections.

J E Peters 1, S A Benson 1
PMCID: PMC176670  PMID: 7836326

Abstract

Surface exclusion is the mechanism by which F plasmids prevent the redundant entry of additional F plasmids into the host cell during exponential growth. This mechanism is relaxed in cells that are in stationary phase. Using genetically marked F' plasmids and host strains, we extend this finding to Escherichia coli populations during extended nonlethal selection in bacterial lawns. We show that a high level of redundant transfer occurs between these nongrowing cells during the selection. This result has implications for the mechanism of adaptive mutagenesis.

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Selected References

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