Reinterpreting long-term evolution experiments: Is delayed adaptation an example of historical contingency or a consequence of intermittent selection?

John R. Roth, Sophie Maisnier-Patin

Research output: Contribution to journalComment/debate

3 Scopus citations

Abstract

Van Hofwegen et al. demonstrated that Escherichia coli rapidly evolves the ability to use citrate when long selective periods are provided (D. J. Van Hofwegen, C. J. Hovde, and S. A. Minnich, J Bacteriol 198:1022-1034, 2016, http://dx.doi.org/10.1128/JB.008 31-15). This contrasts with the extreme delay (15 years of daily transfers) seen in the long-term evolution experiments of Lenski and coworkers. Their idea of "historical contingency" may require reinterpretation. Rapid evolution seems to involve selection for duplications of the whole cit locus that are too unstable to contribute when selection is provided in short pulses.

Original languageEnglish (US)
Pages (from-to)1009-1012
Number of pages4
JournalJournal of Bacteriology
Volume198
Issue number7
DOIs
StatePublished - 2016

ASJC Scopus subject areas

  • Microbiology
  • Molecular Biology

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