Journal
JOURNAL OF BACTERIOLOGY
Volume 198, Issue 7, Pages 1009-1012Publisher
AMER SOC MICROBIOLOGY
DOI: 10.1128/JB.00110-16
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- National Institutes of Health [GM27068]
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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.
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