Potential for adaptation overrides cost of resistance

Future Microbiology
Jorge Moura de SousaIsabel Gordo

Abstract

To investigate the cost of antibiotic resistance versus the potential for resistant clones to adapt in maintaining polymorphism for resistance. Experimental evolution of Escherichia coli carrying different resistance alleles was performed under an environment devoid of antibiotics and evolutionary parameters estimated from their frequencies along time. Costly resistance mutations were found to coexist with lower cost resistances for hundreds of generations, contrary to the hypothesis that the cost of a resistance dictates its extinction. Estimated evolutionary parameters for the different resistance backgrounds suggest a higher adaptive potential of clones with costly antibiotic resistance mutations, overriding their initial cost of resistance and allowing their maintenance in the absence of drugs.

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Citations

May 17, 2018·MBio·M Knopp, D I Andersson
Apr 19, 2017·PLoS Biology·Jorge Moura de SousaIsabel Gordo
Apr 9, 2019·Evolution; International Journal of Organic Evolution·Florence BanseptClaude Loverdo
Apr 11, 2020·PLoS Computational Biology·Loïc Marrec, Anne-Florence Bitbol
Mar 27, 2019·Trends in Microbiology·Philippe RemigiEduardo P C Rocha

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Methods Mentioned

BETA
Flow Cytometry

Software Mentioned

Mathematica
BRESEQ pipeline

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