Genomewide screen for modulators of evolvability under toxic antibiotic exposure

Orsolya Méhi, Balázs Bogos, Bálint Csörgo, Csaba Pál

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5 Citations (Scopus)


Antibiotic resistance is generally selected within a window of concentrations high enough to inhibit wild-type growth but low enough for new resistant mutants to emerge. We studied de novo evolution of resistance to ciprofloxacin in an Escherichia coli knockout library. Five null mutations had little or no effect on intrinsic antibiotic susceptibility but increased the upper antibiotic dosage to which initially sensitive populations could adapt. These mutations affect mismatch repair, translation fidelity, and iron homeostasis.

Original languageEnglish
Pages (from-to)3453-3456
Number of pages4
JournalAntimicrobial agents and chemotherapy
Issue number7
Publication statusPublished - Jul 1 2013


ASJC Scopus subject areas

  • Pharmacology
  • Pharmacology (medical)
  • Infectious Diseases

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