Escherichia coli Resistance to Chlorine and Glutathione Synthesis in Response to Oxygenation and Starvation

Author:

Saby Sébastien1,Leroy Pierre2,Block Jean-Claude1

Affiliation:

1. LCPE-LSE, UMR Université CNRS 7564,1 and

2. Centre du Médicament-UPRES EA-ER 635,2Faculté de Pharmacie, 54001 Nancy Cedex, France

Abstract

ABSTRACT Reduced glutathione (GSH) levels and resistance to chlorine were measured for two isogenic Escherichia coli strains stressed by oxygenation and/or starvation. The E. coli mutant deficient in GSH was not more sensitive to the oxidant than its parent strain when the bacteria were cultured with a low oxygenation rate. Starvation or oxygenation increased the resistance of the parent strain to chlorine, while the resistance of the deficient strain remained unchanged.

Publisher

American Society for Microbiology

Subject

Ecology,Applied Microbiology and Biotechnology,Food Science,Biotechnology

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