Salmonella typhimurium displays cyclical patterns of sensitivity to UV-C killing during prolonged incubation in the stationary phase of growth

被引：26

作者：

Child, M

Strike, P

Pickup, R

Edwards, C ^{[1
]}

机构：

[1] Univ Liverpool, Sch Biol Sci, Liverpool L69 7ZB, Merseyside, England

[2] CEH Windermere, Ambleside LA22 0LP, Cumbria, England

来源：

FEMS MICROBIOLOGY LETTERS | 2002年 / 213卷 / 01期

关键词：

stationary phase cell; UV-C sensitivity; rpoS minus mutant; Salmonella typhimurium;

D O I：

10.1111/j.1574-6968.2002.tb11289.x

中图分类号：

Q93 [微生物学];

学科分类号：

071005 ; 100705 ;

摘要：

Stationary phase cells of Salmonella typhimurium were more resistant to killing by UV-C irradiation than those from the exponential phase. Analysis of the tolerance of cells taken at different stages of prolonged incubation as batch cultures to 60 or 100 J m(2) doses of UV-C revealed cycles of resistance and tolerance. The possible involvement of rpoS-controlled functions in mediating these cycles could be discounted because they were also detected in an rpoS minus mutant of S. typhimurium. The results are discussed in the context of heterogeneity in cells of stationary phase cultures of S. typhimurium. (C) 2002 Federation of European Microbiological Societies. Published by Elsevier Science B.V. All rights reserved.

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页码：81 / 85

页数：5

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