MICROBIAL COMPETITION - ESCHERICHIA-COLI MUTANTS THAT TAKE OVER STATIONARY PHASE CULTURES

被引：452

作者：

ZAMBRANO, MM ^{[1
]}

SIEGELE, DA ^{[1
]}

ALMIRON, M ^{[1
]}

TORMO, A ^{[1
]}

KOLTER, R ^{[1
]}

机构：

[1] HARVARD UNIV,SCH MED,DEPT MICROBIOL & MOLEC GENET,BOSTON,MA 02115

来源：

SCIENCE | 1993年 / 259卷 / 5102期

关键词：

D O I：

10.1126/science.7681219

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Many microorganisms, including Escherichia coli, can survive extended periods of starvation. The properties of cells that survived prolonged incubation in stationary phase were studied by mixture of 10-day-old (aged) cultures with 1-day-old (young) cultures of the same strain of Escherichia coli. Mutants from the aged cultures that could grow eventually took over the population, which resulted in the death of the cells from the young cultures. This phenotype was conferred by mutations in rpoS, which encodes a putative stationary phase-specific sigma factor. These rapid population shifts have implications for the studies of microbial evolution and ecology.

引用

页码：1757 / 1760

页数：4

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