Differential high pressure survival in stationary-phase Escherichia coli MG1655

被引：6

作者：

Griffin, Patrick L. ^{[1
,2
]}

Kish, Adrienne ^{[1
]}

Steele, Andrew ^{[1
]}

Hemley, Russell J. ^{[1
]}

机构：

[1] Carnegie Inst Sci, Geophys Lab, Washington, DC 20015 USA

[2] Johns Hopkins Univ, Dept Earth & Planetary Sci, Baltimore, MD 21218 USA

来源：

HIGH PRESSURE RESEARCH | 2011年 / 31卷 / 02期

关键词：

high pressure microbiology; Escherichia coli; differential survival; stationary phase; HIGH HYDROSTATIC-PRESSURE; OXIDATIVE STRESS; MILD-HEAT; IN-VIVO; RESISTANCE; INACTIVATION; ACID; TEMPERATURE; MUTANTS; PROTEIN;

D O I：

10.1080/08957959.2010.550891

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Hydrostatic pressure exerts a profound influence on nearly all facets of cellular structure and function with exposures to sufficiently high pressure leading to microbial inactivation. We report the first observation of a persistent, pressure-resistant subpopulation within stationary-phase samples of Escherichia coli MG1655, a mesophilic bacterium adapted to surface pressure. This high pressure-resistant subpopulation exhibits pressure survival ranging from 0.6 to 2.0 orders of magnitude greater survival than high pressure treatments at pressures of 225-400MPa. We also examine some aspects of pressure treatment protocol that may influence the measurements of high pressure survival.

引用

页码：325 / 333

页数：9

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