Reproduction and metabolism at-10°C of bacteria isolated from Siberian permafrost

被引：130

作者：

Bakermans, C

Tsapin, AI

Souza-Egipsy, V

Gilichinsky, DA

Nealson, KH

机构：

[1] Univ So Calif, Dept Earth Sci, Los Angeles, CA 90089 USA

[2] NASA, Jet Prop Lab, Pasadena, CA 91109 USA

[3] Russian Acad Sci, Inst Physicochem & Biol Problems Soil Sci, Pushchino 142290, Moscow Region, Russia

来源：

ENVIRONMENTAL MICROBIOLOGY | 2003年 / 5卷 / 04期

关键词：

D O I：

10.1046/j.1462-2920.2003.00419.x

中图分类号：

Q93 [微生物学];

学科分类号：

071005 ; 100705 ;

摘要：

We report the isolation and properties of several species of bacteria from Siberian permafrost. Half of the isolates were spore-forming bacteria unable to grow or metabolize at subzero temperatures. Other Gram-positive isolates metabolized, but never exhibited any growth at - 10degreesC. One Gram-negative isolate metabolized and grew at - 10degreesC, with a measured doubling time of 39 days. Metabolic studies of several isolates suggested that as temperature decreased below + 4degreesC, the partitioning of energy changes with much more energy being used for cell maintenance as the temperature decreases. In addition, cells grown at - 10degreesC exhibited major morphological changes at the ultrastructural level.

引用

页码：321 / 326

页数：6

共 31 条

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