Biodiversity of cryopegs in permafrost

被引：109

作者：

Gilichinsky, D ^{[1
]}

Rivkina, E

Bakermans, C

Shcherbakova, V

Petrovskaya, L

Ozerskaya, S

Ivanushkina, N

Kochkina, G

Laurinavichuis, K

Pecheritsina, S

Fattakhova, R

Tiedje, JM

机构：

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

[2] Michigan State Univ, Ctr Microbial Ecol, E Lansing, MI 48824 USA

[3] Russian Acad Sci, Skryabin Inst Biochem & Physiol Microorganisms, Moscow, Russia

[4] Russian Acad Sci, Shemyakin & Ovchinnikov Inst Bioorgan Chem, Moscow, Russia

来源：

FEMS MICROBIOLOGY ECOLOGY | 2005年 / 53卷 / 01期

关键词：

permafrost; water brines; viable microorganisms; ancient ecosystem; biodiversity; metabolic activity;

D O I：

10.1016/j.femsec.2005.02.003

中图分类号：

Q93 [微生物学];

学科分类号：

071005 ; 100705 ;

摘要：

This study describes the biodiversity of the indigenous microbial community in the sodium-chloride water brines (cryopegs) derived from ancient marine sediments and sandwiched within permafrost 100-120,000 years ago after the Arctic Ocean regression. Cryopegs remain liquid at the in situ temperature of -9 to -11 degrees C and make up the only habitat on the Earth that is characterized by permanently subzero temperatures, high salinity, and the absence of external influence during geological time. From these cryopegs, anaerobic and aerobic, spore-less and spore-forming, halotolerant and halophilic, psychrophilic and psychrotrophic bacteria, mycelial fungi and yeast were isolated and their activity was detected below 0 degrees C. (c) 2005 Federation of European Microbiological Societies. Published by Elsevier B.V. All rights reserved.

引用

页码：117 / 128

页数：12

共 77 条

[1] Effects of salts on Debaryomyces hansenii and Saccharomyces cerevisiae under stress conditions [J].