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Physiological characteristics of bacteria isolated from water brines within permafrost

Published online by Cambridge University Press:  05 August 2004

V. Shcherbakova
Affiliation:
Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Pushchino, Moscow Region 142290, Russia e-mail: shcherb@ibpm.pushchino.ru
E. Rivkina
Affiliation:
Institute of Physicochemical and Biological Problems in Soil Science, Russian Academy of Sciences, Pushchino, Moscow Region 142290, Russia
K. Laurinavichuis
Affiliation:
Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Pushchino, Moscow Region 142290, Russia e-mail: shcherb@ibpm.pushchino.ru
S. Pecheritsina
Affiliation:
Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Pushchino, Moscow Region 142290, Russia e-mail: shcherb@ibpm.pushchino.ru
D. Gilichinsky
Affiliation:
Institute of Physicochemical and Biological Problems in Soil Science, Russian Academy of Sciences, Pushchino, Moscow Region 142290, Russia
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Abstract

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In the Arctic there are lenses of overcooled water brines (cryopegs) sandwiched within permafrost marine sediments 100–120 thousand years old. We have investigated the physiological properties of the pure cultures of anaerobic Clostridium sp. strain 14D1 and two strains of aerobic bacteria Psychrobacter sp. isolated from these cryopegs. The structural and physiological characteristics of new bacteria from water brines have shown their ability to survive and develop under harsh conditions, such as subzero temperatures and high salinity.

Type
Research Article
Copyright
2004 Cambridge University Press