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Mycelial fungi in cryopegs

Published online by Cambridge University Press:  10 June 2005

S.M. Ozerskaya
Affiliation:
All-Russian Collection of Microorganisms, G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Pushchino, Moscow Region 142290, Russia e-mail: smo@dol.ru
N.E. Ivanushkina
Affiliation:
All-Russian Collection of Microorganisms, G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Pushchino, Moscow Region 142290, Russia e-mail: smo@dol.ru
G.A. Kochkina
Affiliation:
All-Russian Collection of Microorganisms, G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Pushchino, Moscow Region 142290, Russia e-mail: smo@dol.ru
R.N. Fattakhova
Affiliation:
Institute of Physicochemical and Biological Problems on Soil Science, Russian Academy of Sciences, Pushchino, Moscow Region 142290, Russia
D.A. Gilichinsky
Affiliation:
Institute of Physicochemical and Biological Problems on Soil Science, Russian Academy of Sciences, Pushchino, Moscow Region 142290, Russia
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Abstract

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Mycelial fungi from cryopegs (tundra, Kolyma lowland, Russia) have been studied. The use of media with different amounts of salt and cultivation at 4 and 25 °C allowed us to isolate filamentous fungi assigned to 11 species. The micromycetes of genus Geomyces were found most often. The total amount of fungi reached 1–4×102 CFU ml−1 of water. The extreme conditions of the cryopegs – the high salinity of the water (150–200 g l−1) and the constant low temperatures (average annual temperature is from −9 to −11 °C) – might serve as a model for the conditions of interplanetary environments.

Type
Research Article
Copyright
2005 Cambridge University Press