Thermotolerant and thermophilic actinomycetes from soils of Mongolia desert steppe zone

In the actinomycete complexes of Mongolian desert soils, thermotolerant and thermophilic actinomycetes were found in high abundance, exceeding that of the mesophilic forms. Among the thermotolerant members of the order Actinomycetales, Streptomyces, Micromonospora, Actinomadura , and Streptosporangi...

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Bibliographic Details
Published in:Microbiology (New York) 2012-02, Vol.81 (1), p.98-108
Main Authors: Kurapova, A. I., Zenova, G. M., Sudnitsyn, I. I., Kizilova, A. K., Manucharova, N. A., Norovsuren, Zh, Zvyagintsev, D. G.
Format: Article
Language:English
Subjects:
Biomedical and Life Sciences
Experimental Articles
Life Sciences
Medical Microbiology
Microbiology
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Summary:In the actinomycete complexes of Mongolian desert soils, thermotolerant and thermophilic actinomycetes were found in high abundance, exceeding that of the mesophilic forms. Among the thermotolerant members of the order Actinomycetales, Streptomyces, Micromonospora, Actinomadura , and Streptosporangium species were most widespread in desert soils. Experiments with soil microcosms demonstrated that thermophilic actinomycetes in desert soils grew, developed, and formed mycelia of the length comparable to that of the mesophilic forms of actinomycetes. Molecular biological investigation of the samples of desert steppe soils by denaturing gradient gel electrophoresis (DGGE) and fluorescent in situ hybridization (FISH) revealed members of the phylum Actinobacteria . FISH analysis revealed that the biomass of the metabolically active mycelial actinobacteria in the prokaryotic community of Mongolian desert soils exceeded that of the unicellular Actinobacteria .
ISSN:0026-2617
1608-3237
DOI:10.1134/S0026261712010092