Temperature adaptation of mycelium bacteria of tundra and taiga soils

• Main Authors: G.M. Zenova, N.A. Manucharova, M.S. Dubrova
• Format: Dataset
• Language: Russian
• Published: Theoretical and Applied Ecology 2010
• Subjects: adaptation; psycho-tolerance; actinomycetes; mycelium length; prokaryote microbe communities; taiga; Tundra
• Online Access: https://dx.doi.org/10.25750/1995-4301-2010-3-082-089; http://envjournal.ru/ari/v2010/v3/10313.pdf

The article shows that soil psycho-tolerant actinomycetes develop in the soils of Polar and Boreal geographical zone. In the soil of northern regions the number of psycho-tolerant filamentous prokaryotes is thousands and hundreds of thousands CFU/g of substrate, mycelium length reaches 380 m/g of soil. By the method of hybridization in situ (method FISH – fluorescent in situ hybridization) it was shown that physiologically active psycho-tolerant representatives of the phylogenetic group Actinobacteria account for up to 30% of the total number of bacteria in prokaryote microbe communities of soils and mats, the amount of metabolically active mycelium actinobacteria is larger than the amount of unicellular actinobacteria. Xerophilous quality of the psycho-tolerant culture Streptomyces aburaviensis was stated, this culture was isolated from weakly-podzolic grey soil. Psycho-tolerant actinomycetes demonstrate pektinolitic, amylolytic, and antagonistic activity at low temperatures..