Mycelial actinobacteria in salt-affected soils of arid territories of Ukraine and Russia

A high population density (up to hundreds of thousands or millions CFU/g soil) of mycelial bacteria (actinomycetes) is determined in salt-affected soils of arid territories of Ukraine, Russia, and Turkmenistan. Of all the studied soils, the lowest amounts of actinomycetes (thousands and tens of thou...

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Veröffentlicht in:Eurasian soil science 2015, Vol.48 (1), p.72-76
Hauptverfasser: Grishko, V. N, Syshchikova, O. V, Zenova, G. M, Kozhevin, P. A, Dubrova, M. S, Lubsanova, D. A, Chernov, I. Yu
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container_end_page 76
container_issue 1
container_start_page 72
container_title Eurasian soil science
container_volume 48
creator Grishko, V. N
Syshchikova, O. V
Zenova, G. M
Kozhevin, P. A
Dubrova, M. S
Lubsanova, D. A
Chernov, I. Yu
description A high population density (up to hundreds of thousands or millions CFU/g soil) of mycelial bacteria (actinomycetes) is determined in salt-affected soils of arid territories of Ukraine, Russia, and Turkmenistan. Of all the studied soils, the lowest amounts of actinomycetes (thousands and tens of thousands CFU/g soil) are isolated from sor (playa) and soda solonchaks developed on the bottoms of drying salt lakes in Buryatia and in the Amu Darya Delta. Actinomycetes of the Streptomyces, Micromonospora, and Nocardiopsis genera were recorded in the studied soils. It is found that conditions of preincubation greatly affect the activity of substrate consumption by the cultures of actinomycetes. This could be attributed to changes in the metabolism of actinomycetes as a mechanism of their adaptation to the increased osmotic pressure of the medium. The alkali tolerance of halotolerant actinomycetes isolated from the salt-affected soils is experimentally proved.
doi_str_mv 10.1134/S1064229315010081
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subjects Actinobacteria
Actinomycetes
alkali tolerance
arid soils
bacteria
Biogeochemistry
drying
Earth and Environmental Science
Earth Sciences
Freshwater
Geotechnical Engineering & Applied Earth Sciences
Lakes
metabolism
Micromonospora
mycelium
Nocardiopsis
Osmotic pressure
Physiological aspects
playas
Population density
Salt
Salt lakes
salt tolerance
Soil Biology
Soil microbiology
Soil sciences
Soils
Solonchaks
Streptomyces
title Mycelial actinobacteria in salt-affected soils of arid territories of Ukraine and Russia
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