Mycelial Actinobacteria in Salt-Affected Soils of Arid Territories of Ukraine and Russiaстатья
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Дата последнего поиска статьи во внешних источниках: 18 ноября 2015 г.
Аннотация: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 iso-
lated 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 actino-
mycetes 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.
Keywords: salt-affected soils, soil actinomycetes