PhD in biology, Senior researcher, Associate-professor, Department of 

Federation

 

This email address is being protected from spambots. You need JavaScript enabled to view it.

 

 

Dr. Sci. (Biology), professor, Head of Laboratory, Laboratory of Relict Microbial Communities, Winogradsky Institute of Microbiology, Research Center of Biotechnology RAS

 

Dr. Sci. (Biology), Head of Laboratory, Laboratory of Ecology and Geochemical Activity of Microorganisms, Winogradsky Institute of Microbiology, Research Center of Biotechnology RAS

60th Anniversary of October Av., 7, Bd. 2, 117312 Moscow, Russian Federation

Abstract. Representatives of sulfate-reducing bacteria are among the oldest microorganisms on Earth and play a key role in the global biogeochemical cycles of carbon and sulfur, especially in marine ecosystems. Using the modern molecular biological methods based on the analysis of genes 16S rRNA and dsrAB the heterogeneous phylogenetic composition of different communities of sulfate-reducing bacteria in the water column and sediments of the Barents, Baltic and Black seas was studied. In particular, we have found representatives of the genera Desulfovibrio,Desulfomicrobium, Desulfotomaculum, Desulfococcus, Desulfosarcina, Desulfobacter. For the first time, pure cultures were obtained and the psychrophilic black sea sulfate-reducing bacteria from the water column and bottom sediments of the Black sea were fully characterized. In particular, we described as a new species of Desulfofrigus euxinos, which has a wider range of used donors and electron acceptors than a typical strain.

Key words: sulphate-reducing microorganisms, phylogeny of communities, natural and anthropogenic ecosystems.