The role of environmental factors for the composition of microbial communities of saline lakes in the Novosibirsk region (Russia)

Nothing is currently known about microbial composition of saline lakes of the Novosibirsk region and its dependence on physical-chemical parameters of waters. We studied the structure of microbial communities of saline lakes of the Novosibirsk region and the effect of physical-chemical parameters of...

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Bibliographic Details
Published in:	BMC microbiology Vol. 16 Suppl 1; no. 3; p. 4
Main Authors:	Bryanskaya, Alla V, Malup, Tatyana K, Lazareva, Elena V, Taran, Oxana P, Rozanov, Alexey S, Efimov, Vadim M, Peltek, Sergey E
Format:	Journal Article
Language:	English
Published:	England BioMed Central Ltd 27-01-2016 BioMed Central
Subjects:	Aquatic microbiology Archaea - classification Archaea - genetics Archaea - isolation & purification Archaea - metabolism Bacteria - classification Bacteria - genetics Bacteria - isolation & purification Bacteria - metabolism Biodiversity Environmental aspects Lakes - chemistry Lakes - microbiology Microbiology Phylogeny Russia Sodium Chloride - analysis Sodium Chloride - metabolism Water Russia
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Summary:	Nothing is currently known about microbial composition of saline lakes of the Novosibirsk region and its dependence on physical-chemical parameters of waters. We studied the structure of microbial communities of saline lakes of the Novosibirsk region and the effect of physical-chemical parameters of waters on microbial communities of these lakes. According to the ion content, the lakes were classified either as chloride or chloride-sulfate types. Water salinity ranges from 4.3 to 290 g L(-1). Many diverse microbial communities were found. Filamentous and colonial Cyanobacteria of the genera Scytonema, Aphanocapsa, and/or filamentous Algae dominated in littoral communities. Spatial and temporal organization of planktonic microbial communities and the quantities of Archaea and Bacteria were investigated using fluorescent in situ hybridization. We have found that the dominant planktonic component is represented by Archaea, or, less frequently, by Bacteria. Various phylogenetic groups (Bacteria, Archaea, Algae, and Cyanobacteria) are nonuniformly distributed. The principal component analysis was used to detect environmental factors that affect microorganism abundance. We found the principal components responsible for 71.1 % of the observed variation. It was demonstrated that two-block partial least squares was a better method than principal component analysis for analysis of the data. We observed general relationships between microbial abundance and water salinity. We have performed the first-ever study of the structure of the microbial communities of eleven saline lakes in the Novosibirsk region along with their physical-chemical parameters of waters. Our study demonstrates that saline lakes in the Novosibirsk region contain a unique microbial communities that may become a prolific source of microorganisms for fundamental and applied studies in various fields of ecology, microbiology, geochemistry, and biotechnology, and deserve further metagenomic investigation.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	1471-2180 1471-2180
DOI:	10.1186/s12866-015-0618-y