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- Title
Structure of Microbial Communities of the Sediments of Alkaline Transbaikalia Lakes with Different Salinity.
- Authors
Zaitseva, S. V.; Abidueva, E. Yu.; Radnagurueva, A. A.; Bazarov, S. M.; Buryukhaev, S. P.
- Abstract
The goal of the work was to reveal the differences in the structure of microbial communities of Transbaikalia alkaline lakes stemming from the differences in their salinity and hydrochemical parameters. The lakes studied were Verkhnee Beloe (Buryat Republic, Russia), as well as Khilganta, Gorbunka, and Borzinskoe (Transbaikal krai, Russia) with salinity from 12.3 to 430 g/L, which differed in the mineral composition of the sediments and hydrochemical parameters. Lake sediments were found to contain 47 prokaryotic phyla (42 bacterial and 5 archaeal ones). The phyla Proteobacteria, Euryarchaeota, Bacteroides, Chloroflexi, Actinobacteria, and Firmicutes were predominant, comprising over 95% of the classified sequences. Comparative abundance of archaea increased with salinity from below 1% in Lake Verkhnee Beloe to 35% in Lake Borzinskoe. The most numerous bacterial OTUs belonged to gammaproteobacteria of the genus Halomonas (up to 15% of the number of classified sequences). The most numerous archaeal OTUs were identified at the genus level as members of the genera Halorubrum and Halohasta belonging to the family Halorubraceae, which comprises extremely halophilic Euryarchaeota.
- Subjects
TRANSBAIKALIA (Russia); MICROBIAL communities; MARINE sediment microbiology; SALT lakes; MICROBIAL ecology; ARCHAEBACTERIA metabolism
- Publication
Microbiology (00262617), 2018, Vol 87, Issue 4, p559
- ISSN
0026-2617
- Publication type
Article
- DOI
10.1134/S0026261718040185