Phylogenetic diversity of microbial communities of the Posolsk Bank bottom sediments, Lake Baikal
| Autor: | T. V. Pogodaeva, S. M. Chernitsyna, Tamara I. Zemskaya, N. V. Pimenov, E. V. Mamaeva, Yu. P. Galach’yants, Oleg Khlystov, S. V. Bukin, A. V. Lomakina |
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| Rok vydání: | 2016 |
| Předmět: |
0301 basic medicine
Thaumarchaeota biology Firmicutes Ecology 030106 microbiology Bacteroidetes biology.organism_classification Applied Microbiology and Biotechnology Microbiology Nitrospirae 03 medical and health sciences 030104 developmental biology Chloroflexi (class) Proteobacteria Acidobacteria Archaea |
| Zdroj: | Microbiology. 85:672-680 |
| ISSN: | 1608-3237 0026-2617 |
| DOI: | 10.1134/s0026261716060060 |
| Popis: | Massive parallel sequencing (the Roche 454 platform) of the 16S rRNA gene fragments was used to investigate microbial diversity in the sediments of the Posolsk Bank cold methane seep. Bacterial communities from all sediment horizons were found to contain members of the phyla Actinobacteria, Bacteroidetes, Deinococcus-Thermus, Firmicutes, Nitrospirae, Chloroflexi, Proteobacteria, and the candidate phyla Aminicenantes (OP8) and Atribacteria (OP9). Among Bacteria, members of the Chloroflexi and Proteobacteria were the most numerous (42 and 46%, respectively). Among archaea, the Thaumarchaeota predominated in the upper sediment layer (40.1%), while Bathyarchaeota (54.2%) and Euryarchaeota (95%) were predominant at 70 and 140 cm, respectively. Specific migration pathways of fluid flows circulating in the zone of gas hydrate stability (400 m) may be responsible for considerable numbers of the sequences of Chloroflexi, Acidobacteria, and the candidate phyla Aminicenantes and Atribacteria in the upper sediment layers and of the Deinococcus-Thermus phylum in deep bottom sediments. |
| Databáze: | OpenAIRE |
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