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Microbial community structure and diversity within hypersaline Keke Salt Lake environments.
- Source :
-
Canadian journal of microbiology [Can J Microbiol] 2017 Nov; Vol. 63 (11), pp. 895-908. Date of Electronic Publication: 2017 Aug 29. - Publication Year :
- 2017
-
Abstract
- Keke Salt Lake is located in the Qaidamu Basin of China. It is a unique magnesium sulfate-subtype hypersaline lake that exhibits a halite domain ecosystem, yet its microbial diversity has remained unstudied. Here, the microbial community structure and diversity was investigated via high-throughput sequencing of the V3-V5 regions of 16S rRNA genes. A high diversity of operational taxonomic units was detected for Bacteria and Archaea (734 and 747, respectively), comprising 21 phyla, 43 classes, and 201 genera of Bacteria and 4 phyla, 4 classes, and 39 genera of Archaea. Salt-saturated samples were dominated by the bacterial genera Bacillus (51.52%-58.35% relative abundance), Lactococcus (9.52%-10.51%), and Oceanobacillus (8.82%-9.88%) within the Firmicutes phylum (74.81%-80.99%), contrasting with other hypersaline lakes. The dominant Archaea belonged to the Halobacteriaceae family, and in particular, the genera (with an abundance of >10% of communities) Halonotius, Halorubellus, Halapricum, Halorubrum, and Natronomonas. Additionally, we report the presence of Nanohaloarchaeota and Woesearchaeota in Qinghai-Tibet Plateau lakes, which has not been previously documented. Total salinity (especially Mg <superscript>2+</superscript> , Cl <superscript>-</superscript> , Na <superscript>+</superscript> , and K <superscript>+</superscript> ) mostly correlated with taxonomic distribution across samples. These results expand our understanding of microbial resource utilization within hypersaline lakes and the potential adaptations of dominant microorganisms that allow them to inhabit such environments.
- Subjects :
- Archaea genetics
Bacteria genetics
China
Ecosystem
Euryarchaeota genetics
Euryarchaeota isolation & purification
Firmicutes genetics
Firmicutes isolation & purification
Halobacteriaceae genetics
Halobacteriaceae isolation & purification
Phylogeny
RNA, Ribosomal, 16S genetics
Tibet
Archaea isolation & purification
Bacteria isolation & purification
Biodiversity
Lakes microbiology
Microbial Consortia
Salinity
Subjects
Details
- Language :
- English
- ISSN :
- 1480-3275
- Volume :
- 63
- Issue :
- 11
- Database :
- MEDLINE
- Journal :
- Canadian journal of microbiology
- Publication Type :
- Academic Journal
- Accession number :
- 28850799
- Full Text :
- https://doi.org/10.1139/cjm-2016-0773