Microbial community structure and diversity within hypersaline Keke Salt Lake environments
| Autor: | Derui Zhu, Laisheng Chen, Qifu Long, Deli Liu, Jing Liu, Xin Zhang, Rui Han |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
0301 basic medicine
China Salinity Microbial Consortia 030106 microbiology Immunology Firmicutes Euryarchaeota engineering.material Biology Structural basin Tibet Applied Microbiology and Biotechnology Microbiology Salt lake 03 medical and health sciences RNA Ribosomal 16S Genetics Ecosystem Molecular Biology Phylogeny Halobacteriaceae Bacteria Ecology Community structure Biodiversity General Medicine Hypersaline lake biology.organism_classification Archaea Lakes 030104 developmental biology Microbial population biology engineering Halite |
| Zdroj: | Canadian Journal of Microbiology. 63:895-908 |
| ISSN: | 1480-3275 0008-4166 |
| DOI: | 10.1139/cjm-2016-0773 |
| Popis: | 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 Mg2+, Cl–, Na+, and K+) 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. |
| Databáze: | OpenAIRE |
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