Distinctive distributions of halophilic Archaea across hypersaline environments within the Qaidam Basin of China
| Autor: | Li Yongzhen, Qifu Long, Rong Wang, Derui Zhu, Wang Zhibo, Guoping Shen, Jiangwa Xing, Rui Han, Xiang Gao |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
China
Salinity Euryarchaeota Halobacterium Biochemistry Microbiology 03 medical and health sciences Microbial ecology RNA Ribosomal 16S Genetics Environmental Microbiology Halobacteriaceae Seawater Halomicrobium Molecular Biology Illumina dye sequencing Ecosystem 030304 developmental biology 0303 health sciences biology 030306 microbiology Ecology General Medicine biology.organism_classification Halophile Halorubrum Archaea |
| Zdroj: | Archives of microbiology. 203(5) |
| ISSN: | 1432-072X |
| Popis: | Halophilic Archaea are widely distributed globally in hypersaline environments. However, little is known of how dominant halophilic archaeal genera are distributed across environments and how they may co-associate across ecosystems. Here, the archaeal community composition and diversity from hypersaline environments (> 300 g/L salinity; total of 33 samples) in the Qaidam Basin of China were investigated using high-throughput Illumina sequencing of 16S rRNA genes. The archaeal communities (total of 3,419 OTUs) were dominated by the class Halobacteria (31.7–99.6% relative abundances) within the phylum Euryarchaeota (90.8–99.9%). Five predominant taxa, including Halorubrum, Halobacterium, Halopenitus, Methanothrix, and Halomicrobium, were observed across most samples. However, several distinct genera were associated with individual samples and were inconsistently distributed across samples, which contrast with previous studies of hypersaline archaeal communities. Additionally, co-occurrence network analysis indicated that five network clusters were present and potentially reflective of interspecies interactions among the environments, including three clusters (clusters II, III, and IV) comprising halophilic archaeal taxa within the Halobacteriaceae and Haloferacaceae families. In addition, two other clusters (clusters I and V) were identified that comprised methanogens. Finally, salinity comprising ionic concentrations (in the order of Na+ > Ca2+ > Mg2+) and pH were most correlated with taxonomic distributions across sample sites. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink