Abundance and Diversity of Sulfur-Oxidizing Bacteria along a Salinity Gradient in Four Qinghai-Tibetan Lakes, China
文献类型：期刊论文
| 作者 | Yang, Jian1; Jiang, Hongchen1; Dong, Hailiang1,2; Wu, Geng1; Hou, Weiguo3; Zhao, Wanyu3; Sun, Yongjuan4; Lai, Zhongping4 |
| 刊名 | GEOMICROBIOLOGY JOURNAL
 |
| 出版日期 | 2013-10-21 |
| 卷号 | 30期号:9页码:851-860 |
| 关键词 | Qinghai-tibetan Lakes Sulfur-oxidizing Bacteria Sulfur Cycle Soxb |
| 文献子类 | Article |
| 英文摘要 | Sulfur-oxidizing bacteria (SOB) play important roles in the sulfur cycle and are widespread in a number of environments, but their occurrence and relationship to geochemical conditions in (hyper)saline lakes are still poorly understood. In this study, the abundance and diversity of SOB populations were investigated in four Qinghai-Tibetan lakes (Erhai Lake, Gahai Lake 1, Gahai Lake 2 and Xiaochaidan Lake) by using quantitative polymerase chain reaction (qPCR) and soxB gene- (encoding sulfate thiohydrolase) based phylogenectic analyses. qPCR analyses showed that in the studied lakes, the total bacterial 16S rRNA and soxB gene abundances in the sediments were distinctly higher than in the overlying waters. The 16S rRNA gene abundance in the waters ranged 5.27 x 10(6)-6.09 x 10(8) copies per mL and 7.39 x 10(10)-2.9 x 10(11) copies per gram sediment. The soxB gene abundance in the waters ranged from 1.88 x 10(4) to 5.21 x 10(5) per mL and 4.73 x 10(6)-2.65 x 10(7) copies per gram sediment. The soxB gene in the waters of the two hypersaline lakes (Gahai Lake 2 and Xiaochaidan Lake) was more abundant (2.97 x 10(5) and 5.21 x 10(5) copies per mL) than that in the two low-salinity lakes (1.88 x 10(4) and 3.36 x 10(4) copies per mL). Phylogenetic analysis showed that Alpha- and Betaproteobacteria were dominant SOB in the investigated lakes, and the composition of proteobacterial subgroups varied with salinity: in freshwater Erhai Lake and low-salinity Gahai Lake 1, the SOB populations were dominated by the Betaproteobacteria, whereas in hypersaline Lake Gahai 2 and Xiaochaidan Lake, the SOB populations were dominated by Alphaproteobacteria. Overall, salinity played a key role in controlling the diversity and distribution of SOB populations in the investigated Qinghai-Tibetan lakes. |
| WOS关键词 | DENITRIFICANS GEN. NOV. ; IN-SITU HYBRIDIZATION ; MICROBIAL DIVERSITY ; HYPERSALINE LAKES ; SOXB GENE ; SODA LAKE ; COMMUNITY COMPOSITION ; NORTHWESTERN CHINA ; MOLECULAR ANALYSIS ; SEDIMENTS |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000322307800007 |
| 源URL | [http://ir.isl.ac.cn/handle/363002/4451]  |
| 专题 | 青海盐湖研究所_青海盐湖研究所知识仓储 中国科学院青海盐湖研究所 |
| 作者单位 | 1.China Univ Geosci, State Key Lab Biogeol & Environm Geol, Wuhan 430074, Peoples R China 2.Miami Univ, Dept Geol & Environm Earth Sci, Oxford, OH 45056 USA 3.China Univ Geosci, State Key Lab Biogeol & Environm Geol, Beijing, Peoples R China 4.Chinese Acad Sci, Qinghai Inst Salt Lakes, Xining, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Jian,Jiang, Hongchen,Dong, Hailiang,et al. Abundance and Diversity of Sulfur-Oxidizing Bacteria along a Salinity Gradient in Four Qinghai-Tibetan Lakes, China[J]. GEOMICROBIOLOGY JOURNAL,2013,30(9):851-860. |
| APA | Yang, Jian.,Jiang, Hongchen.,Dong, Hailiang.,Wu, Geng.,Hou, Weiguo.,...&Lai, Zhongping.(2013).Abundance and Diversity of Sulfur-Oxidizing Bacteria along a Salinity Gradient in Four Qinghai-Tibetan Lakes, China.GEOMICROBIOLOGY JOURNAL,30(9),851-860. |
| MLA | Yang, Jian,et al."Abundance and Diversity of Sulfur-Oxidizing Bacteria along a Salinity Gradient in Four Qinghai-Tibetan Lakes, China".GEOMICROBIOLOGY JOURNAL 30.9(2013):851-860. |
入库方式： OAI收割
来源：青海盐湖研究所
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