Biomediated Precipitation of Calcium Carbonate in a Slightly Acidic Hot Spring, Yunnan Province
文献类型：期刊论文
| 作者 | Qiao, Haijun1; Xu, Hengchao2 ; Jiang, Lei2
|
| 刊名 | ACTA GEOLOGICA SINICA-ENGLISH EDITION
 |
| 出版日期 | 2017-02-01 |
| 卷号 | 91期号:1页码:145-155 |
| 关键词 | Bio-mediated Calcium Carbonate Slightly Acidic Hot Spring Yunnan Province |
| DOI | 10.1111/1755-6724.13068 |
| 文献子类 | Article |
| 英文摘要 | A slightly acidic hot spring named Female Tower (t=73.5 degrees C, pH=6.64) is located in the Jifei Geothermal Field, Yunnan Province, southwestern China. The precipitates in the hot spring are composed of large amounts of calcite, aragonite and sulfur. Scanning electron microscopy (SEM) analyses reveal that the microbial mats were formed from various coccoid or rod-shaped filamentous microbes. Transmission electron microscopy (TEM) shows that the intracellular sulfur granules are commonly associated with these microbes. A culture-independent molecular phylogenetic analysis demonstrates that the majority of the bacteria in the spring are sulfur-oxidizing bacteria. In the spring water, H2S concentration is up to 60 ppm, while SO(4)(2-)concentration is only about 10 ppm. We speculate that H2S might derive from sulfur-oxidizing bacteria in this hot spring water, leading to the intracellular formation of sulfur granules. Meanwhile, this reaction increased the pH in the micron-scale microdomains, which fosters the precipitation of calcium carbonate in the microbial mats. The results of this study indicate that the sulfur-oxidizing bacteria might play an important role in calcium carbonate precipitation in slightly acidic hot spring environments. |
| WOS关键词 | YELLOWSTONE-NATIONAL-PARK ; REHAI GEOTHERMAL-FIELD ; SOUTHWESTERN CHINA ; MICROBIAL MATS ; SP-NOV. ; BIOFILMS ; CACO3 ; SULFURIHYDROGENIBIUM ; CRYSTALLIZATION ; MINERALIZATION |
| 语种 | 英语 |
| WOS记录号 | WOS:000395768100010 |
| 源URL | [http://ir.idsse.ac.cn/handle/183446/1827]  |
| 专题 | 深海科学研究部_深海极端环境模拟研究实验室 |
| 作者单位 | 1.Tongji Univ, State Key Lab Marine Geol, Shanghai 200092, Peoples R China 2.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Sanya 572000, Hainan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Qiao, Haijun,Xu, Hengchao,Jiang, Lei. Biomediated Precipitation of Calcium Carbonate in a Slightly Acidic Hot Spring, Yunnan Province[J]. ACTA GEOLOGICA SINICA-ENGLISH EDITION,2017,91(1):145-155. |
| APA | Qiao, Haijun,Xu, Hengchao,&Jiang, Lei.(2017).Biomediated Precipitation of Calcium Carbonate in a Slightly Acidic Hot Spring, Yunnan Province.ACTA GEOLOGICA SINICA-ENGLISH EDITION,91(1),145-155. |
| MLA | Qiao, Haijun,et al."Biomediated Precipitation of Calcium Carbonate in a Slightly Acidic Hot Spring, Yunnan Province".ACTA GEOLOGICA SINICA-ENGLISH EDITION 91.1(2017):145-155. |
入库方式： OAI收割
来源：深海科学与工程研究所
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