Biomediated Precipitation of Calcium Carbonate in a Slightly Acidic Hot Spring, Yunnan Province
Jiang, Lei1; Xu, Hengchao1; Qiao, Haijun2
2017-02-01
发表期刊ACTA GEOLOGICA SINICA-ENGLISH EDITION
卷号91期号:1页码:145-155
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.
文章类型Article
关键词Bio-mediated Calcium Carbonate Slightly Acidic Hot Spring Yunnan Province
WOS标题词Science & Technology ; Physical Sciences
DOI10.1111/1755-6724.13068
收录类别SCI
语种英语
关键词[WOS]YELLOWSTONE-NATIONAL-PARK ; REHAI GEOTHERMAL-FIELD ; SOUTHWESTERN CHINA ; MICROBIAL MATS ; SP-NOV. ; BIOFILMS ; CACO3 ; SULFURIHYDROGENIBIUM ; CRYSTALLIZATION ; MINERALIZATION
WOS类目Geosciences, Multidisciplinary
WOS记录号WOS:000395768100010
引用统计
文献类型期刊论文
条目标识符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.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Sanya 572000, Hainan, Peoples R China
2.Tongji Univ, State Key Lab Marine Geol, Shanghai 200092, Peoples R China
第一作者单位中国科学院深海科学与工程研究所
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Jiang, Lei,Xu, Hengchao,Qiao, Haijun. 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 Jiang, Lei,Xu, Hengchao,&Qiao, Haijun.(2017).Biomediated Precipitation of Calcium Carbonate in a Slightly Acidic Hot Spring, Yunnan Province.ACTA GEOLOGICA SINICA-ENGLISH EDITION,91(1),145-155.
MLA Jiang, Lei,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.
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