东篱科研大数据发现系统（DRDS）

位置：成果数据库 > 期刊 > 期刊详情页

Biomineralization of phototrophic microbes in silica-enriched hot springs in South China

ISSN号：1001-6538
期刊名称：科学通报(英文版)
时间：0
页码：367-379
语言：中文
分类：P314.1[天文地球—固体地球物理学;天文地球—地球物理学] P593[天文地球—地球化学;天文地球—地质学]
作者机构：[1]Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
相关基金：Supported by the National Natural Science Foundation of China （Grant Nos. 40532011, 40403004 and 40473032）, the Important Direction Project of Knowledge Innovation Program of the Chinese Academy of Sciences （Grant No.KZCX3-SW- 223）, the C0MRA Project （Grant No. DY105-02-10） and the Doctor Startup Foundation of Guangdong Province （Grant No.04300763）.Special thanks go to Dr. Yiliang Li of University of Georgia, USA, and two anonymous reviewers for the valuable suggestions.
相关项目：胡安·德富卡洋脊Endeavour段热液生态环境变化与地球化学制约机理研究

关键词：华南地区, 富硅温泉, 光养微生物, 生物矿化作用, 藻青菌, hot spring, microbial mats, cyanobacteria, EPS, sheath, biomineralization.

中文摘要：

在在华南的二个温泉的微生物引起的地席被地质学和现代生物学的方法为微生物和它的机制的矿化作用的研究取样。结果证明温泉微生物为 Si，艾尔， Fe， Ca 和其它元素，和微生物的丰富有关键能力为 SiO_2 的形成也是关键的， CaCO_3，泥土等等。细胞外的聚合物质(EPS ) 在温泉微生物的矿化作用的过程起重要作用，它主要发生在 EPS 外面的房间墙或 cyanobacteria 的鞘的层。鞘外面房间墙，在它的表面上在矿化作用的过程期间把正常新陈代谢作为 ofcyanobacteria，为 cyanobacteria 的 thebiomineralization 也是可观的。根据结构和二微生物引起的地席的矿化作用特征，也就是，矿化作用的过程能早被划分成三个阶段矿物质的表面矿化作用，中间的降级矿化作用，和迟了的脱落。Theabove 结论为矿化作用，免职的过程和在现代、古老的极端环境的微化石的保藏的过程的理解是重要的。

英文摘要：

Microbial mats in two hot springs in South China were sampled for the research of mineralization of microbes and its mechanism by the methods of geology and modern biology. The results show that hot spring microbes have the key capability for enrichment of Si, Al, Fe, Ca and other elements, and the microbes are also crucial for the formation of SiO2, CaCO3, clay and so on. The extracellular polymeric substances （EPS） play important roles in the process of mineralization of hot spring microbes, which mainly takes place in the layer of EPS outside cell wall or sheath of cyanobacteria. The sheath outside cell wall, which keeps the normal metabolism of cyanobacteria during the process of mineralization on its surface, is also considerable for the biomineralization of cyanobacteria. According to structure and mineralization characteristics of two microbial mats, the process of mineralization can be divided into three stages, namely, early surface mineralization, middle degradation mineralization, and late desquamation of mineral. The above conclusions are significant for comprehension of the process of mineralization, the process of deposition and the preservation of microfossil in modern and ancient extreme environments.

同期刊论文项目