Bacterial Variability within an Iron-Silica-Manganese-rich Hydrothermal Mound Located Off-axis at the Cleft Segment, Juan de Fuca Ridge
Bacterial Variability within an Iron-Silica-Manganese-rich Hydrothermal Mound Located Off-axis at the Cleft Segment, Juan de Fuca Ridge
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DOI：
10.1080/01490450902889080
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发表时间：
2009-01-01
影响因子：
2.3
通讯作者：
Moyer, Craig L.
中科院分区：
文献类型：
--
作者：
Davis, Richard E.;Stakes, Debra S.;Moyer, Craig L.
终端限制性片段长度多态性（T-RFLPs）和传统的克隆库分析被用来确定和评估的空间变异的微生物群落内的一个活跃的扩散通风热液丘发现4公里的轴外的裂缝段，胡安德FucaRidge。T-RFLP指纹产生从三个子样品取自不同深度的沉积物芯。在所提出的方法下，顶部和中心子样本主要由两类聚类所支配。zeta-变形菌门。核心的底部占主导地位的三角洲变形菌门内的Nitrospina组中的一个Nitrospina型聚类。聚类分析的T-RFLP指纹中心的核心显示了类似的社区结构与铁为主的微生物垫社区收集从西北Eifuku海山马里亚纳岛弧和Loihi海山，夏威夷。我们的研究表明，离轴扩散热液活动产生的微生物群落，可能会影响他们的栖息地，通过差异沉淀的铁，硅，锰丰富的存款。
Terminal-restriction fragment length polymorphisms (T-RFLPs) and traditional clone library analysis were used to identify and assess the spatial variability of microbial communities within an active diffusely venting hydrothermal mound found 4 km off-axis at the Cleft Segment, Juan de FucaRidge. T-RFLP fingerprints were generated from three subsamples taken from different depths of a sediment core. The top and center subsamples were dominated by phylotypes clustering with the proposed. zeta-Proteobacteria. The bottom of the core was dominated by a phylotype clustering in the Nitrospina group within the delta-Proteobacteria. Cluster analysis of T-RFLP fingerprints from the center of the core shows a similar community structure with those from iron-dominated microbial mat communities collected from NW Eifuku Seamount in the Mariana Island Arc and from Loihi Seamount, Hawaii. Our study demonstrates that off-axis diffuse hydrothermal activity generates microbial communities that can potentially affect their habitat through the differential precipitation of Fe-, Si-, and Mn-rich deposits.