| LI Yan,LIU Qun,LI Chaolun,DONG Yi,ZHANG Wenyan,ZHANG Wuchang,XIAO Tian. 2015. Bacterial and archaeal community structures in the Arctic deep-sea sediment. Acta Oceanologica Sinica, 34(2):93－113 |
| Bacterial and archaeal community structures in the Arctic deep-sea sediment |
| 北极深海沉积物中细菌和古菌群落结构研究 |
| Received:March 03, 2014 Revised:July 18, 2014 |
| DOI：10.1007/s13131-015-0624-9 |
| Key words:Arctic deep-sea sediment microbial community structure pyrosequencing |
| 中文关键词: 北极 深海沉积物 微生物群落结构 第二代基因组测序 |
| 基金项目:The National Natural Science Foundation of China under contract No. 41121064; the NSFC-Shandong Joint Fund for Marine Science Research Centers under contract No. U1406403; the Science Foundation for Post Doctorate Research from the Chinese Academy of Sciences under contract No. 2012M511072. |
| Author Name | Affiliation | E-mail | | LI Yan | Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
Center for Transport Phenomena, Energy Research Institute, Shandong Academy of Sciences, Jinan 250014, China | | | LIU Qun | State Field Research Station of Jiaozhou Bay Marine Ecology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China | | | LI Chaolun | Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China | | | DONG Yi | Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China | | | ZHANG Wenyan | Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China | | | ZHANG Wuchang | Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China | | | XIAO Tian | Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China | txiao@qdio.ac.cn |
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| Abstract: |
| Microbial community structures in the Arctic deep-sea sedimentary ecosystem are determined by organic matter input, energy availability, and other environmental factors. However, global warming and earlier ice-cover melting are affecting the microbial diversity. To characterize the Arctic deep-sea sediment microbial diversity and its rela-tionship with environmental factors, we applied Roche 454 sequencing of 16S rDNA amplicons from Arctic deep-sea sediment sample. Both bacterial and archaeal communities' richness, compositions and structures as well as tax-onomic and phylogenetic affiliations of identified clades were characterized. Phylotypes relating to sulfur reduction and chemoorganotrophic lifestyle are major groups in the bacterial groups; while the archaeal community is domi-nated by phylotypes most closely related to the ammonia-oxidizing Thaumarchaeota (96.66%) and methanogenic Euryarchaeota (3.21%). This study describes the microbial diversity in the Arctic deep marine sediment (>3 500 m) near the North Pole and would lay foundation for future functional analysis on microbial metabolic processes and pathways predictions in similar environments. |
| 中文摘要: |
| 在北极深海沉积物生态系统中,微生物的群落结构由有机质输入、能量的可用性及其他环境因素决定.然而,全球气候变暖及其导致的冰盖提前融化正在影响微生物的多样性.为描述北极深海沉积物中的微生物群落结构及其与环境因素的相关性,我们利用罗氏454对北极深海沉积物样品的16S rDNA扩增子进行了测序,对细菌和古菌群落的丰富度、成分、结构及其系统发育分类地位进行了描述.硫还原和化能有机营养类是细菌群落中的主要类群;而古细菌群落主要是由微生物的关系最为密切的氨氧化奇古菌门(96.66%)和产甲烷古生菌界(3.21%).这项研究描述了北极极点附近深海沉积物(> 3500米)中的微生物多样性,将为以后研究类似环境中微生物代谢过程和途径等功能分析奠定基础. |
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