Bacterial and archaeal community structures in the Arctic deep-sea sediment

LI Yan; LIU Qun; LI Chaolun; DONG Yi; ZHANG Wenyan; ZHANG Wuchang; XIAO Tian

doi:10.1007/s13131-015-0624-9

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Article Navigation > Acta Oceanologica Sinica > 2015 > 34(2): 93-113

LI Yan, LIU Qun, LI Chaolun, DONG Yi, ZHANG Wenyan, ZHANG Wuchang, XIAO Tian. Bacterial and archaeal community structures in the Arctic deep-sea sediment[J]. Acta Oceanologica Sinica, 2015, 34(2): 93-113. doi: 10.1007/s13131-015-0624-9

Citation:

LI Yan, LIU Qun, LI Chaolun, DONG Yi, ZHANG Wenyan, ZHANG Wuchang, XIAO Tian. Bacterial and archaeal community structures in the Arctic deep-sea sediment[J]. Acta Oceanologica Sinica, 2015, 34(2): 93-113. doi: 10.1007/s13131-015-0624-9

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Bacterial and archaeal community structures in the Arctic deep-sea sediment

doi: 10.1007/s13131-015-0624-9

1.
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
2.
State Field Research Station of Jiaozhou Bay Marine Ecology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
3.
Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China

Received Date: 2014-03-03
Rev Recd Date: 2014-07-18

Abstract

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.
- Arctic,
- deep-sea sediment,
- microbial community structure,
- pyrosequencing

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References(36)

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