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

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

doi: 10.1007/s13131-015-0624-9
  • Received Date: 2014-03-03
  • Rev Recd Date: 2014-07-18
  • 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.
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