Microbial Community Diversity and Vertical Distribution in a Columnar Sediment of Maluku Strait  

作　　者：Yan Wang Fuchao Li Jin Zhao Huaxin Chen Peng Jiang Xuexi Tang 

机构地区：[1]College of Marine Life Science,Ocean University of China,Qingdao 266100,China [2]Key Laboratory of Experimental Marine Biology,Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China [3]Laboratory for Marine Biology and Biotechnology,Qingdao National Laboratory for Marine Science and Technology,Qingdao 266071,China

出　　处：《Journal of Atmospheric Science Research》2019年第2期51-58,共8页大气科学研究（英文）

基　　金：the Strategic Priority Research Program of the Chinese Academy of Sciences (XDA11030404);the National High Technology Research and Development Program of China (2012AA092103);National Natural Science Foundation of China (31300365);the Knowledge Innovation Project of the Chinese Academy of Sciences (KZCX2-YWJC201);the Open Project Program of the Key Laboratory of Marine Bio-resources Sustainable Utilization, SCSIO,CAS (LMB121006);the Scientific and Technological Innovation Project financially supported by Qingdao National Laboratory for Marine Science and Technology (2015ASKJ02).

摘　　要：The sediment samples were collected from Maluku Strait at a depth of 1250 m, which is influenced by Mindanao Current and Indonesian Throughflow. Based on 16S rRNA clone libraries, the community structure and vertical distribution of archaea and bacteria were studied in a columnar sediment of 2m in length. From the surface sediment, 16S sequences were derived from fourteen bacterial phyla (Gammaproteobacteria, Planctomycetes, Alphaproteobacteria, Deltproteobacteria were dominant), but were limited to two groups of archaea: Crenarchaeota (99%) and Euryarchaeota (1%). Besides, 90% of the archaea clones were ammonia oxidation-related which indicated that the ammonia-oxidizing archaea might make a significant contribution to the chemosynthesis in the surface sediment. Contrastively in the bottom sediment, six bacterial phylogenetic groups were obtained (Gammaproteobacteria and Firmicutes were absolutely dominant), however no archaea 16S rRNA was detected. The microbial diversity of surface sediment was much higher than the bottom and seven unique bacterial phyla were obtained from two sediment respectively. The geochemical elements analysis revealed that the content of C, TOC and S in the surface sediment was much higher than the bottom, but the content of P is contrary. The microbial communities might be in response to the geochemical substance transfer and deposit influenced by the ocean current and it deserves further study compared with the other sediment samples in this area.

关 键 词：Maluku STRAIT SEDIMENT 16S RRNA MICROBIAL COMMUNITY Spatial distribution 

分 类 号：O4[理学—物理]