Bacterial diversity in sediments of core MD05-2902 from the Xisha Trough, the South China Sea
Bacterial diversity in sediments of core MD05-2902 from the Xisha Trough, the South China Sea
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DOI：
10.1007/s13131-014-0543-1
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发表时间：
2014-10-01
影响因子：
1.4
通讯作者：
Wang Peng
中科院分区：
文献类型：
--
作者：
Li Tao;Wang Peng
对西沙海槽深海盆地的MD 05 -2902柱状沉积物进行了分析。以细菌16 S rRNA基因为系统发育生物标记，采用10个采样点，每隔1 m取样1次，研究了柱状样中细菌的垂直分布和多样性。从16 S rRNA基因克隆文库中鉴定出18个系统发育群。优势菌群为JS 1、浮游菌和绿球藻，分别占文库中细菌克隆的30.6%、16.6%和15.6%。为了揭示生物和非生物数据之间的关系，进行了非度量多维尺度分析。结果表明，δ N-15、δ C-13、总有机碳和总有机氮可能影响细菌群落结构。该研究扩展了对西沙海槽沉积物中地球化学循环的认识。
A sediment core MD05-2902 was collected from the deep-sea basin of the Xisha Trough. The vertical distribution and diversity of bacteria in the core was investigated through ten sub-sampling with an interval of 1 m using bacterial 16S rRNA gene as a phylogenetic bio-marker. Eighteen phylogenetic groups were identified from 16S rRNA gene clone libraries. The dominant bacterial groups were JS1, Planctomycetes and Chloroflexi, which accounted for 30.6%, 16.6%, and 15.6% of bacterial clones in the libraries, respectively. In order to reveal the relationship between biotic and abiotic data, a nonmetric multidimensional scaling analysis was performed. The result revealed that the delta N-15, delta C-13, total organic carbon and total organic nitrogen possibly influenced the bacterial community structure. This study expanded our knowledge of the biogeochemical cycling in the Xisha Trough sediment.