Bacterial diversity, composition and temporal-spatial variation in the sediment of Jiaozhou Bay, China |
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| Authors: | Xin Liu Tian Xiao Qingshan Luan Wenyan Zhang Mengqiang Wang Haidong Yue |
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| Institution: | (1) State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210093, China; |
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| Abstract: | Studies on the diversity and distribution of bacterial populations will improve the overall understanding of the global patterns
of marine bacteria and help to comprehend local biochemical processes and environments. We evaluated the composition and the
dynamics of bacterial communities in the sediment of Jiaozhou Bay (China) using PCR-denaturing gradient gel electrophoresis
(DGGE). Sediment samples were collected from 10 different sites in May, August, and November 2008 and in February 2009. There
was significant temporal variation in bacterial community composition at all sites. However, the spatial variation was very
small. The DGGE analyses of bacterial communities were used to divide the 10 stations into three types. Canonical correspondence
analysis (CCA) revealed that the changes in bacterial communities were driven by sediment properties. Sequence analysis of
DGGE band-derived 16S rRNA gene fragments revealed that the dominant bacterial groups in the sediment were of the classes
γ-proteobacteria and δ-proteobacteria and phyla Bacteroidetes and Nitrospirae. Our results provide considerable insight into
the bacterial community structure in Jiaozhou Bay, China. |
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