The distribution of mangrove bacteria in intertidal surface sediments of the Beilun estuary
XIONG Xiao-fei1, WANG Xin2, ZHOU Hao-lang2, WU Peng1
1. South China Sea Environmental Monitoring Center, State Oceanic Administration, Guangzhou 510300, China;
2. Guangxi Mangrove Research Center, Beihai 536000, China
Abstract：The mangrove bacterial composition in three intertidal zones (low, mid, high) of Beilun estuary, China was investigated by high throughput DNA pyrosequencing of the 16S rRNA gene. The results demonstrated that bacterial communities in mangrove sediments of Beilun estuary were highly diverse. Shannon index of microbial diversity from the different intertidal zones ranged from 10.2 to 10.4. Phylogenetic analysis showed that bacterial communities from mangrove sediments were dominated by Proteobacteria, followed by Chloroflexi, Bacteroidetes, Planctomycetes and Acidobacteria. Venn diagram of OTUs distribution suggested that bacterial composition from the different intertidal zones displayed a high similarity. However, heat map and ternary plot demonstrated that each intertidal zone was inhabited by specia l dominant bacterial groups. Pyrosequencing also indicated that some potential bacteria from mangrove played an important role in organic pollutant transformation and biogeochemical transformation.
XIONG Xiao-fei,WANG Xin,ZHOU Hao-lang et al. The distribution of mangrove bacteria in intertidal surface sediments of the Beilun estuary[J]. Marine Environmental Science, 2018, 37(1): 101-106.
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