Spatial diversity of bacterioplankton communities in surface water of northern South China Sea.
Spatial diversity of bacterioplankton communities in surface water of northern South China Sea.
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DOI：
10.1371/journal.pone.0113014
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发表时间：
2014
期刊：
影响因子：
3.7
通讯作者：
Wang G
中科院分区：
文献类型：
--
作者：
Li J;Li N;Li F;Zou T;Yu S;Wang Y;Qin S;Wang G
南海是热带西太平洋最大的边缘海之一，涡流通过较为频繁，空间变化明显。在这里，我们报告了南海北部表层海水（nSCS）细菌群落结构的系统发育研究。从大环境梯度的 31 个位点收集的样本用于构建克隆文库，并产生了 2,443 个序列，分为 170 个 OTU。系统发育分析揭示了 23 个细菌类别，主要成分为 α-、β- 和 γ-变形菌门以及蓝藻菌门。在类群和属类水平上，沿海水域的群落结构与深海水域的群落结构存在明显差异，并表现出较高的多样性指数。冗余分析表明，细菌群落结构与各个采样点的水深存在显着相关性。 α-变形菌门成员是造成克隆文库差异的主要成分。此外，细菌群落在上升流和反气旋涡流区域内表现出异质性。我们的研究结果表明，南海表面细菌群落具有由生态类型（沿海区与海洋区）和中尺度物理过程构成的两级空间分布模式，也为由生态偏好形成的细菌系统发育门提供了证据。
The South China Sea is one of the largest marginal seas, with relatively frequent passage of eddies and featuring distinct spatial variation in the western tropical Pacific Ocean. Here, we report a phylogenetic study of bacterial community structures in surface seawater of the northern South China Sea (nSCS). Samples collected from 31 sites across large environmental gradients were used to construct clone libraries and yielded 2,443 sequences grouped into 170 OTUs. Phylogenetic analysis revealed 23 bacterial classes with major components α-, β- and γ-Proteobacteria, as well as Cyanobacteria. At class and genus taxon levels, community structure of coastal waters was distinctively different from that of deep-sea waters and displayed a higher diversity index. Redundancy analyses revealed that bacterial community structures displayed a significant correlation with the water depth of individual sampling sites. Members of α-Proteobacteria were the principal component contributing to the differences of the clone libraries. Furthermore, the bacterial communities exhibited heterogeneity within zones of upwelling and anticyclonic eddies. Our results suggested that surface bacterial communities in nSCS had two-level patterns of spatial distribution structured by ecological types (coastal VS. oceanic zones) and mesoscale physical processes, and also provided evidence for bacterial phylogenetic phyla shaped by ecological preferences.
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影响因子：
3
作者：
Chen, CTA;Wang, SL;Pai, SC
通讯作者：
Pai, SC
影响因子：
4.4
作者：
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通讯作者：
Kirchman, DL
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11
作者：
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通讯作者：
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影响因子：
3.6
作者：
Ducet, N;Le Traon, PY;Reverdin, G
通讯作者：
Reverdin, G
影响因子：
11
作者：
Lai, Xintian;Cao, Lixiang;Zhou, Shining
通讯作者：
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