Spatial Variability and Co-acclimation of Phytoplankton and Bacterioplankton Communities in the Pearl River Estuary, China.
Spatial Variability and Co-acclimation of Phytoplankton and Bacterioplankton Communities in the Pearl River Estuary, China.
复制标题
中国珠江口浮游植物和浮游细菌群落的空间变异和协同驯化
DOI：
10.3389/fmicb.2018.02503
复制
发表时间：
2018
影响因子：
5.2
通讯作者：
Wang H
中科院分区：
文献类型：
--
作者：
Zhu J;Hong Y;Zada S;Hu Z;Wang H
浮游植物和浮游细菌在河口系统中起着重要作用。必须证明细菌和微藻群落的空间变异性，并了解这些生物对不同环境因素的共适应。本研究采用MiSeq测序技术和形态学鉴定技术分别分析了珠江口海域细菌和微藻群落的变化。利用分子生态网络分析方法研究了微藻和细菌之间的相互作用，并阐明了这些相互作用对环境梯度的响应。结果表明，微藻/细菌群落在淡水样品中的不同，在中盐水样。中盐水域浮游植物群落以短丝藻属的微藻为主，而淡水浮游植物群落中直链藻属的数量较多。放线菌，Alphaproteobacteria，Betaproteobacteria，和Acidimicrobiia占主导地位的细菌群落在淡水样品中，而Gammaproteobacteria，芽孢杆菌，和Synechococcophycideae更丰富的中盐水样。浮游植物和浮游细菌之间的密切相关性。这些互动被认为是塑造社区结构的关键因素。利用KEGG数据库和PICRUSt预测了浮游细菌在氮循环过程中的作用。结果表明，反硝化作用在氮素流失中起着重要作用，对缓解珠江口富营养化具有重要意义。研究结果表明，珠江口浮游植物和浮游细菌群落的显著变化与环境参数的梯度相关。研究结果还表明，浮游植物和浮游细菌之间的相互作用是重要的，这些生物适应不断变化的环境。
Phytoplankton and bacterioplankton play significant roles in estuarine systems. It is important to demonstrate the spatial variability of bacterial and microalgal communities and understand the co-acclimation of these organisms to different environmental factors. In this study, MiSeq sequencing and morphological identification were applied to analyze the variations in bacterial and microalgal communities in the Pearl River Estuary, respectively. Molecular ecological network analysis was used to investigate the potential interactions between microalgae and bacteria and illustrate the responses of these interactions to environmental gradients. The results revealed that microalgal/bacterial communities in freshwater samples were distinct from those in mesohaline water samples. Microalgae affiliated to the genus Skeletonema dominated the mesohaline water phytoplankton communities, while Melosira was the more abundant genus in freshwater communities. Actinobacteria, Alphaproteobacteria, Betaproteobacteria, and Acidimicrobiia dominated bacterial communities in freshwater samples, while Gammaproteobacteria, Bacilli, and Synechococcophycideae were more abundant in mesohaline water samples. Tightly correlations were observed between phytoplankton and bacterioplankton. These interactions were regarded to be key factors in shaping the community structures. Further, the KEGG database and PICRUSt were used to predict the functions of bacterioplankton in the process of nitrogen cycling. The results indicated that denitrification could play an important role in nitrogen loss and might alleviate the eutrophication in the Pearl River Estuary. Collectively, the results in this study revealed that substantial changes in phytoplankton and bacterioplankton communities were correlated with the gradients of environmental parameters in the Pearl River Estuary. The results also demonstrated that the interactions between phytoplankton and bacterioplankton were important for these organisms to acclimate to changing environments.
登录
查看更多内容
影响因子：
4
作者：
Howarth, RW;Billen, G;Zhu, ZL
通讯作者：
Zhu, ZL
影响因子：
56.9
作者：
Azam, F
通讯作者：
Azam, F
影响因子：
5.1
作者：
Coates, Christopher J.;Wyman, Michael
通讯作者：
Wyman, Michael
DOI：
10.1099/00207713-51-3-999
发表时间：
2001-05-01
影响因子：
2.8
作者：
Gumaelius, L;Magnusson, G;Dalhammar, G
通讯作者：
Dalhammar, G
影响因子：
4.4
作者：
Crump, BC;Hopkinson, CS;Hobbie, JE
通讯作者：
Hobbie, JE