Adaptive shifts of bacterioplankton communities in response to nitrogen enrichment in a highly polluted river

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 中国科学院环境生物技术重点实验室

	Adaptive shifts of bacterioplankton communities in response to nitrogen enrichment in a highly polluted river
	Yang, Yuzhan ; Gao, Yangchun ; Huang, Xuena ; Ni, Ping ; Wu, Yueni ; Deng, Ye ; Zhan, Aibin
刊名	ENVIRONMENTAL POLLUTION
	2019-02-01
卷号	245 页码:290-299
关键词	Microbial community Adaptive shift Molecular ecological network Heavy nitrogen pollution Microbial interactions
ISSN号	0269-7491
英文摘要	Anthropogenic activity-mediated nutrient pollution, especially nitrogen enrichment, poses one of the major threats to river ecosystems. However, it remains unclear how and to which extent it affects aquatic microbial communities, especially in heavily polluted rivers. In this study, a significant environmental gradient, particularly nitrogen gradient, was observed along a wastewater receiving river, the North Canal River (NCR). The pollution level was highest, moderate, and lowest in the up-, middle, and clown streams, respectively. The community composition of bacterioplankton transitioned from being Betaproteobacteria-dominated upstream to Gammaproteobacteria-dominated downstream. Copiotrophic groups, such as Polynucleobacter (Betaproteobacteria) and Hydrogenophaga (Betaproteobacteria), were dominant in the upstream. Multiple statistical analyses indicated that total nitrogen (TN) was the most important factor driving the adaptive shifts of community structure. Analyses of co-occurrence networks showed that the complexity of networks was disrupted in the up- and middle streams, while enhanced in the downstream. Our findings here suggested that microbial interactions were reduced in response to the aggravation of nutrient pollution. Similar to these changes, we observed significant dissimilarity of composition of functional groups, with highest abundance of nitrogen metabolism members under the highest level of nitrogen enrichment. Further analyses indicated that most of these functional groups belonged to Betaproteobacteria, suggesting the potential coupling of community composition and function diversity. In summary, adaptive shifts of bacterioplankton community composition, as well as species interactions, occurred in response to nutrient pollution in highly polluted water bodies. (C) 2018 Elsevier Ltd. All rights reserved.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/43330]
专题	生态环境研究中心_中国科学院环境生物技术重点实验室
作者单位	1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, 18 Shuangqing Rd, Beijing 100085, Peoples R China 2.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Yang, Yuzhan,Gao, Yangchun,Huang, Xuena,et al. Adaptive shifts of bacterioplankton communities in response to nitrogen enrichment in a highly polluted river[J]. ENVIRONMENTAL POLLUTION,2019,245:290-299.
APA	Yang, Yuzhan.,Gao, Yangchun.,Huang, Xuena.,Ni, Ping.,Wu, Yueni.,...&Zhan, Aibin.(2019).Adaptive shifts of bacterioplankton communities in response to nitrogen enrichment in a highly polluted river.ENVIRONMENTAL POLLUTION,245,290-299.
MLA	Yang, Yuzhan,et al."Adaptive shifts of bacterioplankton communities in response to nitrogen enrichment in a highly polluted river".ENVIRONMENTAL POLLUTION 245(2019):290-299.