Linking abundance and community of microbial N2O-producers and N2O-reducers with enzymatic N2O production potential in a riparian zone

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 中国科学院饮用水科学与技术重点实验室

	Linking abundance and community of microbial N2O-producers and N2O-reducers with enzymatic N2O production potential in a riparian zone
	Zhu, Guibing; Yuan, Dongdan; Zhou, Jiemin; Wang, Qing; Zhao, Siyan
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2018-11-15
卷号	642 页码:1090-1099
关键词	N2O-producers N2O-reducers N2O emission Riparian zone
ISSN号	0048-9697
文献子类	Article
英文摘要	As aquatic-terrestrial ecotones, riparian zones are hotspots not only for denitrification but also for nitrous oxide (N2O) emission. Due to the potential role of nosZ II in N2O mitigation, emerging studies in terrestrial ecosystems have taken this newly reported N2O-reducer into account. However, our knowledge about the interactions between denitrification activities and both N2O-producers and reducers (especially for nosZ II) in aquatic ecosystems remains limited. In this study, we investigated spatiotemporal distributions of in situ N2O flux, potential N2O production rate, and potential denitrification rate, as well as of the related genes in a riparian zone of Baiyangdian Lake. Real-time quantitative PCR (qPCR) and high-throughput sequencing targeted functional genes were used to analyze the denitrifier communities. Results showed that great differences in microbial activities and abundances were observed between sites and seasons. Waterward sediments (constantly flooded area) had the lowest N2O production potential in both seasons. Not only the environmental factors (moisture content, NH4+ content and TOM) but also the community structure of N2O-producers and N2O-reducers (rtirK/nirS and nosZ II/nosZ I ratios) could affect the potential N2O production rate. The abundance of the four functional genes in the winter was higher than in the summer, and the values all peaked at the occasionally flooded area in the winter. The dissimilarity in community composition was mainly driven by moisture content. Altogether, we propose that the N2O production potential was largely regulated by the community structure of N2O-producers and N2O-reducers in riparian zones. Increasing the constantly flooded area and reducing the occasion- ally flooded area of lake ecosystems may help reduce the level of denitrifler-produced N2O. (C) 2018 Published by Elsevier B.V.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/41383]
专题	生态环境研究中心_中国科学院饮用水科学与技术重点实验室
推荐引用方式 GB/T 7714	Zhu, Guibing,Yuan, Dongdan,Zhou, Jiemin,et al. Linking abundance and community of microbial N2O-producers and N2O-reducers with enzymatic N2O production potential in a riparian zone[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2018,642:1090-1099.
APA	Zhu, Guibing,Yuan, Dongdan,Zhou, Jiemin,Wang, Qing,&Zhao, Siyan.(2018).Linking abundance and community of microbial N2O-producers and N2O-reducers with enzymatic N2O production potential in a riparian zone.SCIENCE OF THE TOTAL ENVIRONMENT,642,1090-1099.
MLA	Zhu, Guibing,et al."Linking abundance and community of microbial N2O-producers and N2O-reducers with enzymatic N2O production potential in a riparian zone".SCIENCE OF THE TOTAL ENVIRONMENT 642(2018):1090-1099.