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DOI	10.1093/femsec/fiac007
	Nitrite- and N2O-reducing bacteria respond differently to ecological factors in saline lakes
	Sun, Xiaoxi; Yang, Jian; Jiang, Hongchen; Wang, Beichen; Xiao, Haiyi; Xie, Zhanling; Han, Jinbin; Zhang, Xiying; Xu, Jianxin; Gong, Dafei; Zhang, Xuexia; Wang, Yaoyao
通讯作者	Jiang, HC (通讯作者)，China Univ Geosci, State Key Lab Biogeol & Environm Geol, Wuhan 430074, Peoples R China.
发表日期	2022
ISSN	0168-6496
EISSN	1574-6941
卷号	98 期号:2
英文摘要	The distribution of nitrite- and N2O-reducing bacteria is key to potential N2O emission from lakes. However, such information in highland saline lakes remains unknown. Here, we investigated the abundance and community composition of nitrite- and N2O-reducing bacteria in the sediments of six saline lakes on the Qing-Tibetan Plateau. The studied lakes covered a wide range of salinity (1.0-340.0 g/L). Results showed that in the studied saline lake sediments, nitrite-reducing bacteria were significantly more abundant than N2O-reducing bacteria, and their abundances ranged 7.14 x 10(3)-8.26 x 10(8) and 1.18 x 10(6)-6.51 x 10(7) copies per gram sediment (dry weight), respectively. Nitrite-reducing bacteria were mainly affiliated with alpha-, beta- and gamma-Proteobacteria, with beta- and alpha-Proteobacteria being dominant in low- and high-salinity lakes, respectively; N2O-reducing bacterial communities mainly consisted of Proteobacteria (alpha-, beta-, gamma- and delta-subgroups), Bacteroidetes, Verrucomicrobia, Actinobacteria, Chloroflexi, Gemmatimonadetes and Balneolaeota, with Proteobacteria and Bacteroidetes/Verrucomicrobia dominating in low- and high-salinity lakes, respectively. The nitrite- and N2O-reducing bacterial communities showed distinct responses to ecological factors, and they were mainly regulated by mineralogical and physicochemical factors, respectively. In response to salinity change, the community composition of nitrite-reducing bacteria was more stable than that of N2O-reducing bacteria. These findings suggest that nitrite- and N2O-reducing bacteria may prefer niches with different salinity. The abundance and community composition of nitrite- and N2O-reducing bacteria in saline lakes respond differently to salinity, indicating that they occupy niches with different salinity.
关键词	NITROUS-OXIDE N2O MICROBIAL COMMUNITY DIVERSITY ESTUARINE SEDIMENTS DENITRIFICATION GRADIENT WATER NIRS REMOVAL
英文关键词	Qing-Tibetan Plateau; nitrite-reducing bacteria; N2O-reducing bacteria; salinity; nosZ-II
语种	英语
WOS研究方向	Microbiology
WOS类目	Microbiology
WOS记录号	WOS:000765909900004
来源期刊	FEMS MICROBIOLOGY ECOLOGY
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/255029
作者单位	[Sun, Xiaoxi; Yang, Jian; Jiang, Hongchen; Wang, Beichen] China Univ Geosci, State Key Lab Biogeol & Environm Geol, Wuhan 430074, Peoples R China; [Jiang, Hongchen] Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi 830011, Peoples R China; [Xiao, Haiyi] China Univ Geosci, Fac Mat Sci & Chem, Wuhan 430074, Peoples R China; [Xie, Zhanling] Qinghai Univ, Coll Ecol Environm Engn, Xining 810016, Peoples R China; [Han, Jinbin; Zhang, Xiying; Xu, Jianxin] Chinese Acad Sci, Key Lab Salt Lake Geol & Environm Qinghai Prov, Qinghai Inst Salt Lakes, Northwest Inst Ecoenvironm & Resources, Xining 810008, Peoples R China; [Gong, Dafei; Zhang, Xuexia; Wang, Yaoyao] North China Pharmaceut Grp Corp, Natl Engn Res Ctr Microbial Med, Hebei Ind Microbial Metab Engn & Technol Res Ctr, Beijing 050000, Peoples R China
推荐引用方式 GB/T 7714	Sun, Xiaoxi,Yang, Jian,Jiang, Hongchen,et al. Nitrite- and N2O-reducing bacteria respond differently to ecological factors in saline lakes[J]. 中国科学院西北生态环境资源研究院,2022,98(2).
APA	Sun, Xiaoxi.,Yang, Jian.,Jiang, Hongchen.,Wang, Beichen.,Xiao, Haiyi.,...&Wang, Yaoyao.(2022).Nitrite- and N2O-reducing bacteria respond differently to ecological factors in saline lakes.FEMS MICROBIOLOGY ECOLOGY,98(2).
MLA	Sun, Xiaoxi,et al."Nitrite- and N2O-reducing bacteria respond differently to ecological factors in saline lakes".FEMS MICROBIOLOGY ECOLOGY 98.2(2022).