Depression of Groundwater Table and Reduced Nitrogen Application Jointly Regulate the Bacterial Composition of nirS-Type and nirK-Type Genes in Agricultural Soil

doi:10.3390/w12123459

	Depression of Groundwater Table and Reduced Nitrogen Application Jointly Regulate the Bacterial Composition of nirS-Type and nirK-Type Genes in Agricultural Soil
	Bai, Fangfang 2,5; Qi, Xuebin 1,2,3; Li, Ping 1,3; Qiao, Dongmei 2; Wang, Jianming 4; Du, Zhenjie 1; She, Yingjun 2,5; Guo, Wei 1,2; Lu, Hongfei 2
刊名	WATER
	2020-12-01
卷号	12 期号:12 页码:14
关键词	denitrifying bacteria groundwater table reduced nitrogen nirK-type and nirS-type genes cultivated soil
DOI	10.3390/w12123459
通讯作者	Qi, Xuebin(qxb6301@sina.cn)
英文摘要	Despite the known influence of nitrogen fertilization and groundwater conditions on soil microbial communities, the effects of their interactions on bacterial composition of denitrifier communities have been rarely quantified. Therefore, a large lysimeter experiment was conducted to examine how and to what extent groundwater table changes and reduced nitrogen application would influence the bacterial composition of nirK-type and nirS-type genes. The bacterial composition of nirK-type and nirS-type genes were compared at two levels of N input and three groundwater table levels. Our results demonstrated that depression of groundwater table, reduced nitrogen application and their interactions would lead to drastic shifts in the bacterial composition of nirS-type and nirK-type genes. Structural equation models (SEMs) indicated that depression of groundwater table and reduced nitrogen application not only directly altered the species composition of denitrifier bacterial communities, but also indirectly influenced them through regulating soil nutrient and salinity. Furthermore, the variation in soil NO3--N and electrical conductivity caused by depression of groundwater table and reduced nitrogen application played the most important role in altering the community composition of denitrifier bacterial communities. Together, our findings provide first-hand evidence that depression of groundwater table and reduced nitrogen application jointly regulate the species composition of denitrifier bacterial communities in agricultural soil. We highlight that local environmental conditions such as groundwater table and soil attributes should be taken into account to enrich our knowledge of the impact of nitrogen fertilization on soil denitrifier bacterial communities, or even biogeochemical cycles.
资助项目	Natural Science Foundation of China[51679241] ; Natural Science Foundation of China[51779260] ; Natural Science Foundation of China[51709265] ; Natural Science Foundation of China[51879268] ; Central Public-interest Scientific Institution Basal Research Fund[Y2020GH04] ; Agricultural Science and Technology Innovation Program[CAAS-ASTIP-2020] ; Science and Technology project of Henan Province[192102110051]
WOS关键词	SHALLOW-WATER TABLE ; N2O EMISSIONS ; BIOGEOGRAPHICAL DISTRIBUTION ; DENITRIFIER COMMUNITIES ; MICROBIAL COMMUNITIES ; GROWTH DYNAMICS ; ABUNDANCE ; REGION ; YIELD ; PRODUCTIVITY
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
语种	英语
出版者	MDPI
WOS记录号	WOS:000603502800001
资助机构	Natural Science Foundation of China ; Central Public-interest Scientific Institution Basal Research Fund ; Agricultural Science and Technology Innovation Program ; Science and Technology project of Henan Province
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/136559]
专题	中国科学院地理科学与资源研究所
通讯作者	Qi, Xuebin
作者单位	1.Minist Agr, Water Environm Factor Risk Assessment Lab Agr Pro, Xinxiang 453002, Henan, Peoples R China 2.Chinese Acad Agr Sci, Farmland Irrigat Res Inst, Xinxiang 453002, Henan, Peoples R China 3.Chinese Acad Agr Sci, Agr Water Soil Environm Field Res Stn Xinxiang, Xinxiang 453002, Henan, Peoples R China 4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China 5.Chinese Acad Agr Sci, Grad Sch, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Bai, Fangfang,Qi, Xuebin,Li, Ping,et al. Depression of Groundwater Table and Reduced Nitrogen Application Jointly Regulate the Bacterial Composition of nirS-Type and nirK-Type Genes in Agricultural Soil[J]. WATER,2020,12(12):14.
APA	Bai, Fangfang.,Qi, Xuebin.,Li, Ping.,Qiao, Dongmei.,Wang, Jianming.,...&Lu, Hongfei.(2020).Depression of Groundwater Table and Reduced Nitrogen Application Jointly Regulate the Bacterial Composition of nirS-Type and nirK-Type Genes in Agricultural Soil.WATER,12(12),14.
MLA	Bai, Fangfang,et al."Depression of Groundwater Table and Reduced Nitrogen Application Jointly Regulate the Bacterial Composition of nirS-Type and nirK-Type Genes in Agricultural Soil".WATER 12.12(2020):14.