Metagenomics reveals elevated temperature causes nitrogen accumulation mainly by inhibiting nitrate reduction process in polluted water

	Metagenomics reveals elevated temperature causes nitrogen accumulation mainly by inhibiting nitrate reduction process in polluted water
	Yang, Jiawei; Yu, Qiaoling; Su, Wanghong; Wang, Sijie; Wang, Xiaochen; Han, Qian; Qu, Jiapeng; Li, Huan
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2023
卷号	882
英文摘要	Determining the response of functional genes and microbiota involved in the nitrogen (N) cycle to warming in the face of global climate change is a hotpot topic. However, whether and how elevated temperature affects the N-cycle genes in polluted water remains unclear. Based on metagenomics, we investigated the responses of the whole N-cycling genes and their microbial communities to the temperature gradients (23, 26, 29, 32, and 35 degrees C) using animal cadavers as an N-pollution model. We found that the abundance of gene families involved in glutamate metabolism, assimilatory nitrate reduction to nitrite (ANRN), and denitrification pathways decreased with temperature. Moreover, warming reduced the diversity of N-cycling microbial communities. Ecological network analysis indicated that elevated temperature intensified the mutual competition of N-cycle genes. The partial least squares path model (PLS-PM) showed that warming directly suppressed most N-cycle pathways, especially glutamate metabolism, denitrification, and ANRN pathways. Corpse decay also indirectly inhibited N-cycling via regulating N content and microbial communities. Our results highlight warming leads to N accumulation by inhibiting the ANRN and denitrification pathways, which may jeopardize ecological environment security. Our study is expected to provide valuable insights into the complex N-cycle process and N-pollution in warmer aquatic ecosystems.
内容类型	期刊论文
源URL	[http://210.75.249.4/handle/363003/61656]
专题	西北高原生物研究所_中国科学院西北高原生物研究所
推荐引用方式 GB/T 7714	Yang, Jiawei,Yu, Qiaoling,Su, Wanghong,et al. Metagenomics reveals elevated temperature causes nitrogen accumulation mainly by inhibiting nitrate reduction process in polluted water[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2023,882.
APA	Yang, Jiawei.,Yu, Qiaoling.,Su, Wanghong.,Wang, Sijie.,Wang, Xiaochen.,...&Li, Huan.(2023).Metagenomics reveals elevated temperature causes nitrogen accumulation mainly by inhibiting nitrate reduction process in polluted water.SCIENCE OF THE TOTAL ENVIRONMENT,882.
MLA	Yang, Jiawei,et al."Metagenomics reveals elevated temperature causes nitrogen accumulation mainly by inhibiting nitrate reduction process in polluted water".SCIENCE OF THE TOTAL ENVIRONMENT 882(2023).