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Arbuscular mycorrhizal fungi alleviate erosional soil nitrogen loss by regulating nitrogen cycling genes and enzymes in experimental agro-ecosystems

文献类型：期刊论文

作者Gou, Xiaomei3,5,6; Hu, Yaxian4,5,6; Ni, Huaqian4; Wang, Xiang2,4; Qiu, Liping4,5,6; Chang, Xingchen4; Shao, Mingan3,4,6; Wei, Gehong1,4,6; Wei, Xiaorong1,3,4,6
刊名SCIENCE OF THE TOTAL ENVIRONMENT
出版日期2024
卷号906页码:11
ISSN号0048-9697
关键词AM fungi Simulating erosion Soil nitrogen cycling gene Enzyme Nitrogen uptake Nitrogen loss
DOI10.1016/j.scitotenv.2023.167425
通讯作者Wei, Gehong(weigehong@nwafu.edu.cn) ; Wei, Xiaorong(weixr@nwsuaf.edu.cn)
英文摘要Nutrient losses from agricultural ecosystems are increasingly threatening global environmental and human health. Although arbuscular mycorrhizal (AM) fungi have the potential to regulate soil nitrogen (N) loss by enhancing plant uptake and soil particle immobilization, the microbial mechanism behind such mycorrhizal effect is unknown. Herein, by conducting a simulated erosion experiment, we compared the effects of exogenous AM fungal inoculation (Funneliformis mosseae) on the gene abundances and enzyme activities of N-cycling processes, and associated such effect to N uptake and loss. The experiment was composed of combinations of two AM fungal treatments (control vs. AM fungal inoculation), two crops (maize vs. soybean) and two slopes of the plots (6 degrees vs. 20 degrees). The experimental plots subjected to natural rainfalls to simulate the erosion events. We showed that the effects of AM fungi were greater in the maize soils than in the soybean soils. In the maize soils, AM fungi increased the abundances of N-fixing (+81.1 %) and nitrifying genes (+200.7 %) and N cycling enzyme activity (+22.3 %). In the soybean soils, AM fungi increased the N-fixing gene abundance (+36.9 %) but decreased the abundance of nitrifying genes (18.9 %). The abundance of N-fixing gene was positively correlated with N uptake but negatively correlated with N loss. Additionally, AM fungi enhanced the effects of mycorrhizal colonization and moisture but decreased the effects of nutrients on soil microbial metrics related to N-cycling processes. Therefore, AM fungal inoculation enhanced N uptake and reduced N loss by increasing N-fixing gene abundance, and that AM fungi should be preferably used for the low N environments or for the ecosystems highly limited by or competing for N.
WOS关键词LOESS PLATEAU ; LAND-USE ; PLANT ; COMMUNITY ; L. ; DECOMPOSITION ; BACTERIA ; MICROORGANISMS ; FERTILIZATION ; ABUNDANCE
资助项目National Natural Science Foundation of China[42277349] ; National Natural Science Foundation of China[41977068] ; National Natural Science Foundation of China[41977105] ; National Key Research and Development Program[2022YFF1302804] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA23070202] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB40020000]
WOS研究方向Environmental Sciences & Ecology
语种英语
出版者ELSEVIER
WOS记录号WOS:001086979400001
资助机构National Natural Science Foundation of China ; National Key Research and Development Program ; Strategic Priority Research Program of the Chinese Academy of Sciences
源URL[http://ir.igsnrr.ac.cn/handle/311030/199090]  
专题中国科学院地理科学与资源研究所
通讯作者Wei, Gehong; Wei, Xiaorong
作者单位1.26 Xinong Rd, Yangling 712100, Shaanxi, Peoples R China
2.China Agr Univ, Coll Land Sci & Technol, Beijing 100193, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Northwest A&F Univ, Coll Soil & Water Conservat Sci & Engn, Yangling 712100, Shanxi, Peoples R China
5.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China
6.Chinese Acad Sci & Minist Educ, Res Ctr Soil & Water Conservat & Ecol Environm, State Key Lab Soil Eros & Dryland Farming Loess Pl, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式
GB/T 7714		 Gou, Xiaomei,Hu, Yaxian,Ni, Huaqian,et al. Arbuscular mycorrhizal fungi alleviate erosional soil nitrogen loss by regulating nitrogen cycling genes and enzymes in experimental agro-ecosystems[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2024,906:11.
APA Gou, Xiaomei.,Hu, Yaxian.,Ni, Huaqian.,Wang, Xiang.,Qiu, Liping.,...&Wei, Xiaorong.(2024).Arbuscular mycorrhizal fungi alleviate erosional soil nitrogen loss by regulating nitrogen cycling genes and enzymes in experimental agro-ecosystems.SCIENCE OF THE TOTAL ENVIRONMENT,906,11.
MLA Gou, Xiaomei,et al."Arbuscular mycorrhizal fungi alleviate erosional soil nitrogen loss by regulating nitrogen cycling genes and enzymes in experimental agro-ecosystems".SCIENCE OF THE TOTAL ENVIRONMENT 906(2024):11.

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来源：地理科学与资源研究所

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