文献类型：期刊文献

英文题名：Temporal complementarity between roots and mycorrhizal fungi drives wheat nitrogen use efficiency

作者：Yang, Haishui[1,2,3] Fang, Chun[1] Li, Yifan[1] Wu, Yongcheng[1] Fransson, Petra[4] Rillig, Matthias C.[5,6] Zhai, Silong[1] Xie, Junjie[1] Tong, Zongyi[1] Zhang, Qian[7] Sheteiwy, Mohamed S.[8] Li, Fengmin[1] Weih, Martin[9]

第一作者：Yang, Haishui

通信作者：Yang, HS[1];Yang, HS[2];Yang, HS[3];Weih, M[4]

机构：[1]Nanjing Agr Univ, Coll Agr, Nanjing 210095, Peoples R China;[2]Nanjing Agr Univ, Jiangsu Key Lab Informat Agr, Nanjing 210095, Peoples R China;[3]Nanjing Agr Univ, Jiangsu Collaborat Innovat Ctr Modern Crop Prod, Nanjing 210095, Peoples R China;[4]Swedish Univ Agr Sci, Uppsala BioCtr, Dept Forest Mycol & Plant Pathol, S-75007 Uppsala, Sweden;[5]Free Univ Berlin, Inst Biol, Altensteinstr 6, D-14195 Berlin, Germany;[6]Berlin Brandenburg Inst Adv Biodivers Res BBIB, D-14195 Berlin, Germany;[7]Chinese Acad Forestry, Res Inst Forestry, 1 Xiangshan Rd, Beijing 100091, Peoples R China;[8]Mansoura Univ, Fac Agr, Dept Agron, Mansoura 35516, Egypt;[9]Swedish Univ Agr Sci, Dept Crop Prod Ecol, S-75007 Uppsala, Sweden

年份：0

外文期刊名：NEW PHYTOLOGIST

收录：;Scopus(收录号：2-s2.0-85136453674);WOS:【SCI-EXPANDED(收录号:WOS:000843786500001)】；

基金：This study was supported by the NSFC-STINT Joint Project (no. 31811530008), the National Natural Science Foundation of China (no. 31770483), the Natural Science Foundation of Jiangsu Province (no. BK20191310), and the Sweden SLU Grogrund Grant to the project 'HeRo - Healthy Roots: Development of tools for the selection of robust cultivars in Swedish plant breeding, with focus on the root system'. We also thanked Qing Xu from the Hubei Academy of Agricultural Sciences (Wuhan, China) for providing wheat seeds for Experiment 1, and Prof. Jian Liu's group from Nantong Academy of Agricultural Sciences for helping in the field management of Experiment 2.

语种：英文

外文关键词：arbuscular mycorrhiza; functional complementarity; nitrogen utilisation efficiency; root traits; wheat

摘要：Improving nitrogen (N) use efficiency (NUE) to reduce the application of N fertilisers in a way that benefits the environment and reduces farmers' costs is an ongoing objective for sustainable wheat production. However, whether and how arbuscular mycorrhizal fungi (AMF) affect NUE in wheat is still not well explored. Three independent but complementary experiments were conducted to decipher the contribution of roots and AMF to the N uptake and utilisation efficiency in wheat. We show a temporal complementarity pattern between roots and AMF in shaping NUE of wheat. Pre-anthesis N uptake efficiency mainly depends on root functional traits, but the efficiency to utilise the N taken up during pre-anthesis for producing grains (E-N,E-g) is strongly affected by AMF, which might increase the uptake of phosphorus and thereby improve photosynthetic carbon assimilation. Root association with AMF reduced the N remobilisation efficiency in varieties with high E-N,E-g; whilst the overall grain N concentration increased, due to a large improvement in post-anthesis N uptake supported by AMF and/or other microbes. The findings provide evidence for the importance of managing AMF in agroecosystems, and an opportunity to tackle the contradiction between maximising grain yield and protein concentration in wheat breeding.