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Research article - Peer-reviewed, 2022

Temporal complementarity between roots and mycorrhizal fungi drives wheat nitrogen use efficiency

Yang, Haishui; Fang, Chun; Li, Yifan; Wu, Yongcheng; Fransson, Petra; Rillig, Matthias C.; Zhai, Silong; Xie, Junjie; Tong, Zongyi; Zhang, Qian; Sheteiwy, Mohamed S.; Li, Fengmin; Weih, Martin


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.


arbuscular mycorrhiza; functional complementarity; nitrogen utilisation efficiency; root traits; wheat

Published in

New Phytologist
2022, volume: 236, number: 3, pages: 1168-1181

Authors' information

Yang, Haishui
Nanjing Agricultural University
Fang, Chun
Nanjing Agricultural University
Li, Yifan
Nanjing Agricultural University
Wu, Yongcheng
Nanjing Agricultural University
Swedish University of Agricultural Sciences, Department of Forest Mycology and Plant Pathology
Rillig, Matthias C.
Free University of Berlin
Zhai, Silong
Nanjing Agricultural University
Xie, Junjie
Nanjing Agricultural University
Tong, Zongyi
Nanjing Agricultural University
Zhang, Qian
Chinese Academy of Forestry
Sheteiwy, Mohamed S.
Mansoura University
Li, Fengmin
Nanjing Agricultural University
Swedish University of Agricultural Sciences, Department of Crop Production Ecology

Sustainable Development Goals

SDG2 Zero hunger
SDG12 Responsible consumption and production

UKÄ Subject classification

Agricultural Science

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