Effects of arbuscular mycorrhizal fungi on zinc uptake,translocation and accumulation in winter wheat during whole plant growth stages  

作　　者：Jing YANG Chuangye ZHANG Yifan LIU Yuanzhe MA Xiangyao WU Jun CAI Fuyong WU 

机构地区：[1]College of Natural Resources and Environment,Northwest A&F University,Yangling 712100,China [2]Key Laboratory of Plant Nutrition and Agricultural Environment of Northwest of Ministry of Agriculture,Yangling 712100,China

出　　处：《Pedosphere》2024年第2期374-384,共11页土壤圈（英文版）

基　　金：The financial support from the Natural Science Basic Research Program of Shaanxi,China(No.2023-JC-ZD17);the National Natural Science Foundation of China(Nos.42077345 and 41571456);the Project of Innovative Experimental Plan for College Students of Northwest A&F University,China(No.202310712128)。

摘　　要：Although arbuscular mycorrhizal fungi(AMF)could play important roles in zinc(Zn)uptake in host plants,the effects of AMF on Zn uptake and transport in winter wheat during the whole growth stages remain unclear.A pot experiment was conducted to investigate the effects of Funneliformis mosseae(Fm)and Claroideoglomus etunicatum(Ce)on Zn absorption,transport,and accumulation in winter wheat growing in soils spiked with different Zn levels(0,2.5,and 25 mg kg^(-1)).The results showed that there was a significant correlation between mycorrhizal colonization rate and Zn absorption efficiency in winter wheat roots during the post-anthesis period,but there was no significant correlation during the pre-anthesis period.Arbuscular mycorrhizal fungi significantly increased Zn concentrations(0.56–1.58 times)in wheat grains under 0 mg kg^(-1)Zn level,but decreased Zn concentrations in wheat grains under 25 mg kg^(-1)Zn level.Additionally,at the filling and maturity stages,AMF increased Zn absorption rate and the contribution of root Zn uptake to grain Zn by 3–14 and 0.36–0.64 times,respectively,under 0 mg kg^(-1)Zn level and 0.21–1.02 and 0.27–0.37 times,respectively,under 2.5 mg kg^(-1)Zn level.However,AMF decreased root Zn absorption rate(0.32–0.61 times)and increased the contribution of Zn remobilization in vegetative tissues to grain Zn(1.69–2.01 times)under 25 mg kg^(-1)Zn level.This study would complement the mechanisms and effects of AMF on Zn absorption and transport in winter wheat and provide a potential method for the application of AMF to enrich wheat grain Zn.

关 键 词：grain Zn source mycorrhizal response post-anthesis period Zn absorption rate Zn remobilization 

分 类 号：S512.11[农业科学—作物学] S154.3