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

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外文摘要：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.

外文关键词：

grain Zn sourcemycorrhizal responsepost-anthesis periodZn absorption rateZn remobilization

作者：

Jing YANG、Chuangye ZHANG、Yifan LIU、Yuanzhe MA、Xiangyao WU、Jun CAI、Fuyong WU

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作者单位：

College of Natural Resources and Environment,Northwest A&F University,Yangling 712100(China)

Key Laboratory of Plant Nutrition and Agricultural Environment of Northwest of Ministry of Agriculture,Yangling 712100(China)

基金：

Natural Science Basic Research Program of Shaanxi,China国家自然科学基金国家自然科学基金Project of Innovative Experimental Plan for College Students of Northwest A&F University,China

项目编号：

2023-JC-ZD-174207734541571456202310712128

出版年：

2024

DOI：

10.1016/j.pedsph.2023.07.021

土壤圈(英文版)

中国土壤学会,中科院南京土壤研究所和土壤与农业可持续发展国家重点实验室

土壤圈(英文版)

CSTPCD

影响因子：0.477

ISSN：1002-0160

年,卷(期)：2024.34(2)