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Arbuscular mycorrhizal fungi combined with exogenous calcium improves the growth of peanut(Arachis hypogaea L.)seedlings under continuous cropping

引用

Journal of Integrative Agriculture 2019年第2期18卷 407-416页

作者： CUI Li GUO Feng ZHAnG Jia-lei YAnG Sha MEnG Jing-jing GEnG Yun WAnG Quan LI Xin-guo WAn Shu-bo Biotechnology Research Center Shandong Academy of Agricultural Sciences/Key Laboratory of Crop Genetic Improvement and Ecological Physiology of Shandong ProvinceJinan 250100P.R.China scientific observing and experimental station of crop cultivatio n in east china Ministry of AgricultureJinan 250100P.R.China College of Life Sciences Shandong Normal UniversityJinan 250014P.R.China Shandong Academy of Agricultural Sciences Jinan 250100P.R.China

The growth and yield of peanut are negatively affected by continuous *** mycorrhizal fungi(AMF)and calcium ions(Ca^(2+))have been used to improve stress resistance in other plants,but little is known about their roles in peanut seedling growth under continuous *** study investigated the possible roles of the AMF Glomus mosseae combined with exogenous Ca^(2+)in improving the physiological responses of peanut seedlings under continuous *** combined with exogenous Ca^(2+)can enhance plant biomass,Ca^(2+)level,and total chlorophyll *** exogenous Ca^(2+)application,the F_v/F_m in arbuscular mycorrhizal(AM)plant leaves was higher than that in the control plants when they were exposed to high irradiance *** peroxidase,superoxide dismutase,and catalase activities in AM plant leaves also reached their maximums,and accordingly,the malondialdehyde content was the lowest compared to other ***,root activity,and content of total phenolics and flavonoids were significantly increased in AM plant roots treated by Ca^(2+)compared to either *** inoculation or Ca^(2+)treatment *** levels of AhCaM,AhCDPK,AhRAM1,and AhRAM2 were significantly improved in AM plant roots under exogenous Ca^(2+)*** implied that exogenous Ca^(2+)might be involved in the regulation of *** colonization of peanut plants,and in turn,AM symbiosis might activate the Ca^(2+)signal transduction *** combination of AMF and Ca^(2+)benefitted plant growth and development under continuous cropping,suggesting that it is a promising method to cope with the stress caused by continuous cropping.

关键词： Arachis hypogaea L. arbuscular mycorrhizal fungi continuous cropping exogenous calcium

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