Promotion of Arabidopsis immune responses by a rhizosphere fungus via supply of pipecolic acid to plants and selective augment of phytoalexins

作     者：Feifei Luo Guirong Tang Song Hong Tianyu Gong Xiu-Fang Xin Chengshu Wang 

作者机构：Key Laboratory of Insect Developmental and Evolutionary BiologyCAS Center for Excellence in Molecular Plant SciencesShanghai Institute of Plant Physiology and EcologyChinese Academy of SciencesShanghai 200032China CAS Center for Excellence in Biotic InteractionsUniversity of Chinese Academy of SciencesBeijing 100049China National key Laboratory of Plant Molecular GeneticsCAS Center for Excellence in Molecular Plant SciencesShanghai Institute of Plant Physiology and EcologyChinese Academy of SciencesShanghai 200032China School of Life Science and TechnologyShanghaiTech UniversityShanghai 201210China 

出 版 物：《Science China(Life Sciences)》 (中国科学（生命科学英文版）)

年 卷 期：2023年第66卷第5期

页      面：1119-1133页

核心收录：

学科分类：0710[理学-生物学] 09[农学] 0904[农学-植物保护] 090401[农学-植物病理学] 

基　　金：supported by the Chinese Academy of Sciences(XDPB16,QYZDJ-SSW-SMC028) the National Natural Science Foundation of China(32021001,31530001) 

主　　题：Metarhizium robertsi rhizosphere fungus pipecolic acid camalexin aliphatic glucosinolate plant defenses 

摘      要：The ascomycete insect pathogenic fungi such as Metarhizium species have been demonstrated with the abilities to form the rhizosphere or endophytic relationships with different plants for nutrient *** this study,after the evident infeasibility of bacterial disease development in the boxed sterile soils,we established a hydroponic system for the gnotobiotic growth of Arabidopsis thaliana with the wild-type and transgenic strain of Metarhizium *** transgenic fungus could produce a high amount of pipecolic acid(PIP),a pivotal plant-immune-stimulating *** inoculation experiments showed that *** could form a non-selective rhizosphere relationship with *** to the PIP uptake by plants after exogenous application,PIP level increased in Col-0 and could be detected in the PIP-non-producing Arabidopsis mutant(ald1)after fungal inoculations,indicating that plants can absorb the PIP produced by *** transgenic fungal strain had a better efficacy than the wild type to defend plants against the bacterial pathogen and aphid *** to ald1,fmo1 plants could not be boosted to resist bacterial infection after *** fungal inoculations,the phytoalexins camalexin and aliphatic glucosinolate were selectively increased in Arabidopsis via both PIP-dependent and-independent *** study unveils the potential mechanism of the fungus-mediated beneficial promotion of plant immunity against biological *** data also highlight the added values of *** to plants beyond the direct suppression of insect pest populations.