INTERFERENCE BY NON-HOST PLANT ROOTS AND ROOT EXUDATES IN THE INFECTION PROCESSES OF PHYTOPHTHORA NICOTIANAE

作     者：Yuxin YANG He ZHANG Yuting FANG Ying LI Xinyue MEI Huichuan HUANG Fei DU Shusheng ZHU Min YANG Yixiang LIU Yuxin YANG;He ZHANG;Yuting FANG;Ying LI;Xinyue MEI;Huichuan HUANG;Fei DU;Shusheng ZHU;Min YANG;Yixiang LIU

作者机构：State Key Laboratory for Conservation and Utilization of Bio-Resources in YunnanYunnan Agricultural UniversityKunming 650201China Key Laboratory for Agro-Biodiversity and Pest Control(Ministry of Education)College of Plant ProtectionYunnan Agricultural UniversityKunming 650201China Key Laboratory of Pest Monitoring and Green Management(Ministry of Agriculture and Rural Affairs of China)College of Plant ProtectionChina Agricultural UniversityBeijing 100193China 

出 版 物：《Frontiers of Agricultural Science and Engineering》 (农业科学与工程前沿（英文版）)

年 卷 期：2021年第8卷第3期

页      面：447-459页

学科分类：09[农学] 0904[农学-植物保护] 090401[农学-植物病理学] 0901[农学-作物学] 090402[农学-农业昆虫与害虫防治] 

基　　金：This study was supported by the National Natural Science Foundation of China(31972328,31601682) the Natural Science Foundation of Yunnan Province(2018FG001-046) the Major Program in Yunnan Province(202002AE320012-02-03) the key Yunnan provincial programs of Yunnan Eco-Friendly Food International Cooperation Research Center(2019ZG00901-03) the Yunnan Academician Workstation of Chinese Academy of Engineering(2018IC063) the Program for Innovative Research Team in Science and Technology in University of Yunnan Province 

主　　题：fennel and tobacco rotation infection behavior Phytophthora nicotianae reactive oxygen species vanillin 

摘      要：Crop rotations are widely used because they can significantly reduce the incidence of pests and *** interactions between non-host roots and pathogens may be key in the inhibition of soilborne pathogens in crop *** between fennel(Foeniculum vulgare)roots/root exudates and Phytophthora nicotianae were investigated because of the known allelopathy between fennel and tobacco(Nicotiana tabacum).The effects of the key compounds in the fennel rhizosphere on the mycelial growth and zoospore behavior of *** were *** roots of fennel attracted *** zoospores and inhibited their motility and the germination of cystospores,with some cystospores rupturing.4-ethylacetophenone,vanillin and N-formylpiperidine were consistently identified in the fennel rhizosphere and were found to interfere with the infection of ***,especially *** treated with these compounds produced more abnormal branches and accumulated reactive oxygen *** interspecific interactions between non-host roots and pathogens were found to be an important factor in the inhibition by fennel of infection by ***.