河北农业大学学报2025，Vol.48Issue(3)：39-45,7.DOI:10.13320/j.cnki.jauh.2025.0037
链格孢欧尔密病毒1对链格孢苹果专化型生物学性状及致病力的影响
Effect of Alternaria altenata ourmia-like virus 1 on the biological characteristics and pathogenicity of Alternaria alternata f.sp.mali
摘要
Abstract
Alternaria blotch of apple is a major foliar disease of apples caused by Alternaria alternata f.sp.mali.In our previous study,we first reported the strain QY-2 of A.alternata f.sp.mali with low virulence,which was co-infected by Alternaria altenata ourmia-like virus 1(AaMV1)and Alternaria altenata chrysovirus 1(AaCV1),as well as the virus-free strain VFQY2-1 obtained through virus-elimination.In this study,QY-2 and VFQY2-1 were confronted,obtaining the AaMV1 singly infected strain QY2-AaMV1.Biological experiments revealed the effects of AaMV1 infection on the biological traits of the host fungus.AaMV1 infection darkened the color of A.alternata f.sp.mali colonies,whose hyphae was slender,straight,and less branched.And the growth rate was significantly reduced.AaMV1 significantly weakened the pathogenicity of the host fungus and promoted hyphal fusion between strains.The results of this study lay the foundation for elucidating the mechanism of fungal viruses regulating the hypovirulence of host fungi and provide theoretical support for the use of fungal viruses to control plant fungal diseases.关键词
链格孢苹果专化型/链格孢欧尔密病毒1/生物学特性/致病力Key words
Alternaria alternata f.sp.mali/Alternaria altenata ourmia-like virus 1(AaMV1)/biological characteristics/pathogenicity分类
农业科技引用本文复制引用
李晨娇,由绍鹏,赵少波,张静怡,冀子轩,李波,王树桐,曹克强,通信作者..链格孢欧尔密病毒1对链格孢苹果专化型生物学性状及致病力的影响[J].河北农业大学学报,2025,48(3):39-45,7.基金项目
河北省自然科学基金项目(C2022204196) （C2022204196）
河北省重点研发计划项目(21326506D) （21326506D）
国家现代农业(苹果)产业技术体系项目(CARS-27). （苹果）
