君迁子叶斑部病原鉴定及防治建议  

Pathogen identification and control suggestions of leaf spot disease on Diospyros lotus

作　　者：张琳[1] 赵丽丽 张英[1] ZHANG Lin;ZHAO Lili;ZHANG Ying(School of Ecology and Nature Conservation,Beijing Forestry University,Beijing 100083,China)

机构地区：[1]北京林业大学生态与自然保护学院,北京100083

出　　处：《中国森林病虫》2025年第1期1-8,共8页Forest Pest and Disease

基　　金：国家自然科学基金项目“中国蓝莓病原真菌的物种多样性及其致病性研究”(31971658);“中国假尾孢属(Pseudocercospora)的系统学研究”(31770015)和“中国黑星菌科真菌的系统分类研究”(31370063);国家自然科学基金国际合作与交流项目“中国及南非葡萄腔菌科真菌多样性与分类研究”(31461143028)。

摘　　要：为明确君迁子Diospyros lotus叶部病害的病原,对叶片发病部位进行组织分离,通过形态学观察结合ITS、GAPDH、ACT和TUB2多基因系统发育分析及致病性测定鉴定病原。结果表明:从田间2种感病叶片上分离6株真菌,鉴定炭疽菌属Colletotrichum 3个种C. juglandicola、C. mengyinense和C. siamense;接种到健康叶片上,均能引起接种部位发病。C. juglandicola、C. mengyinense和C.siamense均是君迁子叶部炭疽病的病原真菌,且C. juglandicola和C. mengyinense在柿科植物上被首次报道。该结果可为君迁子炭疽病病原真菌多样性及防治研究提供理论参考。To clarify the pathogen of leaf spot on Diospyros lotus,based on morphological indenification,multigene phylogenetic analysis of ITS,GAPDH,ACT and TUB2 genes as well as pathogenicity test,the causal agents were identified.The results showed that six isolates were obtained from leaves of D.lotus with two symptoms in field,in which three species of Colletotrichum,C.juglandicola,C.mengyinense and C.siamense,were identified.C.juglandicola,C.mengyinense and C.siamense could cause leaf disease at the inoculation site of healthy D.lotus leaves,and C.juglandicola and C.mengyinense were first reported on Ebenaceae.The results can provide a theoretical reference for the diversity of pathogenic fungi and the control of D.lotus anthracnose.

关 键 词：君迁子 叶部病害 形态学鉴定 多基因系统发育 炭疽菌属 

分 类 号：S763.15[农业科学—森林保护学]