绣球叶斑病病原菌的分离与鉴定  

Isolation and identification of the pathogen causing leaf spot on Hydrangea macrophylla

作　　者：杨婷[1] 曹春玲 周逸文 王卉 李齐升 单宏英 YANG Ting;CAO Chunling;ZHOU Yiwen;WANG Hui;LI Qisheng;SHAN Hongying(Tianjin Agricultural University,Tianjin 300392,China;Agriculture and Animal Husbandry Technology Popularization Center of Inner Mongolia Autonomous Region,Hohhot 010010,China)

机构地区：[1]天津农学院,天津300392 [2]内蒙古自治区农牧业技术推广中心,呼和浩特010010

出　　处：《植物病理学报》2025年第2期352-355,共4页Acta Phytopathologica Sinica

基　　金：国家大学生创新创业培训计划(202010061009,202110061041);国家自然科学基金青年项目(32001868);天津市教委科技计划项目(2021KJ105)。

摘　　要：绣球(Hydrangea macrophylla(Thunb.)Ser.)是虎耳草科(Saxifragaceae)绣球属(Hydrangea)的观赏类植物^([1]),具有较高的观赏、生态、药用和经济价值,是世界三大花园植物之一,种植面积逐年增加。绣球花在生长过程中易受根腐病、白粉病、叶斑病、灰霉病和炭疽病的危害。2023年3月在天津市西青区绣球花培育温室发现绣球叶斑病发病严重,发病率达36%。Hydrangea macrophylla,as one of the three major garden plants worldwide,has high ornamental and economic value.In March 2023,severe leaf spots were observed on H.macrophylla in the greenhouse in Xiqing District,Tianjin.Tissue separation was carried on to gain a pure strain that caused brown leaf spot on H.macrophylla,and its pathogenicity was confirmed based on Koch's postulates.According to morphological features and phylogenetic analyses of rDNA-ITS,GAPDH,and Alt a1 gene,the pathogen was identified as Alternaria alternata.This is the first report of A.alternata causing leaf spot on H.macrophylla in China,which is going to pave the road for disease diagnosis and effective control strategies.

关 键 词：鉴定 观赏类植物 绣球叶斑病 虎耳草科 

分 类 号：S432.44[农业科学—植物病理学]