文献类型： 外文期刊
作者： Zhu, Jun-Zi 1 ; Chen, Jin 2 ; Wang, Ying 1 ; Li, Chang-Xin 1 ; Zhang, Chao-Jun 1 ; He, Ai-Guo 2 ; Zhong, Jie 1 ;
作者机构： 1.Hunan Agr Univ, Hunan Prov Key Lab Biol & Control Plant Dis & Ins, Nongda Rd 1, Changsha 410128, Hunan, Peoples R China
2.Hunan Acad Agr Sci, Inst Agroenvironm & Ecol, Changsha 410128, Hunan, Peoples R China
关键词： Corynespora cassiicola; Hydrangea macrophylla; Koch's postulates; leaf spot disease; pathogenicity
期刊名称：CANADIAN JOURNAL OF PLANT PATHOLOGY （ 影响因子：2.442； 五年影响因子：1.993 ）
ISSN： 0706-0661
年卷期：
页码：
收录情况： SCI
摘要： Hydrangea macrophylla, also known as big leaf hydrangea, is an economically valuable ornamental garden plant. From 2016 to 2018, a high incidence of leaf spot disease of hydrangea occurred in Hunan Province of China. Symptoms consisted of irregular to circular lesions, dark brown in color with gray-white centers and delimited by dark brown borders. The lesions further coalesced to form irregularly shaped necrotic areas and extended to the leaf apex resulting in leaf wilt. A fungus was consistently isolated from the symptomatic plants and identified as Corynespora cassiicola by morphological characters and phylogenetic analyses. Pathogenicity was confirmed by fulfilling Koch's postulates. This is the first report of C. cassiicola causing leaf spot on H. macrophylla in China.
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