五倍子树炭疽病菌的分离与鉴定  

Identification of pathogen causing Rhus chinensis anthracnose

作　　者：徐小文 李科 张子一[1] 黄敏 查玉平[1] XU Xiaowen;LI Ke;ZHANG Ziyi;HUANG Min;ZHA Yuping(Hubei Academy of Forestry,Wuhan 430075,China;Faculty of Resources and Enviromental Science Hubei University,Wuhan 430062,China)

机构地区：[1]湖北省林业科学研究院,武汉430075 [2]湖北大学资源环境学院,武汉430062

出　　处：《植物病理学报》2024年第3期664-668,共5页Acta Phytopathologica Sinica

基　　金：五峰五倍子科技攻关项目“五峰五倍子主要病虫害综合防控技术研究”;神农架林区林业科技计划项目“神农架五倍子培养技术示范推广”。

摘　　要：盐肤木(Rhus chinensis)是漆树科盐肤木属落叶小乔木植物,在我国境内分布十分广泛。由于该植物的幼叶叶翅受蚜虫寄生刺激后,叶组织膨大形成虫瘿叫作五倍子,可广泛应用于化工和医药等领域,因此盐肤木又被称为五倍子树,属于我国重要的经济树种之一[1]。Rhus chinensis,also known as Chinese gallnut tree is an important economic tree species in China.In recent years,anthracnose symptoms were found on the branches and rachises of Rhus chinensis at several planting located in Wufeng Tujia Autonomous County,Hubei Province.Initially the brown spots were discovered on the infected tree.As the spots gradually expanded,irregular in shape,multiple spots could be united together into a big one,and the color of the spots gradually turned dark brown to black.Finally,the diseased branches broke off,the leaves and the galls on branches became wilt.Ten isolates were obtained from branches samples and eight of them were identified as Colletotrichum nymphaeae by morphology and multilocus phylogenies from combined datasets of ITS,Tublin,Actin,Gadph,Chs.The assay of Koch’s postulates confirmed that C.nymphaeae was the causal agent of Rhus chinensis anthracnose.To our knowledge,this is the first report of C.nymphaeae causing Rhus chinensis anthracnose in China.

关 键 词：落叶小乔木 炭疽病菌 盐肤木 五倍子 经济树种 漆树科 虫瘿 分离与鉴定 

分 类 号：S432.44[农业科学—植物病理学]