海南海芋叶斑病病原鉴定  

Identification of the pathogen causing leaf spots on Alocasia odora in Hainan

作　　者：屈湘乡 胡美姣[2] 王舒敏 丰雯丽 高兆银[2] 李敏[2] 李晓宇[1] QU Xiangxiang;HU Meijiao;WANG Shumin;FENG Wenli;GAO Zhaoyin;LI Min;LI Xiaoyu(School of Life Sciences,Hainan University,Haikou 570228,China;Environment and Plant Protection Institute,Chinese Academy of Tropical Agricultural Sciences,Haikou 571101,China;Research and Development Center for Fine Chemicals/State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering/Key Laboratory of Green Pesticide and Agricultural Bioengineering,Ministry of Education,Guizhou University,Guiyang 550025,China)

机构地区：[1]海南大学生命科学学院,海口570228 [2]中国热带农业科学院环境与植物保护研究所,海口571101 [3]贵州大学/绿色农药与农业生物工程教育部重点实验室,贵阳550025

出　　处：《植物病理学报》2023年第4期705-708,共4页Acta Phytopathologica Sinica

基　　金：海南省重点研发专项(ZDYF2020086);农业农村部财政专项(No.NFZX-2021);中国热带农业科学院基本科研业务费专项项目(1630042021008)。

摘　　要：海芋(Alocasia odora)又名滴水观音,为天南星科海芋属多年生大型常绿观叶草本植物,主要分布于我国海南、福建、广西等热带和亚热带地区[1-2],广泛用于城市园林造景工程,也可作为室内观赏植物[3-4]。海芋常见的病害有叶斑病、枯萎病、基腐病等[5], 其病原菌分别为海芋链格孢(Alternaria alocasiae)、尖孢镰刀菌(Fusarium oxysporum)、烟草疫霉(Phytophthora nicotianae)[6-7]。Alocasia odora(Araceae),native to South America,is a common perennial herb and horticultural plant in the tropical and subtropical regions.From July 2020 to May 2021,a leaf spot disease was found on A.odora on Yongxing island of Sansha City,Hainan Province,China.Disease symptoms such as brown lesions were observed on the leaf margins of the plants.Pathogenicity of the isolate was confirmed with Koch’s postulates.Based on morphological characteristics and phylogenetic analysis of ITS region,EF1-αand CAM gene sequences,the fungal isolate was identified as Fusarium guilinense.This is the first report of F.guilinense causing A.odora leaf spots in China.

关 键 词：Alocasia odora Fusarium guilinense leaf spot PATHOGEN 

分 类 号：S436.8[农业科学—农业昆虫与害虫防治]