一种龙眼灵芝茎腐病病原菌的分离与鉴定  

Identification of a Ganoderma stem rot pathogen infecting Dimocarpus longana

作　　者：刘芝妤 李增平[1] 张宇[1] 王晓宇 LIU Zhiyu;LI Zengping;ZHANG Yu;WANG Xiaoyu(Institute of Plant Protection/Ministry of Education Key laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests,Guangxi South Subtropical Agricultural Research Institute,Guangxi Academy of Agricultural Sciences,Hainan University,Haikou 570228,China)

机构地区：[1]海南大学植物保护学院/热带农林生物灾害绿色防控教育部重点实验室/广西农科院广西南亚热带农业科学研究所,海口570228

出　　处：《植物病理学报》2023年第2期330-334,共5页Acta Phytopathologica Sinica

基　　金：国家天然橡胶产业技术体系(CARS-33-BC1);海南大学名师工作室(hdms202014)。

摘　　要：龙眼(Dimocarpus longana Lour.),原产于中国云南,在我国热带亚热带地区广泛种植。龙眼具有极高的经济及药用价值,富含多糖、蛋白质以及黄酮类物质,可用于滋补、保健、抗衰老等多方面[1-2]。在广西彬桥乡发现龙眼树被病原菌侵染后表现为树冠稀疏,叶片失绿发黄,出现枯枝,后期整株叶片变褐后枯死。多雨季节或潮湿环境下,病株茎干基部侧面和暴露的根系上面长出黑褐色和褐色檐状的灵芝担子果(图1)。A Ganoderma stem rot disease was found to infect Dimocarpus longana in 2021 in Binqiao town of Guangxi province.In order to clarify the pathogen of this disease,ten isolates with the same morphology were isolated from basidiocarps by using aconventional tissue separation method.LYJF001,a representative strain with excellent growth,was selected for pathogenicity test,morphological identification,sequence analysis of rDNA-ITS and SSU,and phylogenetic tree construction.The results showed that the pathogen causing the stem rot of D.longana was Ganoderma australe.

关 键 词：病原菌侵染 多雨季节 龙眼树 茎腐病 茎干 潮湿环境 担子果 抗衰老 

分 类 号：S763.7[农业科学—森林保护学]