黄葛榕根腐病病原菌鉴定及其生物学特性研究  

Identification and biological characterization of root-rot disease in Ficus virens

作　　者：付金鑫 李增平[1] 张宇[1] FU Jinxin;LI Zengping;ZHANG Yu(School of Plant Protection,Hainan University,Haikou 570228,China)

机构地区：[1]海南大学植物保护学院,海口570228

出　　处：《植物病理学报》2024年第6期1257-1262,共6页Acta Phytopathologica Sinica

基　　金：国家天然橡胶产业技术体系(No.CARS-34-BC1)。

摘　　要：0引言黄葛榕(Ficus virens Aiton)又称“黄葛树”,是被子植物门(Angiospermae)桑科(Moraceae)榕属(Ficus)落叶乔木,在我国华南和西南地区被广泛用作行道树[1]。黄葛榕枝繁叶茂,有很好的荫庇作用,其树皮、根皮均可入药,具有祛风除湿、清热解毒、消炎止痛等功效[2-3]。目前,榕树上已报道的病害较少,常见病害有煤烟病、叶斑病等~([4])。To clarify the species and biological characteristics of the pathogenic fungi that cause root rot of Ficus virens in Hainan Province,pathogenic fungi were isolated from diseased tissue and basidiocarps collected from the root of the diseased tree of Ficus virens in March 2022 by tissue separation method.The pathogenic bac-teria causing the root rot disease were identified through pathogenicity determination,combing with morphology identification and molecular identification.The effects of pH,temperature,medium and light on mycelium growth under different treatments were measured by cross crossing method.The results showed that the isolated pathogenic ganoderma strain was the pathogen causing the root rot of Ficus virens.After morphological charac-terization and jointly phylogenetic tree construction based on rDNA-ITS,rDNA-LSU and rDNA-SSU,the patho-gen strain was identified as Ganoderma tropicum.The biological characteristics showed that the optimal medium was PDA medium,the optimal pH was 7.0,the optimal light condition was total darkness,and the optimal growth temperature was 32℃.It will providescientific theoretical basisfor thediagnosisand control of this disease.

关 键 词：病原菌鉴定 祛风除湿 煤烟病 行道树 被子植物门 根腐病 黄葛树 

分 类 号：S432.44[农业科学—植物病理学]