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珍稀濒危植物金花茶炭疽病新病原菌的鉴定

Identification of the pathogen of anthracnose on the endangered and rare plant Camellia petelotii

  • 摘要: 为明确金花茶炭疽病病原菌的种类,进而为金花茶炭疽病的有效防治提供理论基础,对金花茶炭疽病样本进行了病原菌分离和纯化,获得疑似病原菌菌株。选取其中2株代表菌株JH01和JH04开展致病性测定,发现其均能引起金花茶炭疽病发生。通过形态学观察,并采用最大似然法(Maximum Likelihood,ML)和贝叶斯法(Bayesian Inference,BI)构建多基因片段系统进化树,最终将菌株JH01和JH04鉴定为果生炭疽菌Colletotrichum fructicola,是引起金花茶炭疽病的新病原菌。

     

    Abstract: In order to clarify the taxonomy of anthracnose pathogens on Camellia petelotii (Merr.) Sealy and provide theoretical basis for the effective control of the disease, the pathogens in the samples of C. petelotii anthracnose were isolated and purified, and the suspected pathogenic fungus were obtained. Two representative strains, JH01 and JH04, were selected for pathogenicity testing and both were able to induce the symptoms of anthracnose. Through morphological observation, as well as the construction of multi-gene fragment phylogenetic trees using Maximum Likelihood (ML) and Bayesian Inference (BI) methods, the strains were identified as Colletotrichum fructicola, which caused anthracnose on C. petelotii.

     

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