Abstract

A Colletotrichum species was isolated from leaves of Cymbidium exhibiting symptoms of anthracnose. In this study, the isolates obtained were identified based on recent taxonomic approaches for the genus Colletotrichum. The identity of the causal pathogen was confirmed using morphological data and phylogenetic analysis of combined multi-gene dataset (internal transcribed spacer, glyceraldehyde 3-phosphate dehydrogenase, chitin synthase-1, actin, histone3, beta-tubulin, and calmodulin). Pathogenicity testing revealed that the isolates were pathogenic to Cymbidium. Based on these results, the fungal pathogen occurring on Cymbidium orchids was identified as Colletotrichum cymbidiicola, which is a newly recorded species in Korea.

摘要

一炭疽病物种从叶中分离蕙兰表现炭疽病症状。在该研究中，基于炭疽菌属的最新分类学方法鉴定了获得的分离株。使用形态学数据和组合多基因数据集的系统发育分析（内部转录间隔区，3-磷酸甘油醛脱氢酶，几丁质合酶-1，肌动蛋白，组蛋白3，β-微管蛋白和钙调蛋白）确认了病原体的身份。致病性测试表明，分离株对大花C兰致病。基于这些结果，上发生的真菌病原体兰兰花鉴定为炭疽菌cymbidiicola， 在韩国是新记录的物种。