红哺鸡竹异香柱菌的形态学和分子鉴定

Morphological and molecular identification of Heteroepichloё sasae isolated from Phyllostachys iridescens

竹丛枝病是普遍发生并导致竹林退化的最具破坏性的病害之一。研究该病害的病原对于该病的防治有重大的意义。异香柱菌属Heteroepichlo觕箬竹异香柱菌Heteroepichlo觕sasae是引起竹子丛枝病的病原之一。利用形态学结合系统发育分析的方法,对采自浙江桐乡的红哺鸡竹Phyllostachys iridescens丛枝病病原进行了分离鉴定。结果表明:根据该分离物的形态特征、平板纯培养物的培养特征以及基于内源转录间隔区-核糖体DNA(ITS-r DNA)序列的系统发育分析,最终确定为箬竹异香柱菌。该分离物与红哺鸡竹丛枝病的关系还需进一步研究。

Witches'-broom, one of the most common diseases of bamboo, induces extremely destructive deterioration of bamboo stands. This study on the pathogens of witches'-broom was conducted to help control the disease. Branches of Phyllostachys iridescens were collected from Tongxiang City in Zhejiang Province, which suffered from witches'-broom, and its pathogen, Heteroepichloё sasae, was studied by morphologic and phylogenetic methods. Results showed that according to morphological, cultural, and phylogenetic characteristics Heteroepichloё sasae was isolated from infected Phyllostachys iridescens branches. However, the relationship between this isolate and witches'-broom disease needs further study.