禾本科植物内生真菌研究9——Epichloё yangzii的种传特性及其在宿主体内的分布  

Review on the grass endophyte research in China 9——Seed transmission characteristics and distribution in host plants of Epichloё yangzii

作　　者：申靖[1] 陶文文[1] 陈昌[1] 陈永敢[1] 王志伟[1] 

机构地区：[1]南京农业大学生命科学学院,江苏南京210095

出　　处：《草业科学》2009年第6期146-151,共6页Pratacultural Science

基　　金：国家自然科学基金资助项目(30670008)

摘　　要：Epichloё yangzii是共生于鹅观草属Roegneria植物的产子座有性型内生真菌。2004-2008年,分别在南京的不同地区采集产子座的鹅观草植株,研究E.yangzii在宿主植物体内的分布特征和种传能力。结果显示,E.yangzii在宿主的地上部分有系统的分布,并进入种子,可以进行垂直传播。同时发现种传的Epichloё属真菌在宿主植物体上也同样具有形成子座的能力,但子座不一定每年都能形成。在须根中没有发现E.yangzii的存在。菌丝体随在植株体内分布部位的不同,其形态特征有一定的差异。Epichloe yangzii is the stromata producing sexual endophyte within Roegneria spp. The stromata-developing Roegneria plants grown in Nanjing were collected in 2004 to 2008 to study the distribution of E. yangzii and its ability of seed transmission. The results indicated that the typical fungal hyphae of this endophyte were detected from all tillers in stromata-developing Roegneria plants and this meant a systemic infection within aerial parts of the host. Similar fungal hyphae were detected from young seedlings developed from the endophyte infected seeds and meant that this endophyte was seed transmittable. On the plants developed from the infected seeds, the stromata developed on the culms, but not in every year. The hypha of this endophyte was not found from the root systems. The hyphae were different in the morphology depending on the organ of the plants.

关 键 词：Epichloёyangzii 种传特性 体内分布 鹅观草 

分 类 号：S182[农业科学—农业基础科学]