Identification and Distribution of Endophytic Fungi in Some Wild Dendrobia Plants Grown in Dehong,Yunnan

Forty-three strains of endophytic fungi were isolated from the roots,stems and leaves of the 8 different wild Dendrobia plants.After 5.8S rDNA sequence analysis,these strains were clarified to 13 genera including Colletotrichum、Fusarium、Gibberella、Glomerella、Hypocrea、Nectria、Phomopsis、Phoma、Trichoderma and some others.In all the fungi,Colletotrichum were isolated most frequently from stems and leaves and the isolation rate was accounted for 39.5%,while Hypocrea,Nectria and Gibberella strains were firstly isolated from wild Dendrobia plants.It was also demonstrated that the endophytic fungi highly diverse depending on Dendrobia plants.Furthermore,the distribution of endophytic fungi highly varied from roots,stems and leaves.This research has got abundant resources of endophytic fungi.