杨树内生真菌群落多样性

Communicy Diversities of Endophytic Fungi in Poplar

为了探究杨树内生真菌的群落多样性,采用组织分离法,从杨树的叶、枝、干皮及根中分离出992个真菌菌株,经过鉴定,这些菌株分别归属于2亚门、4纲、4目、5科、13属。研究表明,链格孢属(Alternaria spp.)和茎点霉属(Phoma spp.)为优势菌种。不同部位、不同树龄、不同品种的杨树内生真菌的数量和种类具有一定的差异,说明内生真菌具有一定的宿主和组织专一性。运用多样性指数可以定量的直观地体现内生真菌群落多样性的高低。

An experiment was conducted to isolate 992 strains of endophytic fungi from leaves,twigs,tree barks and roots of Poplar by tissue isolation to discuss the community diversity of endophytic fungi in Poplar.Through classification identification,these fungi belong to two subphylum,four class,four orders,five families and thirteen genera.Alternaria spp.and Phoma spp.are the prevailing genus in Populus.The number and component of endophytic fungi in different parts,ages and species of Populus are different,so the endophytic fungi are specific to the parasitifer and tissue.The diversity index can be applied to manifest the level of community diversity of the endophytic fungi quantitatively and intuitively.