在野生猪苓 (Grifolaumbellata (Pers .)Pil偄ｔ)菌核生长穴中首次分离到猪苓菌丝形成菌核所必需的伴生菌(Grifolasp .)。实验证明 :纯培养的猪苓菌丝不能形成菌核 ,但其与伴生菌共培养 ,无论在实验室培养基上或用树棒栽培 ,猪苓菌核形成很快且发育正常 ;伴生菌是猪苓菌丝形成菌核的关键生物因子。另外 ,伴生菌菌丝和猪苓菌菌丝二者形态差别较大 ,前者多为细长的薄壁菌丝 ,后者多为细胞直径较大的薄壁和厚壁菌丝。 The Grifola sp. Was isolated for the first time in the gibberelliculus of Grifolaumbellata (Pers.) Pil 偄 t. Experiments show that: pure culture of Polyporus umbellatus can not form sclerotia, but its co-culture with companion bacteria, either in the laboratory medium or with a tree rod cultivation, Ling bacteria rapid and normal development; bacteria associated Polyporus umbellatus sclerotium formation of key biological factors. In addition, the morphology of the mycoplasma subsp. Mycoides and the strains of T. gonorrhoeae are quite different. The former are mostly thin-walled hyphae hyphae, the latter being mostly thin-walled and thick-walled mycelium with larger cell diameters.