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当前位置: 首页 > 文章 > 立枯丝核菌重寄生真菌的筛选 植物病理学报 2002,32 (1) 84-88
Position: Home > Articles > SCREENING FOR HYPERPARASITES OF Rhizoctonia solani Acta Phytopathologica Sinica 2002,32 (1) 84-88

立枯丝核菌重寄生真菌的筛选

作  者：
莫明和;董琳茜;迟胜起;张克勤
单  位：
云南大学工业微生物发酵工程重点实验室
关键词：
重寄生菌;捕食线虫真菌;粉红粘帚霉;立枯丝核菌
摘  要：
从捕食线虫的真菌中筛选到立枯丝核菌 (Rhizoctonia solani)的 8种重寄生真菌 ,即粉红粘帚霉(Gliocladium roseum) ,少孢节丛孢 (Arthrobotrys oligospora) ,弯孢节丛孢 (A.musiformis) ,贵州节丛孢 (A.guizhouense) ,圆锥节丛孢 (A.conoides) ,指状节丛孢 (A.dactyloides) ,多孢节丛孢 (A.superba) ,蠕虫状节丛孢 (A. vermicola)。平板测试表明这 8种重寄生菌能不同程度地影响立枯丝核菌的生长 ,减少菌核的形成数量。其中粉红粘帚霉的寄生力最强 ,可使菌核数减少 5 8.6 7% ,交叉菌落内几乎所有的立枯丝核菌菌丝被寄生。营养条件对重寄生有明显的影响 ,在低营养培养基 CMA和WA上寄生程度严重 ,在营养相对较高的 PDA和 CSA上寄生程度较轻。太高的 C∶N(30 0∶ 1)和太低的 C∶ N(1∶ 1,10∶ 1)都不利于重寄生 ,只有适当的 C∶ N(5 0∶ 1,10 0∶ 1)才有利于重寄生
译  名：
SCREENING FOR HYPERPARASITES OF Rhizoctonia solani
作  者：
MO Ming he 1,2 ,DONG Lin qian 1,CHI Sheng qi 1,ZHANG Ke qin 1 (1.Key Laboratory of Fermentation Engineering of Industrial Microbiology, Yunnan University, Kunming 650091; 2.Bio Technology College of Guizhou University, Guiyang 550025, Chin
关键词：
hyperparasites;nematode trapping fungi; Gliocladium roseum;Rhizoctonia solani
摘  要：
Eight species, Gliocladium roseum,Arthrobotrys oligospora,A. musiformis,A. guizhouense, A. conoides, A. dactyloides, A.superba, A. vermicola , which parasitize Rhizoctonia solani , were screened and their parasitic activity to Rhizoctonia solani and the effects of media nutrition on parasitic activity of G. roseum and A. guizhouense were tested in vitro . Results indicated all of the eight could parasitize R. solani at different level. G. roseum had the highest parasitic capacity which reduced 58.67 percent of sclerotia formation of R. solani . On the overlapped colony, most of mycilia of R. solani were parasitized by G. roseum . The nutrition of media affected parasitic capacity distinctively. The host's mycilia were heavily parasitized on WA and CMA and less on PDA and CSA. Both high ratio (300∶1) and low ratio (1∶1, 10∶1) of C∶N did not favor the parasitism, only specific ratio of C∶N(50∶1, 100∶1) were favorable to the mycoparasitism.

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