【摘要】 从辽宁省丹东地区的土壤样品中分离到一株新的杀真菌链霉菌YH9407,其产生的次级代谢产物对多种植物病原真菌和细菌有较强的抑制作用。该菌株在各种合成培养基上生长良好 ,气生菌丝和孢子堆为灰白色 ,基内菌丝一般为浅黄色 ,有的可产生黄色可溶性色素 ;孢子丝柔曲或直立 ,直径为0.17～0.22μm,孢子呈球形或卵圆形 ,直径为(0.6～0.8)μm×(0.8～1.2)μm ;通过与杀真菌链霉菌已知种在形态特征、培养特征和生理生化特性方面的比较 ,YH9407为杀真菌链霉菌的一个新菌株 ,暂命名为StreptomycesfungicidicusNo.9407更多还原

【Abstract】 A new Streptomyces fungicidicus strain YH9407was isolated from a soil sample collected in Dandong,Liaoning Province.It produces a new antibiotic,with a strong inhibition against phytopathogenic fungi and bacteria.The strain YH9407grows well on most media.The aerial mycelium is white to gray,and the vegetative mycelium is normally faint yellow.The culture is non-chromogenic or only yellow pigment is produced.The sporophores are curviform or straight,about0.17～0.22μm,and the spores are spherical or oval to ellipsoidal,(0.6～0.8)μm×(0.8～1.2)μm;The strain YH9407was compared with known species on the mycological prop-erties and identified as a new strain of Streptomyces fungicidicus,which was named as S.fungicidicus No.YH9407.更多还原