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内疗素是一种新型的微生物农药,其产生菌是一九六三年从海南岛土壤中分离出的一种放线菌。内疗素具有一定内吸性能,对光、热和酸等因子稳定,能防治苹果树腐烂病、甘薯黑斑病、红麻炭疽病等植物真菌病害和对防治水牛疥癣病也有效果。最近,还发现有刺激植株生长作用,使用时,对人畜也较安全。内疗素产生菌的孢子丝单叉分枝,初生时,波曲或微旋状。成熟时,孢子丝有二至八个数目不等的螺旋。在光学显微镜下,孢子椭圆形或球形。在电子显微镜下,孢子外表长满刺,形状像苍茸种子。在土豆琼脂培养基上孢子丝呈灰色或灰褐色。
Endophyte is a new type of microbial pesticide whose producing bacteria is an actinomycete isolated from soil in Hainan Island in 1963. Endothelin has certain internal absorption properties, is stable to light, heat and acid and other factors, and can prevent and cure apple tree rot disease, sweet potato black spot disease, kennel anthracnose and other plant fungal diseases, and also has effects on preventing and controlling buffalo scabies. Recently, it has been found to stimulate the growth of plants, when used, it is safer for humans and animals. Spores of intramuscular hemolysin monofilament branches, newborn, wave song or micro-spin-like. When mature, spores have two to eight spirals of varying lengths. Under light microscopy, the spores are oval or spherical. Under electron microscopy, the spores are full of stings that look like chaffy seeds. Spore silk gray or beige on potato agar medium.