新大环内酯类抗生素M－90的研究Ⅰ．产生菌的菌种鉴定

Studies on New Macrolide Antibiotics─M90Ⅰ.Taxonomy of Producing Strain of Micromonospora M─90

从我国四川土壤中分离到一株产生大环内酯类抗生素的小单孢菌，经过形态培养及生理生化特征等方面的研究，它在合成培养基上产生紫褐色菌丝体和可溶性玫瑰红色素，分解纤维素能力很强，属于紫色小单孢菌类群。与国内外资料发表的已知种比较，未发现与其完全一致者，故认为它是一个新种，命名为玫瑰红色小单孢菌Ｍ─９０（ＭｉｃｒｏｍｏｎｏｓｐｏｒａｒｏｓｅｏｒｕｂｒａＭ─９０）。

A strain of Micromonospora which produces Royamicin was screened from the mud of Sichuan in China.Its spore chain showed long-thin and branch shape.The top of spores are spherical to oval with spinose surface.Its morphological、cultural characteristics and physiological properties were studied.Its mycelium is brown,it produces soluble rose pigment and decomposes cellulose strongly.This strain belongs to the purple group of Micromonospora but differs from any known species of the genus.It was considered as a new species and named as Micromonospora roseorubra M─90.