维吉霉素类抗生素新化合物X-435-C的产生菌X-435的初步分类鉴定

Taxonomic identification of a new compound X-435-C of virginiamycin-like antibiotic producing organism X-435

菌株 X- 435是从我国土壤中分离得到的一株维吉霉素 (virginiamycin)类抗生素产生菌 ,它与已经报道的维吉霉素类抗生素的产生菌相比较 ,在气丝的颜色、孢子链的形状和孢子的表面形态等方面比较接近于菌株 S.graminofaciens(IFO134 5 5 )和 S.pristinaespiralis(IFO130 74)。因此 ,进一步对这三株菌进行r DNA同源性分析 ,结果表明 :菌株 X- 435与 IFO130 74、IFO134 5 5两株菌不属于同一个种群 ,因此认为 ,菌株X- 435是一株不同于已知的维吉霉素类抗生素产生菌的菌株 ,可能是一个新种。

The strain X 435 was isolated from the soil sample in China. It is a virginiamycin producing organism. Compared with the reported virginiamycin like antibiotic producing organisms, X 435 is more similar to S. graminofaciens (IFO13455) and S. pristinaespiralis ( IFO13074 ) in the color of aerial hyphae, morphological characteristics of spore chains and spores. The result of homological analysis of rDNA revealed that strains X 435 and IFO13455, IFO13074 belong to different population. So we propose strain X 435 is a new member of virginiamycin like antibiotic producing organisms.