Abstract
The streptomycete strain ETH 7437, producing granaticin, was characterized according to present taxonomic standards and compared with the strainsStreptomyces olivaceus (Waksman) Waksman and Henrici,Streptomyces coelicolor (Muller) andStreptomyces violaceruber (Waksman & Curtis). The strain ETH 7437 formed gray aerial mycelium, straight and flexuos sporophores, even single hooks and open spirals. Normally the amount of spores in chains was over 50, the surface of spores being smooth. The strain utilizedd-glucose,d-arabinose,d-xylose andd-fructose. The strain was capable of forming antibiotic pigment stably. For the strain ETH 7437 the termStreptomyces granaticolor was proposed.
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