Taxonomical study of the reference strain of Streptomyces erythreus.

The reference strain Streptomyces erythreus formed filamentous growth with Retinaculum-Apertum forms and narrow, long, extended spirals. Under defined conditions it produced abundant red and white mycelium; for its taxonomical characterization the production of red mycelium according to which the strain is classified in a certain series is conclusive. Chains of spiny spores were observed in the electron microscope. In its growth requirements (taxonomically important carbon sources) this strain differed from other strains of the genus Streptomyces. Components of the cell wall type IV were demonstrated in its mycelium.