[New species of Actinomadura isolated from soils in Turkmenia and their antagonistic properties].

New species, i.e. Actinomadura polychroma and Actinomadura umbrina are described. The cell wall of the cultures contains meso-diaminopimelic acid galactose, glucose and madurose. The former species is characterized by short spore chains in the form of spirals or pseudosporangia, smooth spore surface, white aerial mycelium and colourless, yellowish-brown or blue-green substrate mycelium. The cultures of this species have no antagonistic activity with respect to various test-microbes. The type culture of A. polychroma is designated as INA 2755. A. umbrina is characterized by formation of short spore chains, which are straight, hooked or spiral, often branching, smooth spore surface, white scanty aerial mycelium and brownish or black-brown substrate mycelium and soluble pigment of the same colour. The strains of this species inhibit the growth of some gram-positive bacteria and have no activity against gram-negative organisms. The type culture of A. umbrina is designed as INA 2309.