STREPTOMYCES COSTARICANUS SP-NOV, ISOLATED FROM NEMATODE-SUPPRESSIVE SOIL

A nerv bacterial strain, strain CR-43(T) (T = type strain), which was isolated from tropical soil and was previously shown to have antinemat odal and antibiotic properties, is described, The name Streptomyces co staricanus is proposed for this organism, The generic placement of str ain CR-43(T) was based on its typical morphology, its production of LL -diaminopimelic acid, and its fatty acid composition. To clarify the t axonomic position of strain CR-43(T), it was compared with the type st rains of similar Streptomyces species, The results of a number of bioc hemical tests and a profile analysis of the hydrolyzable fatty acids i ndicated that CR-43(T) differs from previously described species, Stra in CR-43 (= ATCC 55274 = NRRL B-16897) is the type strain of S. costar icanus sp. nov.