Streptomyces scopuliridis sp. nov. a bacteriocin-producing soil streptomycete

摘要

Actinomycete strain RB72^T was isolated from woodland bluff soil in northern Alabama, USA, and shown to produce a broad spectrum bacteriocin. Based on morphological and chemotaxonomic characteristics, the strain was determined to belong to the genus Streptomyces. Phylogenetic analysis of the near-complete 16S rRNA gene sequence indicated that it differed from those of the described streptomycetes available in public databases. The distinctive white aerial hyphae and lack of sporulation suggest a deficiency in the whi pathway of the organism. A combination of substrate utilization patterns, morphological and chemotaxonomic characteristics and DNA–DNA hybridization results supported the affiliation of strain RB72^T to the genus Streptomyces and enabled the genotypic and phenotypic differentiation of strain RB72^T from closely related reference strains. Strain RB72^T therefore represents a novel species of the genus Streptomyces, for which the name Streptomyces scopuliridis sp. nov. is proposed. The type strain is RB72^T ( = DSM 41917^T  = NRRL B-24574^T).