Submitted to: American Society of Microbiologists Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: 5/23/1996
Publication Date: N/A
Technical Abstract: Strain NRRL 12292, which produces the bleomycin-like antibiotics LL- BO1208 alpha and LL-BO1208 beta, exhibits smooth-surfaced ovoid spores on verticils on the aerial mycelia, indicating that it is a member of the verticillate group of Streptomyces formerly classified in the genus Streptoverticillium. The strain was compared morphologically and physiologically to 58 other verticillate Streptomyces strains. DNA relatedness between strain NRRL 12292 and 40 other verticillate Streptomyces strains, including those representing at least 22 genetic species clusters, was also determined. Strain NRRL 12292 is morphologically and physiologically distinct from the other verticillate strains studied, in particular because of the straw-yellow color of its aerial mycelia and spore mass. DNA hybridization data support the uniqueness of this strain, since only low levels of DNA relatedness are observed between NRRL 12292 and the other verticillate strains in the study. These data support the description of the new species Streptomyces stramineus with NRRL 12292 as the type strain.