Abstract
Morphological and cultural characteristics, and levels of DNA-DNA relatedness of Streptomyces coelicolor A3(2) and S. lividans 66 were examined and compared with those of S. coelicolor Müller, S. lividans ISP 5434 and S. violaceoruber ISP 5049 to clarify their taxonomic status. Results reveal that S. coelicolor A3(2) is distinctly different from the type strain S. coelicolor Müller, but closely related to S. violaceoruber ISP 5049. In addition, S. lividans 66 closely resembles S. lividans ISP 5434 and S. violaceoruber ISP 5049 by the same taxonomic criteria.
These results indicate that S. coelicolor A3(2), S. lividans 66 and S. lividans ISP 5434 are closely related to S. violaceoruber.
