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Int J Syst Bacteriol 49 (1999), 671-673; DOI 10.1099/00207713-49-2-671
© 1999 Society for General Microbiology
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NOTE

DNA-DNA relatedness between Saccharomonospora species: ‘Saccharomonospora caesia’ as a synonym of Saccharomonospora azurea

Jung-Hoon Yoon1,2, Sam-Bong Kim1, Sung Taik Lee2 and Yong-Ha Park1

1Korean Collection for Type Cultures (KCTC), Korea Research Institute of Bioscience and Biotechnology (KRIBB), PO Box 115, Yusong, Taejon 305-600, Korea
2Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Taejon, Korea

Author for correspondence: Yong-Ha Park. Tel: +82 42 860 4620.Fax: +82 42 860 4625. e-mail: yhpark{at}kribb4680.kribb.re.kr

ABSTRACT

Saccharomonospora species were subjected to DNA-DNA relatedness determination to investigate their genetic relationships based on genomic DNA. The levels of DNA-DNA relatedness among the type strains of the four validly described Saccharomonospora species ranged from 18 to 46%. Saccharomonospora viridis KCTC 9156. which was described as ‘Saccharomonospora internatus’ but later reclassified as a member of S. viridis, showed a similarity level of 90% to S. viridis KCTC 9115T. Saccharomonospora sp. strain K180 exhibited levels of DNA-DNA relatedness that are indicative of a new species. Saccharomonospora azurea exhibited levels of DNA-DNA homology of 84-95% to ‘Saccharomonospora caesia’ strains including the type strain. Therefore, on the basis of DNA-DNA relatedness data and taxonomic data described previously, it is proposed that ‘S. caesia’ should be considered as a synonym of S. azurea.

Key Words: Saccharomonospora species • DNA-DNA relatedness • taxonomic revision






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Copyright © 1999 by the International Union of Microbiological Societies.