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1Department of Microbiology, College of Natural Sciences and Research Center for Molecular Microbiology, Seoul National University, Seoul 151-742, Republic of Korea
2Department of Biology, College of Natural Sciences, Sunchon National University, Sunchon 540–742, Republic of Korea
3Genetic Resources Center, Korea Research Institute of Bioscience and Biotechnology, PO Box 115 Yusong, Taejon 305–600, Republic of Korea
4Department of Microbiology, The Medical School, Framlington Place, Newcastle upon Tyne NE2 4HH, UK
Author for correspondence: Yung Chil Hah. Tel: +82 2 880 6700. Fax: +82 2 888 4911. e-mail: hahyungc{at}plaza.snv.ac.kr
ABSTRACT
An actinomycete strain, Nocardia flavorosea JCM 3332, was found to have properties consistent with its classification in the genus Nocardia. An almost complete gene sequence of the 16S rDNA of the strain was determined following cloning and sequencing of the amplified gene. The sequence was aligned with those available for nocardiae and phylogenetic trees were inferred using four tree-making algorithms. The organisms consistently formed a distinct clade with the type strain of Nocardia carnea. However, DNA relatedness experiments showed that the strain and N. carnea DSM 43397Tbelonged to two distinct genomic species. The organism was also distinguished from representatives of all of the validly described species of Nocardia using a combination of phenotypic properties. These genotypic and phenotypic data show that the strain merits recognition as a new species of the genus Nocardia. The name proposed for the new species is Nocardia flavorosea sp. nov. The type strain is JCM 3332T.
Key Words: Nocardia flavorosea classification soil bacteria actinomycetes
Present address: Center of Marine Biotechnology, University of Maryland Biotechnology Institute, 701 East Pratt Street, Baltimore, MD 21202, USA.
The GenBank accession number for the 16S rDNA sequence of strain JCM 3332Treported in this paper is Z46754.
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