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1 Research Center for Pathogenic Fungi and Microbial Toxicoses, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8673, Japan
2 Deutsche Sammlung von Mikroorganismen und Zellkulturen, Braunschweig, Germany
Correspondence
Yuzuru Mikami
mikami{at}faculty.chiba-u.jp
Two actinomycete strains, IFM 0354T and IFM 0576, isolated from Japanese patients, were found to have morphological, biochemical and chemotaxonomic properties consistent with their classification in the genus Nocardia. The strains resembled Nocardia otitidiscaviarum and Nocardia uniformis in their phenotypic properties. Comparative 16S rRNA gene sequence analysis showed that the strains are closely related to Nocardia seriolae. DNADNA relatedness values and phenotypic differences from N. seriolae indicated that the strains belong to a novel species of Nocardia, for which the name Nocardia concava sp. nov. is proposed. The type strain is IFM 0354T (=NBRC 100430T=JCM 12351T=DSM 44804T).
An extended phylogenetic tree and tables detailing the fatty acid profiles, mycolic acid patterns and phenotypic properties of IFM 0354T, IFM 0576 and other Nocardia species are available as supplementary material in IJSEM Online.
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