1887

Abstract

A Gram-reaction-positive aerobic actinomycete, designated strain MN08-A0118, which produced short chains of non-motile spores on the tips of long sporophores and formed yellow–brown colonies with branched substrate mycelium, was studied in detail to determine its taxonomic position. On the basis of 16S rRNA gene sequence analyses, strain MN08-A0118 was grouped into the genus , being most closely related to (98.2 %), (98.2 %), (98.2 %), (97.9 %) and (97.4 %). Chemotaxonomic data supported allocation of the strain to the genus . MK-10(H) was the predominant menaquinone with minor amounts of MK-10(H), MK-10(H) and MK-9(H); the fatty acid profile contained major amounts of iso-C, C 10-methyl, iso-C and iso-C 2-OH; the phospholipid profile contained phosphatidylethanolamine, phosphatidylmethylethanolamine and glucosamine-containing phospholipids; and the whole-cell sugars included ribose, glucose, galactose, madurose and rhamnose (trace). The phylogenetic data, phenotypic and genotypic properties and DNA–DNA hybridization differentiated this strain from its closely related strains, (35–54 % DNA–DNA relatedness), (39–51 %), (3–16 %), (34–39 %) and (34–42 %). Thus, MN08-A0118 represents a novel species of the genus , for which the name sp. nov. is proposed, with MN08-A0118 ( = NBRC 105882  = VTCC D9-22) as the type strain. In addition, DNA–DNA hybridization results showed that and are synonyms of .

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2012-10-01
2019-10-22
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