Nocardioides dubius sp. nov., isolated from an alkaline soil

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Title
Nocardioides dubius sp. nov., isolated from an alkaline soil
Author(s)
Jung-Hoon Yoon; Choong Hwan Lee; Tae Kwang Oh
Bibliographic Citation
International Journal of Systematic and Evolutionary Microbiology, vol. 55, no. 5, pp. 2209-2212
Publication Year
2005
Abstract
A Gram-positive, rod- or coccus-shaped bacterial strain, KSL-104T, was isolated from an alkaline soil from Korea and its taxonomic position was investigated by a polyphasic approach. Strain KSL-104T grew optimally at pH 7.0-8.0 and 30 °C. It was characterized chemotaxonomically as having a cell-wall peptidoglycan type based on LL-2,6-diaminopimelic acid with MK-8(H4) as the predominant menaquinone. The major fatty acid was iso-C16:0 and the major polar lipids were diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine and phosphatidylinositol. The DNA G+C content was 70.6 mol%. A neighbour-joining phylogenetic tree based on 16S rRNA gene sequences revealed that strain KSL-104T joined the cluster comprising Nocardioides jensenii and Marmoricola aurantiacus. The cellular fatty acid profile of strain KSL-104T was different from that of M. aurantiacus. Strain KSL-104T and the type strain of N. jensenii exhibited a 16S rRNA gene sequence similarity value of 97.1% and a mean DNA-DNA relatedness value of 13%. Levels of 16S rRNA gene sequence similarity between strain KSL-104T and the type strains of other Nocardioides species were in the range 94.0-96.5%. On the basis of phenotypic, phylogenetic and genetic data, strain KSL-104T (=KCTC 9992T=JCM 13008T) represents a novel species of the genus Nocardioides, for which the name Nocardioides dubius sp. nov. is proposed.
ISSN
0020-7713
Publisher
Microbiology Soc
DOI
http://dx.doi.org/10.1099/ijs.0.63748-0
Type
Article
Appears in Collections:
Division of Biomedical Research > Metabolic Regulation Research Center > 1. Journal Articles
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