Nocardioides kongjuensis sp. nov., an N-acylhomoserine lactone-degrading bacterium

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Title
Nocardioides kongjuensis sp. nov., an N-acylhomoserine lactone-degrading bacterium
Author(s)
Jung-Hoon Yoon; Jung-Kee Lee; Seo-Youn Jung; Jung-Ae Kim; H K Kim; Tae Kwang Oh
Bibliographic Citation
International Journal of Systematic and Evolutionary Microbiology, vol. 56, no. 8, pp. 1783-1787
Publication Year
2006
Abstract
A Gram-positive, rod- or coccoid-shaped and N-hexanoyl-L-homoserine lactone-degrading bacterial strain, A2-4T, was isolated from a soil in Korea, and its taxonomic position was investigated by using a polyphasic approach. Strain A2-4T grew optimally at pH 7.0-8.0 and 30 °C without NaCl. Phylogenetic analyses based on 16S rRNA gene sequences revealed that strain A2-4T is most closely related to members of the genus Nocardioides. Strain A2-4T possessed chemotaxonomic properties indicative of members of the genus Nocardioides; the cell-wall peptidoglycan type was based on LL-diaminopimelic acid, MK-8(H4) was the predominant menaquinone and iso-C16:0 was the predominant fatty acid. The DNA G+C content was 72.1 mol%. The 16S rRNA gene sequence of strain A2-4T was 98.3-99.1 % similar to those of the type strains of Nocardioides simplex, Nocardioides aromaticivorans and Nocardioides nitrophenolicus and 93.8-96.3 % similar to those of the type strains of other Nocardioides species. Strain A2-4T could be distinguished from the three phylogenetic relatives, N. nitrophenolicus, N. aromaticivorans and N. simplex, by DNA-DNA relatedness (25-42 %) and by differences in some phenotypic characteristics. On the basis of the phenotypic, phylogenetic and genetic data, the strain represents a novel species of the genus Nocardioides, for which the name Nocardioides kongjuensis sp. nov. is proposed. The type strain is A2-4T (=KCTC 19054T=JCM 12609T).
ISSN
0020-7713
Publisher
Microbiology Soc
DOI
http://dx.doi.org/10.1099/ijs.0.64120-0
Type
Article
Appears in Collections:
Division of Biomedical Research > Metabolic Regulation Research Center > 1. Journal Articles
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