Variovorax dokdonensis sp. nov., isolated from soil.
A Gram-negative, motile and oval- or rod-shaped bacterial strain, DS-43T, was isolated from soil from Dokdo, Korea, and its taxonomic position was investigated by using a polyphasic approach. The strain grew optimally at pH 7.0-8.0 and at 30 degrees C in the presence of 0.5 % (w/v) NaCl. Strain DS-43T had Q-8 as the predominant ubiquinone and C(16 : 0), C(16 : 1)omega7c and/or iso-C(15 : 0) 2-OH, C(18 : 1)omega7c and C(17 : 0) cyclo as the major fatty acids, which are consistent with the corresponding data for the type strain (KCTC 12459T) of Variovorax paradoxus. The DNA G+C content was 66.0 mol%. Phylogenetic analyses based on 16S rRNA gene sequences showed that strain DS-43T was most closely related to Variovorax paradoxus, the only recognized species of the genus. The level of 16S rRNA gene sequence similarity between strain DS-43T and V. paradoxus IAM 12373T was 97.3 %. DNA-DNA relatedness data and differential phenotypic properties demonstrated that strain DS-43T is distinguishable from V. paradoxus. On the basis of phenotypic, phylogenetic and genetic data, it is proposed that strain DS-43T (=KCTC 12544T = CIP 108838T) be classified in the genus Variovorax as a member of a novel species, Variovorax dokdonensis sp. nov.
Korea Research Institute of Bioscience and Biotechnology (KRIBB), PO Box 115, Yusong, Taejon, Korea.
Jung-Hoon
JH
Yoon
Korea Research Institute of Bioscience and Biotechnology (KRIBB), PO Box 115, Yusong, Taejon, Korea.
So-Jung
SJ
Kang
Korea Research Institute of Bioscience and Biotechnology (KRIBB), PO Box 115, Yusong, Taejon, Korea.
Tae-Kwang
TK
Oh
D042621:Comamonadaceae / Q000145:classification* / Q000235:genetics / Q000254:growth & development / Q000302:isolation & purification*; D008969:Molecular Sequence Data; D010802:Phylogeny; D012329:RNA, Bacterial / Q000235:genetics; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D012988:Soil Microbiology
D012329:RNA, Bacterial; D012336:RNA, Ribosomal, 16S