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Kribbia dieselivorans gen. nov., sp. nov., a novel member of the family Intrasporangiaceae

Korea Research Institute of Bioscience and Biotechnology (KRIBB), PO Box 115, Yusong, Taejon, South Korea

Correspondence
Jung-Hoon Yoon
jhyoon{at}kribb.re.kr

Two Gram-positive, catalase-positive, irregular short rod- or coccoid-shaped bacterial strains, N113^T and R33, were isolated from an enrichment culture with diesel oil-degradation activity and their taxonomic positions were investigated using a polyphasic approach. Phenotypic, phylogenetic and genetic similarities indicated that strains N113^T and R33 were representatives of the same species. Phylogenetic analysis based on 16S rRNA gene sequences showed that strains N113^T and R33 form a lineage independent from those of members of the family Intrasporangiaceae. The novel isolates had cell-wall peptidoglycan based on meso-diaminopimelic acid, MK-8(H₄) as the predominant menaquinone and 10-methyl-C_{18 : 0}, iso-C_{16 : 0}, C_{18 : 1}9c, C_{16 : 0} and C_{18 : 0} as the major cellular fatty acids. The DNA G+C contents were 69.6–69.9 mol%. These chemotaxonomic properties, together with phylogenetic distinctiveness, distinguish the two novel strains from recognized members of the family Intrasporangiaceae. On the basis of phenotypic, phylogenetic and genetic data, strains N113^T (=KCTC 19143^T=JCM 13585^T) and R33 are classified as representatives of a novel genus and species, Kribbia dieselivorans gen. nov., sp. nov., within the family Intrasporangiaceae.

The GenBank/EMBL/DDBJ accession numbers for the 16S rRNA gene sequences of strains N113^T and R33 are DQ372707 and DQ062659, respectively.

A supplementary table detailing the cellular fatty acid contents of Kribbia dieselivorans sp. nov. strains N113^T and R33 is available in IJSEM Online.

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