Polyphasic assignment of an aromatic-degrading Pseudomonas sp., strain DJ77, in the genus Sphingomonas as Sphingomonas chungbukensis sp. nov
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- Polyphasic assignment of an aromatic-degrading Pseudomonas sp., strain DJ77, in the genus Sphingomonas as Sphingomonas chungbukensis sp. nov
- Seong Jae Kim; Jong Sik Chun; Kyung Sook Bae; Young Chang Kim
- Bibliographic Citation
- International Journal of Systematic and Evolutionary Microbiology, vol. 50, no. 4, pp. 1641-1647
- Publication Year
- Pseudomonas sp. strain DJ77, which was described as an aromatic- degrading bacterium, was investigated to clarify its taxonomic position. Phylogenetic analysis based on 16S rDNA sequences indicated that the strain belonged to the genus Sphingomonas and formed a monophyletic clade with the type strains of Sphingomonas chlorophenolica, Sphingomonas herbicidovorans and Sphingomonas yanoikuyae with sequence similarity values of 98.1, 96.1 and 95.6%, respectively. Genomic relatedness based on DNA-DNA hybridization of strain DJ77 to these strains is 7-14%. Strain DJ77 contained ubiquinone 10 as the main respiratory quinone, and the G+C content of DNA was 63 mol%. The organism contained octadecenoic acid (67%) as major cellular fatty acid. Strain DJ77 can be readily differentiated from representative members of the genus Sphingomonas using a battery of biochemical tests. On the basis of polyphasic evidence, it is proposed that strain DJ77, previously known as Pseudomonas sp., be reclassified in the genus Sphingomonas as Sphingomonas chungbukensis sp. nov. The type strain is strain DJ77(T) (= KCTC 2955(T) = IMSNU 11152(T)).
- Sphingomonas chungbukensis sp. nov.polyphasic classification16S rDNA sequencingDNA-DNA hybridization
- Microbiology Soc
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