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Sphingomonas soli sp. nov., a beta-glucosidase-producing bacterium in the family Sphingomonadaceae in the {alpha}-4 subgroup of the Proteobacteria.

Yang DC, Im WT, Kim MK, Ohta H, Lee ST

Department of Oriental Medicinal Material and Processing, College of Life Science, Kyung Hee University, 1 Seocheon, Kihung Yongin, Kyunggi 449-701, South Korea.

Strain T5-04(T), a Gram-negative, non-spore-forming, rod-shaped bacterium, was isolated from soil of a ginseng field in South Korea and characterized in order to determine its taxonomic position. 16S rRNA gene sequence analysis revealed that strain T5-04(T) belongs to the alpha-4 subgroup of the Proteobacteria, and the highest degrees of sequence similarity determined were to Sphingomonas asaccharolytica IFO 10564(T) (97.5 %), Sphingomonas koreensis JSS26(T) (97.1 %), Sphingomonas mali IFO 15500(T) (96.7 %) and Sphingomonas pruni IFO 15498(T) (96.6 %). Chemotaxonomic data revealed that strain T5-04(T) possesses ubiquinone Q-10 predominantly, C(18 : 1) as the predominant fatty acid and sphingoglycolipids, all of which corroborate its assignment to the genus Sphingomonas. The results of DNA-DNA hybridization and physiological and biochemical tests clearly demonstrated that strain T5-04(T) represents a distinct species. Based on polyphasic evidence, T5-04(T) (=KCTC 12210(T)=NBRC 100801(T)=IAM 15213(T)) should be classified as the type strain of a novel Sphingomonas species, for which the name Sphingomonas soli sp. nov. is proposed.

Published 4 April 2006 in Int J Syst Evol Microbiol, 56: 703-7.
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