Journal
JOURNAL OF MICROBIOLOGY
Volume 48, Issue 1, Pages 30-35Publisher
MICROBIOLOGICAL SOCIETY KOREA
DOI: 10.1007/s12275-010-0006-0
Keywords
16S rRNA gene; S. panacihumi; taxonomy; Xanthomonadaceae
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Funding
- Seoul Women's University
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The study isolated a Gram-negative, rod-shaped, non-motile bacterium from the soil of a ginseng field in Daejeon, South Korea and characterized it to determine its taxonomic position. Phylogenetic analysis, based on the 16S rRNA gene sequence, revealed that strain MK06(T) belongs to the family Xanthomonadacea, and showed the highest degree of sequence similarity to Stenotrophomonas rhizophila e-p10(T) (98.6%), Xanthomonas campestris LMG 568(T) (98.0%), Stenotrophonionas maltophilia ATCC 1d3637(T) (97.3%), and Stenotrophomonas humi R-32729(T) (96.9%). Chemotaxonomic data revealed that strain MK06(T) possesses ubiquinone Q-8 as the predominant respiratory lipoquinone, which is common in the genus Stenotrophomonas, and that the predominant fatty acids were 15:0 iso (41.1%), 15:0 anteiso (12.6%), and 17:1 iso omega 9c (8.6%). The results of physiological and biochemical tests clearly demonstrated that strain MK06(T) represents a distinct species and supported its affiliation with the genus Stenotrophomonas. Based on these data, MK06(T) (KCTC, 22893(T); JCM, 16536(T); KEMB, 9004-002(T)) should be classified as the type strain for a novel species, for which we propose the name Stenotrophomonas panacihumi sp. nov.
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