JOURNAL ARTICLE

Pedobacter daejeonensis sp. nov. and Pedobacter trunci sp. nov., isolated from an ancient tree trunk, and emended description of the genus Pedobacter

Juan Du, Hina Singh, Hien T T Ngo, Kyung-Hwa Won, Ki-Young Kim, Tae-Hoo Yi
International Journal of Systematic and Evolutionary Microbiology 2015, 65 (Pt 4): 1241-6
25634950
Two Gram-stain-negative, yellow, aerobic and rod-shaped bacterial isolates, designated THG-DN3.18(T) and THG-DN3.19(T), were isolated from an ancient tree trunk from Daejeon, South Korea. 16S rRNA gene sequence similarity showed that both strains belong to the genus Pedobacter within the family Sphingobacteriaceae . Strain THG-DN3.18(T) exhibited maximum sequence similarity with Pedobacter boryungensis KCTC 23344(T) (98.5%) while strain THG-DN3.19(T) exhibited maximum sequence similarity with Pedobacter nyackensis LMG 24260(T) (97.3%). In DNA-DNA hybridization tests, the two strains showed less than 35% relatedness with respect to closely related species of the genus Pedobacter . Both strains contained iso-C(15 : 0) and C(16 : 1)ω6c and/or C(16 : 1)ω7c (summed feature 3) as the predominant fatty acids and MK-7 as the major isoprenoid quinone. The DNA G+C contents of strains THG-DN3.18(T) and THG-DN3.19(T) were 35.5 and 40.1 mol%, respectively. The genotypic analysis, biochemical properties, and phenotypic and chemotaxonomic characteristics indicate that strains THG-DN3.18(T) and THG-DN3.19(T) represent novel species of the genus Pedobacter , for which the names Pedobacter daejeonensis sp. nov. and Pedobacter trunci sp. nov. are proposed. The type strains are THG-DN3.18(T) ( = KCTC 42230(T) = JCM 30352(T)) and THG-DN3.19(T) ( = KCTC 42233(T) = JCM 30353(T)), respectively.

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