Abstract
Two Gram-staining-negative, aerobic, rod-shaped, bacteria that formed pale-pinkish colonies, designated HMF7056T and HMF7647T were isolated from Ginkgo (Ginkgo biloba) and Korean cornel dogwood (Cornus offcinalis), respectively. Phylogenetic analyses based on sequences of 16S rRNA genes and 92 core genes indicated that two strains represent novel species within the family Sphingobacteriaceae. HMF7056T and HMF7647T showed high 16S rRNA sequence similarities to Daejeonella lutea N7d-4T (93.9 % and 95.7 %, respectively). The genomes of HMF7056T and HMF7647T were 5.2 and 4.8 Mbp in size with 50.5 and 42.5 % DNA G+C contents, respectively. Menaquinone-7 was the main respiratory quinone. The predominant fatty acids of HMF7056T and HMF7647T were iso-C15 : 0 and summed feature 3 (C16 : 1ω7c and/or C16 : 1ω6c). The major polar lipid of both strains was phosphatidylethanolamine. The average nucleotide identity and digital DNA-DNA hybridization values of HMF7056T, HMF7647T and related species were well below the threshold limit for species delineation (<68.9 and <20.8 %, respectively). The average amino acid identity values of HMF7056T, HMF7647T with related type strains were below 67.8 and 68.3 %, respectively. On the basis of the results of phenotypic and phylogenetic characterizations, the two strains are considered to represent members of a novel genus of the family Sphingobacteriaceae, for which the names Hufsiella ginkgonis gen. nov., sp. nov. and Hufsiella arboris sp. nov. are proposed. The type strains are HMF7056T (=KCTC 72282T =NBRC 113964T) and HMF7647T (=KCTC 72283T =NBRC 113965T), respectively.
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