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  • Title: Sphingobacterium hungaricum sp. nov. a novel species on the borderline of the genus Sphingobacterium.
    Author: Tóth Á, Máté R, Kutasi J, Tóth E, Bóka K, Táncsics A, Nagy I, Kovács G, Kosztik J, Bata-Vidács I, Kukolya J.
    Journal: Int J Syst Evol Microbiol; 2021 Nov; 71(11):. PubMed ID: 34779758.
    Abstract:
    A Gram-reaction-negative bacterial strain, designated Kb22T, was isolated from agricultural soil and characterized using a polyphasic approach to determine its taxonomic position. On the basis of 16S rRNA gene sequence analysis, the strain shows highest similarity (94.39 %) to Sphingobacterium nematocida M-SX103T. The highest average nucleotide identity value (71.83 %) was found with Sphingobacterium composti T5-12T, and the highest amino acid identity value (66.65 %) was found with Sphingobacterium olei HAL-9T. Cells are aerobic, non-motile rods. The isolate was found to be positive for catalase and oxidase tests. The assembled genome of strain Kb22T has a total length of 4,06 Mb, the DNA G+C content is 38.1 mol%. The only isoprenoid quinone is menaquinone 7 (MK-7). The major fatty acids are iso-C15:0 (28.4%), summed feature 3 (C16:1 ω7c and/or iso-C15:0 2-OH) (25.7 %) and iso-C17:0 3-OH (19.7 %). Based on phenotypic characteristics and phylogenetic results, it is concluded that strain Kb22T is a member of the genus Sphingobacterium and represents a novel species for which the name Sphingobacterium hungaricum sp. nov. is proposed. The type strain of the species is strain Kb22T (=LMG 31574T=NCAIM B.02638T).
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