Flavobacterium sediminilitoris sp. nov., isolated from a tidal flat

Sooyeon Park, Jeehyun Choi, Su Jung Choi, Jung-Hoon Yoon
International Journal of Systematic and Evolutionary Microbiology 2018, 68 (2): 630-635
A Gram-stain-negative, facultatively aerobic, motile-by-gliding, non-flagellated and rod-shaped bacterial strain, designated YSM-43T , was isolated from a tidal flat in Yeosu on the South Sea in the Republic of Korea. Strain YSM-43T grew optimally at 30 °C and in the presence of 1.0-2.0 % (w/v) NaCl. A neighbour-joining phylogenetic tree based on 16S rRNA gene sequences showed that strain YSM-43T fell within the clade comprising type strains of Flavobacterium species, clustering with the type strains of Flavobacterium jejuense and Flavobacterium jumunjinense. It exhibited 16S rRNA gene sequence similarity values of 97.20 and 97.15 % to the type strains of F. jejuense and F. jumunjinense, respectively, and of less than 96.59 % to the type strains of the other Flavobacterium species. Strain YSM-43T contained menaquinone-6 as the predominant menaquinone and iso-C15 : 0, iso-C17 : 0 3-OH, iso-C15 : 1 G and iso-C15 : 0 3-OH as the major fatty acids. The major polar lipids were phosphatidylethanolamine and one unidentified lipid. The DNA G+C content of strain YSM-43T was 29.8 mol% and its DNA-DNA relatedness values with type strains of F. jejuense and F. jumunjinense were 13 and 11 %, respectively. The differential phenotypic properties, together with the phylogenetic and genetic data, revealed that strain YSM-43T is separate from other recognized species of the genus Flavobacterium. On the basis of the data presented, strain YSM-43T is considered to represent a novel species of the genus Flavobacterium, for which the name Flavobacteriumsediminilitoris sp. nov. is proposed. The type strain is YSM-43T (=KACC 19435T =KCTC 62142T =NBRC 113020T ).

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