Solibius ginsengiterrae gen. nov., sp. nov., isolated from soil of a ginseng field, and emended description of the genus Sediminibacterium and of Sediminibacterium salmoneum

A novel Gram-staining-negative bacterial strain, designated DCY13T, was isolated from soil of a ginseng field in Korea and characterized by using a polyphasic approach. The phylogenetic analysis based on 16S rRNA gene sequences revealed that strain DCY13T forms a cluster with members of the genera Sediminibacterium, Flavisolibacter, Niabella, Terrimonas, Niastella and Chitinophaga in the family 'Chitinophagaceae', phylum Bacteroidetes, and shares highest sequence similarity (95.2 %) with Sediminibacterium salmoneum NJ-44T. Sequence similarity with other members of the family is 87.6-91.4 %. Cells are non-spore-forming rods, catalase and oxidase-positive, motile by gliding that grow under strictly aerobic conditions. The predominant respiratory quinone is menaquinone MK-7, and the major fatty acids are anteiso-C15:0, iso C16:0, anteiso-C17:0, and iso-C15:0. The G+C content of the genomic DNA is 47.8 mol%. The major cell wall amino acids are D-aspartic acid, D-glycine, D-serine, L-lysine, D-glucosamine, and D-alanine. The major cell wall sugars are ribose, xylose, and galactose. The major polar lipids are phosphatidylethanolamine, phosphatidylglycerol, and diphosphatidylglycerol. It is proposed that strain DCY13T represents a novel genus and species in the family 'Chitinophagaceae' for which the name Solibius ginsengiterrae gen. nov., sp. nov., is proposed. The type strain is DCY13T (= KCTC 12833T = JCM 15794T). Emended descriptions of the genus Sediminibacterium and of S. salmoneum NJ44T are also proposed.