Arundinibacter Roseus Gen. Nov., Sp. Nov., A New Member Of The Family Cytophagaceae

Three Gram-stain-negative, aerobic, non-motile, oxidase- and catalase positive, rod-shaped, pink-coloured bacterial strains, DMA-K-7a(T), DMA-K-1 and DMG-N-1, were isolated from water sampled at Lake Ferto/Neusiedler See (Hungary). Phylogenetic analysis based on the 16S rRNA gene sequences revealed that the strains form a distinct linage within the family Cytophagaceae of the phylum Bacteroidetes, and their closest relatives are Rhabdobacter roseus R49(T) (95.66 %) and Dyadobacter sediminis Z12(T) (95.38 %). The assembled genome of strain DMA-K-7a(T) had a total length of 5.8 Mb and a DNA G+C content of 45.7 mol%. The major isoprenoid quinone was menaquinone-7 (MK-7). The major cellular fatty acids were C-16:1 omega 7c, iso-C-15:0, C-16:1 omega 5c, C-16(:0) and iso-C-17:0 3-OH. The polar lipid profile contained phosphatidylethanolamine, phosphatidylserine, an unknown aminolipid, an unknown glycolipid and five unknown lipids. Flexirubin-type pigments were absent. Strain DMA-K-7a(T) (=DSM 106737(T) =NCAIM B.02641(T)) is proposed as the type strain of a new genus and species in the family Cytophagaceae, for which the name Arundinibacter roseus gen. nov., sp. nov. is proposed.