Luteolibacter luojiensis sp. nov., isolated from Arctic tundra soil, and emended description of the genus Luteolibacter.

A yellow-pigmented, Gram-reaction-negative, non-motile, aerobic bacterium, designated DR4-30(T), was isolated from tundra soil near Ny-Ålesund, Svalbard Archipelago, Norway (78° 58' N 12° 03' E). Growth occurred at 4-28 °C (optimum 20-25 °C) and at pH 7-8 (optimum pH 7). Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain DR4-30(T) belongs to the genus Luteolibacter in the family Verrucomicrobiaceae. The 16S rRNA gene sequence of this strain showed 95.4 and 94.7 % sequence similarity to those of Luteolibacter pohnpeiensis A4T-83(T) and Luteolibacter algae A5J-41-2(T), respectively. The major respiratory quinones were MK-9 and MK-10; the predominant cellular fatty acids were summed feature 3 (C(16 : 1)ω7c and/or C(16 : 1)ω6c; 20.7 %), iso-C(14 : 0) (20.3 %), C(17 : 0) (10.7 %), C(16 : 0) (8.0 %) and C(14 : 0) (6.6 %). The DNA G+C content was 57.3 mol%. On the basis of phenotypic, chemotaxonomic and phylogenetic data, strain DR4-30(T) represents a novel species of the genus Luteolibacter, for which the name Luteolibacter luojiensis sp. nov. is proposed. The type strain is DR4-30(T) (= CCTCC AB 2010415(T) = NRRL B-59669(T)). An emended description of the genus Luteolibacter is also provided.