A pale yellow, Gram-reaction-negative, non-motile, aerobic bacterium, designated MC 3726 T , was isolated from a tundra soil near Ny-Å lesund, Svalbard Archipelago, Norway (78 8N). Growth occurred at 4-37 8C (optimum 25-30 8C) and at pH 5.0-9.0 (optimum pH 8.0 ). An emended description of the genus Luteolibacter is also provided, along with emended descriptions of Luteolibacter cuticulihirudinis, Luteolibacter yonseiensis and Luteolibacter pohnpeiensis. , 2013). The type strains of recognized species in this genus are Gram-negative, non-motile and coccoid-or rodshaped bacteria. Nitrate reduction activity is species-dependent. The major respiratory quinone is MK-9, but some species contain MK-8, MK-7 and MK-10 as major respiratory quinones as well. Predominant cellular fatty acids are C 16:0 and iso-C 14:0 , but some species contain summed feature 3 (C 16:1 v7c and/or C 16:1 v6c) as well. The DNA G+C contents of known strains vary between 55.8 and 57.3 mol %. In this study, an Arctic bacterial isolate was subjected to a polyphasic analysis and identified as a novel member of the genus Luteolibacter.A bacterial strain, designated MC 3726 T , was isolated from a soil sample, from a high Arctic tundra near the settlement Ny-Å lesund (788 539 N 128 099 E) in the Svalbard Archipelago, Norway. The soil sample was diluted serially with sterile 0.85 % (w/v) NaCl solution, and aliquots of the dilutions were plated onto R2A

A pale pink, Gram-reaction-negative, non-motile, aerobic bacterium, designated MC 3624T, was isolated from a tundra soil near Ny-Ålesund, Svalbard Archipelago, Norway (78° N). Growth occurred at 10-37 °C (optimum 25-30 °C) and at pH 6.0-9.0 (optimum pH 8.0). The predominant fatty acids were C16 : 0 (17.7 %), C18 : 1ω7c 11-methyl (13.4 %), summed feature 3 (C16 : 1ω7c and/or C16 : 1ω6c) (10.1 %) and summed feature 8 (C18 : 1ω6c and/or C18 : 1ω7c) (38.3 %). The major respiratory quinone was ubiquinone-10, and the main polar lipids were phosphatidylethanolamine, phosphatidylglycerol, diphosphatidylglycerol, phosphatidylcholine and an unidentified aminolipids. The DNA G+C content was 68.9 mol%. Carotenoids of the spirilloxanthin series were produced. The nearest neighbour to the novel strain was Roseomonas wooponensis WW53T (94.36 % 16S rRNA gene sequence similarity). On the basis of phenotypic, chemotaxonomic and phylogenetic data, strain MC 3624T represents a novel species of the genus Roseomonas, for which the name Roseomonas arcticisoli sp. nov. is proposed. The type strain is MC 3624T (=CCTCC AB 2014278T=LMG 28637T).

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