Chitinimonas arctica sp. nov., isolated from Arctic tundra soil

A Gram-stain-negative, rod-shaped, green-pigmented, aerobic and motile bacterium, strain R3-44 T , was isolated from Arctic tundra soil. Stain R3-44 T clustered closely with members of the genus Chitinimonas , which belongs to the family Burkholderiaceae , and showed the highest 16S rRNA sequence similarity to Chitinimonas naiadis AR2 T (96.10%). Strain R3-44 T grew optimally at pH 7.0, 28 °C and in the presence of 0–0.5 % (w/v) NaCl. The predominant respiratory isoprenoid quinone of strain R3-44 T was identified as ubiquinone Q-8. The polar lipids consisted of phosphatidylglycerol, phosphatidylethanolamine, unidentified aminolipid and unidentified phospholipid. The main fatty acids were summed feature 3 (comprising C 16 : 1   ω7 c and/or C 16 : 1   ω6 c , 40.6 %) and C 16 : 0 (29.3 %). The DNA G+C content of strain R3-44 T was 60.8 mol%. On the basis of the evidence presented in this study, strain R3-44 T represents a novel species of the genus Chitinimonas , for which the name Chitinimonas arctica sp. nov. is proposed, with the type strain R3-44 T (=CCTCC AB 2010422 T =KCTC 72602 T ).