RT Journal Article SR Electronic(1) A1 Liu, Zhen-Wei A1 Zhang, Jing A1 Yu, Yong A1 Li, Hui-Rong A1 Du, Zong-JunYR 2019 T1 Pontibacter arcticus sp. nov., isolated from rhizosphere soil of Saxifraga oppositifolia JF International Journal of Systematic and Evolutionary Microbiology, VO 69 IS 11 SP 3609 OP 3615 DO https://doi.org/10.1099/ijsem.0.003668 PB Microbiology Society, SN 1466-5034, AB A Gram-stain-negative, rod-shaped, red-coloured and aerobic bacterium, designated 2b14T, was isolated from rhizosphere soil of Saxifraga oppositifolia sampled at the Chinese Arctic Yellow River Station in Norway. Optimal growth occurred at 28 °C (range, 4–37 °C) and pH 7.0–7.5 (pH 6.5–8.5). The strain could tolerate up to 2.5 % (w/v) NaCl concentration. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain 2b14Thad the highest similarity value of 96.0 % to Pontibacter diazotrophicus CCTCC AB 2013049T. The major fatty acids were summed feature 4 (anteiso-C17 : 1 B and/or iso-C17 : 1 I), iso-C15 : 0 and iso-C17 : 0 3-OH. The major polar lipid was found to be phosphatidylethanolamine. The genomic DNA G+C content of strain 2b14T was 45.5 mol%. The sole respiratory quinone was MK-7. The combined results of physiological, genotypic, phylogenetic and chemotaxonomic analyses showed that strain 2b14T represents a novel species within the genus Pontibacter, for which the name Pontibacter arcticus sp. nov. is proposed. The type strain is 2b14T (=KCTC 62596T=MCCC 1H00304T)., UL https://www.microbiologyresearch.org/content/journal/ijsem/10.1099/ijsem.0.003668