%0 Journal Article %A Guo, Xiao-Han %A Wang, Ning %A Yuan, Xiao-Xue %A Zhang, Xi-Ying %A Chen, Xiu-Lan %A Zhang, Yu-Zhong %A Song, Xiao-Yan %T Poseidonibacter antarcticus sp. nov., isolated from Antarctic intertidal sediment %D 2019 %J International Journal of Systematic and Evolutionary Microbiology, %V 69 %N 9 %P 2717-2722 %@ 1466-5034 %R https://doi.org/10.1099/ijsem.0.003539 %K sp. nov. %K the genus Poseidonibacter %K Antarctic intertidal sediment %I Microbiology Society, %X A Gram-reaction-negative, aerobic, flagellated and coccoid-shaped bacterial strain, designated SM1702T, was isolated from Antarctic intertidal sediment collected off Ardely Island, West Antarctica. The strain grew at 0–30 °C and with 0.5–5.0 % (w/v) NaCl. Phylogenetic analysis based on 16S rRNA gene sequences and single-copy orthologous clusters both showed that strain SM1702T, together with Poseidonibacter lekithochrous , occupied an independent phylogenetic branch, sharing the highest 16S rRNA gene sequence similarity with type strain of the latter (95.6 %). The major fatty acids were summed feature 3 (C16 : 1 ω7c and/or C16 : 1 ω6c), summed feature 8 (C18 : 1 ω7c and/or C18 : 1 ω6c), C16 : 0, and summed feature 2 (C14 : 0 3-OH and/or iso-C16 : 1 I). Polar lipids were phosphatidylethanolamine and phosphatidylglycerol. The genomic DNA G+C content of strain SM1702T was 27.1 mol%. Based on the results of the polyphasic characterisation for strain SM1702T, it is identified as the representative of a novel species of Poseidonibacter , for which the name Poseidonibacter antarcticus sp. nov. is proposed. The type strain of Poseidonibacter antarcticus is SM1702T (=MCCC 1K03471T=KCTC 62796T). %U https://www.microbiologyresearch.org/content/journal/ijsem/10.1099/ijsem.0.003539