%0 Journal Article %A Hu, Miaomiao %A Zhai, Yanwu %A Zhang, Yanfeng %A Han, Xiaoyan %A Fang, Wei %A Fang, Zemin %A Xiao, Yazhong %T Marinomonas flavescens sp. nov., isolated from seawater adjacent to Fildes Peninsula, Antarctica %D 2019 %J International Journal of Systematic and Evolutionary Microbiology, %V 69 %N 11 %P 3414-3419 %@ 1466-5034 %R https://doi.org/10.1099/ijsem.0.003631 %K Fildes Peninsula %K Marinomonas flavescens sp. nov. %K seawater %I Microbiology Society, %X A Gram-negative bacterium, namely strain ANRC-JHZ47T, was isolated from a seawater sample collected at Biological Bay, Fildes Peninsula, Antarctica. Cells of strain ANRC-JHZ47T were rod-shaped and motile by a single polar flagellum. Strain ANRC-JHZ47T was aerobic, oxidase-negative, and catalase-positive. The strain grew at 4–37 °C (optimum, 25 °C), pH at 3.5–10.0 (optimum, pH 5.5) and in NaCl at 1–7.0 % (w/v; optimum, 2–3 %). Strain ANRC-JHZ47T used Q-8 as the predominant respiratory quinone. Its predominant fatty acids were C16 : 0 (21.9 %), C12 : 0 (12.6 %), C19 : 0cyclo ω8c (12.4 %), summed feature 3 (C16 : 1ω7c and/or C16 : 1ω6c; 13.1 %), C10 : 0 3-OH (11.3 %) and summed feature 8 (C18 : 1ω7c and/or C18 : 1ω6c; 6.0 %). Its major polar lipids were phosphatidylglycerol, phosphatidylethanolamine, diphosphatidylglycerol, one unidentified aminolipid and five unknown polar lipids. The DNA G+C content was 42.6 mol%. Strain ANRC-JHZ47T showed the highest 16S rRNA gene sequence similarity to Marinomonas arenicola KMM 3893T (97.9 %), followed by Marinomonas primoryensis KMM 3633T (97.6 %), Marinomonas profundimaris D104T (97.2 %) and Marinomonas pollencensis IVIA-Po-185T (97.0 %). Furthermore, the average nucleotide identity values between strain ANRC-JHZ47T and M. arenicola KMM 3893T, M. primoryensis KMM 3633T and M. profundimaris D104T were 79.8, 74.0, and 74.1 %, respectively. The in silico DNA–DNA hybridization values between them were 22.5±2.5, 20.4±2.3 and 19.9±2.3 %, respectively. Based on the results of phenotypic and phylogenetic analyses, strain ANRC-JHZ47T is considered to represent a novel species of the genus Marinomonas , for which the name Marinomonas flavescens sp. nov. is proposed. The type strain is ANRC-JHZ47T (=MCCC 1K03604T=KCTC 72113T). %U https://www.microbiologyresearch.org/content/journal/ijsem/10.1099/ijsem.0.003631