sp. nov., isolated from seawater adjacent to Fildes Peninsula, Antarctica.

A Gram-negative bacterium, namely strain ANRC-JHZ47, was isolated from a seawater sample collected at Biological Bay, Fildes Peninsula, Antarctica. Cells of strain ANRC-JHZ47 were rod-shaped and motile by a single polar flagellum. Strain ANRC-JHZ47 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-JHZ47 used Q-8 as the predominant respiratory quinone. Its predominant fatty acids were C (21.9 %), C (12.6 %), Ccyclo 8 (12.4 %), summed feature 3 (Cω7 and/or Cω6; 13.1 %), C 3-OH (11.3 %) and summed feature 8 (Cω7 and/or Cω6; 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-JHZ47 showed the highest 16S rRNA gene sequence similarity to KMM 3893 (97.9 %), followed by KMM 3633 (97.6 %), D104 (97.2 %) and IVIA-Po-185 (97.0 %). Furthermore, the average nucleotide identity values between strain ANRC-JHZ47 and KMM 3893, KMM 3633 and D104 were 79.8, 74.0, and 74.1 %, respectively. The 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-JHZ47 is considered to represent a novel species of the genus , for which the name sp. nov. is proposed. The type strain is ANRC-JHZ47 (=MCCC 1K03604=KCTC 72113).