Pseudooceanicola albus sp. nov., Isolated from Mangrove Sediment within the Beibu Gulf

A nonmotile gram-negative, short, rod-shaped strain, BGMRC 2024 T , was isolated from the sediment of Rhizophora stylosa collected in the Beibu Gulf, China. The strain BGMRC 2024 T exhibited optimal growth at 25 to 28°C, pH 7.0, and in the presence of 1–4% (wt/v) NaCl. Analysis of the 16S rRNA gene sequences indicated that BGMRC 2024 T was closely related to Pseudooceanicola antarcticus CGMCC 1.12662 T (96.23% sequence similarity), P. algae Lw-13e T (96.17%), P. lipolyticus 157 T (96.16%), and P. pacificus 216_PA32_1 T (96.09%). The digital DNA-DNA hybridization (dDDH) values and the average nucleotide identity (ANI) of the strain Pseudooceanicola antarcticus CGMCC 1.12662 T were 24.7 and 77.52%, respectively. The DNA G+C content was 67.4 mol %. The main respiratory quinone was ubiquinone-10. The polar lipids of strain BGMRC 2024 T included four unidentified phospholipids, two unidentified ninhydrin-positive lipids, one unidentified ninhydrin-positive phospholipid, and three unidentified lipids. The major fatty acids were C 19:0 cyclo ω8 c , summed feature 8 (C 18:1 ω7 c and/or C 18:1 ω6 c ), and C 16:0 . Based on these results, BGMRC 2024 T represents a novel species of the genus Pseudooceanicola , for which the name Pseudooceanicola albus sp. nov. is proposed. The type strain is BGMRC 2024 T (=KCTC52117 T = DSM102086 T ).