Two Gram-stain-negative, obligately aerobic, non-motile, short rod-shaped bacteria, designated IMCC43871T and IMCC45206T, were isolated from coastal surface seawater collected from the Yellow Sea and the South Sea of Korea, respectively. The two strains shared 99.2% 16S rRNA gene sequence similarity with each other and exhibited ≤ 98.4% similarity to three described Rubrivirga species. Average nucleotide identity (ANI) and digital DNA–DNA hybridization (dDDH) values between IMCC43871T and IMCC45206T were 88.5% and 36.3%, respectively, confirming that they represent two distinct species. Their ANI (≤ 77.7%) and dDDH (≤ 21.4%) values relative to the type strains of the genus Rubrivirga further supported the recognition of strains IMCC43871T and IMCC45206T as two novel species within the genus. The complete genomes of IMCC43871T (4.17 Mb, 71.8% G + C content) and IMCC45206T (4.17 Mb, 72.8% G + C content) fall within the known genomic range of the genus. Cellular fatty acid, quinone, and polar lipid profiles were consistent with the chemotaxonomic features of the genus Rubrivirga, supporting their affiliation with the genus. Based on phylogenetic, genomic, and phenotypic evidence, strains IMCC43871T and IMCC45206T are proposed as two novel species, Rubrivirga aquatilis sp. nov. and Rubrivirga halophila sp. nov., respectively. The type strains are IMCC43871T (= KCTC 102072T = NBRC 116463T) and IMCC45206T (= KCTC 92925T = NBRC 116172T = CCTCC AB 2023136T).
Two rod-shaped, Gram-positive, spore-forming, motile, and strictly anaerobic bacteria, FM7315T and FM7330T were isolated from Myeolchi-jeot, a traditional Korean fermented anchovy. Phylogenetic and phylogenomic analyses based on the 16S rRNA gene and genome sequences revealed that strains FM7315T and FM7330T represent novel species within the genus Haloimpatiens. The genome sizes of strains FM7315T and FM7330T were 3,052,517 bp and 4,194,114 bp, respectively, with G + C contents of 29.7 mol% and 28.0 mol%, respectively. Strain FM7315T exhibited growth at 20–37°C, 0–2% NaCl, and pH range of 5.0–8.0, whereas strain FM7330T grew at 25–45°C, 0–4% NaCl, and pH range of 5.0–9.0. Strain FM7315T contains C14:0, C16:0, C18:1 ω9c, Summed Feature 3 (C16:1 ω7c/C16:1 ω6c), and Summed Feature 8 (C18:1 ω7c/C18:1 ω6c) as major fatty acids, along with diphosphatidylglycerol, phosphatidylglycerol, glycolipid, two aminophospholipids, and five unidentified lipids. Strain FM7330T contains C16:0, C17:1 ω8c, and C18:1 ω9c as major fatty acids, along with diphosphatidylglycerol, two phosphatidylglycerols, four aminophospholipids, and six unidentified lipids. Based on their phenotypic, chemotaxonomic, and molecular characteristics, strains FM7315T and FM7330T represent two novel species of the genus Haloimpatiens, for which the names Haloimpatiens sporogenes sp. nov. (FM7315T = KCTC 25939T = JCM 37574T) and Haloimpatiens myeolchijeotgali sp. nov. (FM7330T = KCTC 25938T = JCM 37575T) have been proposed.
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