Salinimonas marina sp. nov. Isolated from Jeju Island Marine Sediment

Curr Microbiol. 2021 Aug;78(8):3321-3327. doi: 10.1007/s00284-021-02576-9. Epub 2021 Jun 25.


A Gram-stain-negative, rod-shaped, and strictly aerobic bacterium designated strain G2-bT was isolated from the marine sediment around Jeju Island, South Korea. Strain G2-bT was found to be catalase- and oxidase-positive, white-pigmented, motile with polar flagellum, and to grow optimally at 25 °C, pH 7.0 in the presence of 4% (w/v) NaCl. Phylogenetic analysis based on the 16S rRNA gene sequence revealed that strain G2-bT belongs to the genus Salinimonas and was closely related Salinimonas sediminis N102T (96.7% sequence similarity), Salinimonas iocasae KX18D6T (95.4%), Salinimonas lutimaris DPSR-4T (94.7%), and Salinimonas chungwhensis BH030046T (94.6%). Strain G2-bT possessed ubiquinone 8 as the sole respiratory quinone, summed feature 3 and summed feature 8 as the major fatty acids, and phosphatidylethanolamine and phosphatidylglycerol as the major polar lipids. The genome size and G + C content of the strain G2-bT were determined to be 3,765,169 bp, and 49.7%, respectively, as a complete circular genome. Based on the genomic analyses (e.g., average nucleotide identity and digital DNA-DNA hybridization), the strain G2-BT likely represents a new species in the genus Salinimonas, for which we propose to name this novel bacterium Salinimonas marina sp. nov., and the type strain is designated G2-BT (= KCTC 72817T = VTCC 910110T).

MeSH terms

  • Alteromonadaceae
  • Bacterial Typing Techniques
  • DNA, Bacterial / genetics
  • Fatty Acids / analysis
  • Geologic Sediments*
  • Phospholipids*
  • Phylogeny
  • RNA, Ribosomal, 16S / genetics
  • Republic of Korea
  • Sequence Analysis, DNA


  • DNA, Bacterial
  • Fatty Acids
  • Phospholipids
  • RNA, Ribosomal, 16S

Supplementary concepts

  • Salinimonas chungwhensis
  • Salinimonas lutimaris
  • Salinimonas sediminis