Sulfitobacter albidus sp. nov., isolated from marine sediment of Jeju Island

Abstract

Strain JK7-1^T isolated from marine sediment collected from Jeju Island of South Korea was strictly aerobic, Gram-stain-negative, catalase-positive, oxidase-positive, motile, and rod-shaped bacterium that is circular and convex with white pigment. Strain JK7-1^T could grow at 10-30 °C and pH 6-9 with 1-6% (w/v) NaCl. Phylogenetic analysis based on its 16S rRNA gene sequence indicated that strain JK7-1^T belonged to genus Sulfitobacter, sharing high sequence similarities with Sulfitobacter undariae W-BA2^T (97.90%), Sulfitobacter donghicola KCTC 12864^T (97.61%), and Sulfitobacter mediterraneus KCTC 32188^T (97.47%). Strain JK7-1^T possessed only ubiquinone-10 (Q-10) as a sole respiratory quinone and summed feature 8 as the major fatty acid (81.02%). A dominant polar lipid phosphatidylglycerol was identified in strain JK7-1^T. Strain JK7-1^T had a complete genome of 3,441,674 bp in length with a mean G + C content of 63.96%. Polyphasic and genomic analyses revealed that strain JK7-1^T represented a novel species in the genus Sulfitobacter, for which a name of Sulfitobacter albidus sp. nov. was proposed. Its type strain is JK7-1^T (= KCTC 72819^T = NBRC 114632^T = KMM 6821^T).

Keywords: Genome; Marine sediment; Novel species; Polyphasic; Sulfitobacter albidus.