Photobacterium mangrovi sp. nov., isolated from mud sediment

Abstract

Abstract A Gram-stain-negative, facultative anaerobic, rod-shaped strain, named S-FG-1T, was isolated from mud sediment samples collected from mangroves in Zinian Town. The novel strains, S-FG-1T, was abled to grow at 0.5–7% NaCl (optimum, 0.5–2%), 10–42°C (optimum, 28°C) and pH 6–8 (optimum, pH 6). Phylogenetic analysis based on the 16S rRNA gene sequence indicated that strain S-FG-1T was a member of the genus Photobacterium with high similarity to Photobacterium ganghwense FR 1311T (97.91%), Photobacterium arenosum CAU 1568T (97.09%) and Photobacterium atrarenae M3-4T (96.18%). The polar lipids consisted of phosphatidylethanolamine, phosphatidylglycerol and aminophospholipid. The major respiratory quinone was ubiquinone-8. The predominant cellular fatty acids were summed feature 3 (C16:1ω7c/16:1ω6c) and summed feature 8 (C18:1ω5c/18:0). The whole genome size of strain S-FG-1T was 5.04Mb with 53.6mol% G + C content.These taxonomic data support S-FG-1T as representing a novel Photobacterium species, for which the name Photobacterium mangrovi sp. nov. is proposed. The type strain of this novel species is S-FG-1T (= KCTC 8388T = MCCC 1A19761T ).