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Abstract
A novel blush-red-pigmented, Gram-stain-negative, gliding, aerobic and rod- or oval-shaped bacterium, designated strain 12N15T, was isolated from sediment sampled at a marine saltern located in Wendeng, China (36° 59′ 56.49″ N, 122° 1′ 38.84″ E). Growth was observed at 10–40 °C (optimum, 28 °C), in 1.0–12.0 % NaCl (2.0–5.0 %, w/v) and at pH 6.0–9.5 (pH 7.0). The respiratory quinones were determined to be Q-10 and major fatty acids were C18 : 1ω7c and C18 : 0. The polar lipids profile of strain 12N15T included phosphatidylethanolamine, phosphatidylglycerol, diphosphatidylglycerol, aminolipid, phosphatidylcholine, one lipid and three phospholipids. The genomic DNA G+C content was 69.6 mol%. Phylogenetic analyses based on the 16S rRNA gene showed that the strain 12N15T was affiliated within the genus Jannaschia , and was most closely related to Jannaschia seohaensis KCTC 22172T. The average amino acid identity and percentage of conserved protein values between strain 12N15T and the type strain of the type species, Jannaschia helgolandensis DSM 14858T, were 70.2 % and 64.1 %, respectively. The average nucleotide identity value between strain 12N15T and J.annaschia seohaensis KCTC 22172T was 81.9 %. The phenotypic, phylogenetic and genomic analyses supported the hypothesis that strain 12N15T represents a novel species of the genus Jannaschia , for which the name Jannaschia formosa sp. nov. is proposed. The type strain is 12N15T (=MCCC 1H00325T=KCTC 62582T).
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