Abstract
A novel Gram-stain-negative, aerobic, oxidase-positive, motile, dimorphic rod bacterium, with a polar flagellum or a polar prostheca, designated as strain WD6-1T, was isolated from a sediment sample collected from a marine solar saltern located in Weihai, PR China. Growth of strain WD6-1T was observed at 15-45 °C (optimum, 37-40 °C). The pH range for growth was pH 6.0-9.5 (optimum, pH 7.0-7.5) while the NaCl concentration was 1.0-16.0 % (w/v; optimum, 5.0 %). The most closely related species was Marinicauda algicola (97.0 % 16S rRNA gene sequence similarity). The DNA G+C content of strain WD6-1T was 69.5 mol% and the sole respiratory quinone was ubiquinone 10 (Q-10). The major cellular fatty acids (>10 %) of strain WD6-1T included summed feature 8 (comprising C18 : 1ω7c and/or C18 : 1ω6c), C18 : 0 and C17 : 0, and the major polar lipids were glucuronopyranosyldiglyceride, monoglycosyldiglyceride and sulfo-quinovosyl diacylglycerol. Based on the results of phylogenetic, genotypic and phenotypic analyses, the isolate is representative of a new member of the genus Marinicauda, for which the name Marinicaudasalina sp. nov. is proposed. The type strain is WD6-1T (=KCTC 62348T=MCCC 1H00282T).
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