1887

Abstract

A Gram-stain-negative, oxidase-negative, catalase-positive, facultative anaerobe, designated XJ16, was isolated from a marine solar saltern on the coast of Weihai, China. Cells of strain XJ16 were long and rod-shaped. The colonies were ochre in colour and were able to reduce nitrate to nitrite. Optimal growth occurred at 33–37 °C (range, 20–45 °C) and in the presence of 8–10 % (w/v) NaCl (range, 2–20 %). The pH range for growth was found to be 6.5–9.5, with optimum growth at pH 7.5–8.0. Phylogenetic analysis based on the 16S rRNA gene sequence demonstrated that strain XJ16 was related to the phylum . The most closely related neighbours were species of the genus , and the 16S rRNA gene sequence of strain XJ16 shared 93.1 % similarity with that of HL-EbGr7 and 93.0 % similarity with that of ALJD. The G+C content of the genomic DNA was 65.9 mol% (HPLC). The sole respiratory quinone was Q-8, and the predominant cellular fatty acids (>10 %) were iso-C 2-OH/Cω7, C and C 10-CH. The predominant polar lipids in strain XJ16 were diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine and phosphatidylcholine. Based on these phylogenetic, physiological and biochemical characteristics, strain XJ16 should be classified representing a novel species of a new genus within the family , for which the name gen. nov., sp. nov. is proposed. The type strain of the type species is XJ16 (=KCTC 42259=MCCC 1H00120=CICC 23817).

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2017-04-01
2024-03-29
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