1887

Abstract

A novel Gram-negative, aerobic, catalase- and oxidase-positive, non-sporulating, non-motile, rod-shaped bacterium, designated strain UST081027-248, was isolated from seawater of the Red Sea. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain UST081027-248 fell within the genus . Levels of 16S rRNA gene sequence similarity between the novel strain and the type strains of species ranged from 95.3 % (with ) to 98.2 % (with ). However, levels of DNA–DNA relatedness between strain UST081027-248 and the type strains of closely related species were below 70 %. Optimal growth of the isolate occurred in the presence of 2.0 % NaCl, at pH 8.0–9.0 and at 28–36 °C. The isolate did not produce bacteriochlorophyll . The predominant cellular fatty acids were Cω6, summed feature 8 (Cω6 and/or Cω7) and C 2-OH. The genomic DNA G+C content of strain UST081027-248 was 60.4 mol%. Phenotypic properties and phylogenetic distinctiveness clearly indicated that strain UST081027-248 represents a novel species of the genus , for which the name sp. nov. is proposed. The type strain is UST081027-248 ( = JCM 17468 = NRRL 59511).

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2012-06-01
2020-01-22
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