Strain SLG5B-19, isolated from an oil-polluted saline soil in Gudao in the coastal Shengli Oilfield, eastern China, was Gram-negative with monoprosthecae or bipolar prosthecae and buds on the prosthecal tips. Growth occurred at NaCl concentrations between 0 and 7 % (w/v), at temperatures between 4 and 45 °C, and at pH 6.0–9.0. Strain SLG5B-19 had Q-9 as the major respiratory quinone and unsaturated C 7 as the predominant cellular fatty acid. The G+C content of the genomic DNA was 59.5 mol%. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain SLG5B-19 belonged to a clade with the genera and in the class . However, 16S rRNA gene sequence similarities of strain SLG5B-19 to the phylogenetically most closely related strains, i.e. the type strains of and , were 95.8 and 94.5 %, respectively. In addition, the 16S rRNA gene sequence of strain SLG5B-19 had 24 signature nucleotides that were identical to those of the type strain of . Based on phylogenetic analysis of 16S rRNA gene sequences, strain SLG5B-19 could be allocated to the genus . However, distinct phenotypic differences were observed between strain SLG5B-19 and the type strain of . It is therefore proposed that strain SLG5B-19 represents a novel species in the genus , sp. nov. The type strain is SLG5B-19 (=CGMCC 1.6497=LMG 23927).


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