1887

Abstract

In this study, two bacterial strains designated B210 and SEH01, isolated from coastal sediment sampled in Weihai, PR China, were characterized using a polyphasic approach. Strains were Gram-stain-negative, facultative anaerobic, rod-shaped and motile. According to the results of phylogenetic analyses based on their 16S rRNA genes, these two strains should be classified under the order Bradymonadales and they both show <90 % sequence similarities with Bradymonas sediminis FA350. Moreover, strain B210 showed 98.6 % sequence similarity to strain SEH01. Genomic characteristics including average nucleotide identity and in silico DNA–DNA hybridization values clearly separated strain B210 from strain SEH01. The sole quinone of these two strains was menaquinone MK-7, and the major polar lipids were diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine and an unidentified lipid. Iso-C15 : 0 was the major fatty acid in both strains B210 and SEH01, and iso-C14 : 0 3-OH was also a major fatty acid for strain SEH01. Based on the polyphasic analysis, these two strains represent two novel species of a new genus within the family Bradymonadaceae . Consequently, the novel genus Lujinxingia gen. nov. is proposed, containing two new species Lujinxingia litoralis gen. nov. sp. nov. and Lujinxingia sediminis sp. nov., with strain B210 (=KCTC 42951=CGMCC 1.16770) and strain SEH01 (=KCTC 42950=DSM 101859) as the type strains, respectively.

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/content/journal/ijsem/10.1099/ijsem.0.003556
2019-06-25
2019-08-22
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