1887

Abstract

Three Gram-negative, motile, aerobic bacteria were isolated from cultures of the marine red alga . Phylogenetic analysis based on 16S rRNA gene sequences revealed that the novel strains were closely related to CL-SK30 (97.9 % 16S rRNA gene sequence similarity) and E6 (96.2 %). 16S rRNA gene sequence similarity between E6 and CL-SK30 was 97.9 %. The DNA G+C contents of the isolates (49.4–50.0 mol%) were similar to those of DSM 19524 (52.3 mol%) and JCM 15144 (50.3 mol%). From these results, it was difficult to differentiate the genus from the genus . DNA–DNA hybridization demonstrated that the isolates belonged to a single species. The isolates could also be distinguished from and on the basis of chemotaxonomic and phenotypic features, including fatty acid composition (particularly Cω7), growth with 6–9 % (w/v) NaCl, carbon utilization, oxidation patterns and so on. A novel species of the genus is proposed to accommodate the three isolates, with the name sp. nov. The type strain is LCM-3 ( = LMG 25872 = NBRC 107169). Furthermore, it is proposed that should be transferred from the genus to the genus , with the name comb. nov. (type strain E6 = CGMCC 1.7002 = JCM 15144).

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2012-01-01
2019-10-22
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