1887

Abstract

Strain Eup a-8, isolated from a torch coral Euphyllia glabrescens, was characterized using a polyphasic taxonomy approach. Cells of strain Eup a-8 were Gram-staining-negative, aerobic, motile by means of a single polar flagellum, poly-β-hydroxybutyrate-containing, rod-shaped and formed white colonies. Optimal growth occurred at 25–30 °C, pH 7–8, and in the presence of 2 % NaCl. Phylogenetic analyses based on 16S rRNA gene sequences showed that strain Eup a-8 belonged to the genus Thalassotalea and showed the highest levels of sequence similarity with respect to Thalassotalea ganghwensis JC2041 (97.1 %). Strain Eup a-8 contained C17 : 1ω8c, summed feature 3 (C16 : 1ω7c and/or C16 : 1ω6c), iso-C14 : 0 and iso-C16 : 0 as the predominant fatty acids. The only isoprenoid quinone was Q-8. The major polar lipids were phosphatidylethanolamine, phosphatidylglycerol and one uncharacterized phospholipid. Genomic DNA G+C content of strain Eup a-8 was 41.5 mol%. The DNA–DNA hybridization value for strain Eup a-8 with Thalassotalea ganghwensis JC2041 was less than 70 %. Differential phenotypic properties, together with the phylogenetic inference, demonstrate that strain Eup a-8 should be classified as a novel species of the genus Thalassotalea , for which the name Thalassotalea coralli sp. nov. is proposed. The type strain is Eup a-8 (=BCRC 80967=LMG 29478=KCTC 52169).

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2017-11-16
2019-10-21
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