1887

Abstract

A cream-coloured, Gram-negative, aerobic, non-motile moderately thermophilic, rod-to-irregular-shaped bacterium, CC-GIMAT-2, was isolated from a coastal hot spring of Green Island (Lutao), located off Taituang, Taiwan, on marine agar 2216. The 16S rRNA gene sequence analysis and subsequent comparisons showed that it was placed into the genus with 97.4 % similarity to ITI-1157, and a lower sequence similarity to all other species of the genus . Reconstruction of phylogenetic trees indicated that strain CC-GIMAT-2 clustered within the genus . Robust tree topology for the genus including the new strain was only obtained by including all type strains but not if the analysis was limited to few selected taxa. The quinone system contained exclusively ubiquinone Q-10 and the fatty acid profile consisted mainly of Cω7, 11-methyl Cω7 and C3-OH. The predominant polar lipids were diphosphatidylglycerol, phosphatidylglycerol and an unidentified aminolipid. Other lipids were detected in moderate to minor amounts. The characteristic feature of the polyamine pattern was the predominant triamine spermidine. On the basis of the 16S rRNA gene sequence analysis and of the chemotaxonomic and physiological data, strain CC-GIMAT-2 represents a novel species of the genus , for which the name sp. nov. is proposed. The type strain is CC-GIMAT-2 ( = CCUG 59209 = LMG 25539 = CCM 7758).

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2013-07-01
2019-10-23
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