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  • Title: Cecembia rubra sp. nov., a thermophilic bacterium isolated from a hot spring sediment.
    Author: Duan YY, Ming H, Dong L, Yin YR, Meng XL, Zhou EM, Zhang JX, Nie GX, Li WJ.
    Journal: Int J Syst Evol Microbiol; 2015 Jul; 65(7):2118-2123. PubMed ID: 25851591.
    Abstract:
    A Gram-staining negative, rod-shaped bacterium, designated strain YIM 78110(T), was isolated from a sediment sample collected from Hehua hot spring in Tengchong, Yunnan province, south-west China. The taxonomic status of strain YIM 78110(T) was confirmed by a polyphasic approach. 16S rRNA gene sequence analysis indicated that strain YIM 78110(T) belongs to the genus Cecembia, displaying 96.8% and 94.7% sequence similarity with the two most closely related type strains, Cecembia calidifontis RQ-33(T) and Cecembia lonarensis LW9T, respectively. The low value of DNA-DNA hybridization (52.3 ± 2.3%) between strain YIM 78110(T) and its closest neighbour, Cecembia calidifontis RQ-33(T), indicated that this new isolate represented a different genomic species in the genus Cecembia. The temperature for growth ranged from 30 to 50 °C. The pH for growth ranged from pH 4.0 to 10.0, with NaCl tolerance of 0.5-6.0% (w/v). The predominant menaquinone of strain YIM 78110(T) was MK-7 and the major polar lipid was phosphatidylethanolamine. The major fatty acids were iso-C15:0 and C15:0. The DNA G+C content was 47.1 mol%. On the basis of physiological, biochemical and phylogenetic analyses, it is proposed that strain YIM 78110(T) represents a novel species of the genus Cecembia, for which the name Cecembia rubra sp. nov. is proposed. The type strain is YIM 78110(T) ( = CCTCC AB2013287(T) = DSM 28057(T)).
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