A gamma- and UV-radiation-tolerant, pale-pink strain (TDMA-uv53) was isolated from a freshwater sample collected at Misasa (Tottori, Japan), after exposure of the water sample to UV radiation. The cells stained Gram-positive and were non-motile, rod-shaped and non-spore-forming. The DNA G+C content of the strain was 69.1 mol%. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain TDMA-uv53 belongs to the genus , the highest sequence similarities being found with PO-04-19-125 (96 %), ME-04-01-32 (96 %), PO-04-20-132 (95 %), VCD115 (91.5 %), KR-140 (91.0 %) and KR-87 (91.0 %). Major fatty acids were iso-15 : 0, 15 : 16, 15 : 0, 16 : 0 and summed feature 3 (iso-15 : 0 2-OH and/or 16 : 17). MK-8 was the predominant respiratory quinone. Phylogenetic distinctiveness and unique phenotypic characteristics differentiated strain TDMA-uv53 from closely related species. The results of our polyphasic taxonomic analyses suggested that TDMA-uv53 represents a novel species, for which the name sp. nov. is proposed. The type strain is TDMA-uv53 (=JCM 14370 =NBRC 102118 =CCUG 53612).


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[PDF file of Supplementary Figs S1 and S2](76 KB)


Scanning electron micrograph of cells of strain TDMA-uv53 grown for 3 days on NA agar at 37 °C. Cells are long rods, occurring singly, in pairs or short chains. Bar, 1.0 µm.


[PDF file of Supplementary Tables S1 and S2](228 KB)

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