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Deinococcus wulumuqiensis sp. nov., and Deinococcus xibeiensis sp. nov., isolated from radiation-polluted soil

Lookup NU author(s): Professor Michael Goodfellow


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The taxonomic positions of two gamma- and UV-ray-resistant strains isolated from radiation-polluted soil in north-west China were determined in a polyphasic study. The organisms, designated R12(T) and R13(T), were Gram-stain-positive, non-spore-forming cocci, which contained MK-8 as the major respiratory quinone and C-16:1 omega 7c and C-16:0 as major fatty acids. The cell walls of strains R12(T) and R13(T) contained ornithine. Phylogenetic analysis based on 16S rRNA gene sequences and DNA DNA hybridizations showed that strains R12(T) and R13(T) are members of novel species belonging to the genus Deinococcus, with Deinococcus radiodurans DSM 20539(T) as the closest relative. The isolates R12(T) and R13(T) shared 97 and 97.1 % 16S rRNA gene similarity, respectively, and 29.5 and 33.3% DNA DNA relatedness, respectively, with D. radiodurans DSM 20539(T). The DNA G + C contents of isolates R12(T) and R13(T) were 66.7 and 63.8%, respectively. On the basis of phenotypic tests and other results, two species, Deinococcus wulumuqiensis sp. nov. (type strain R12(T) =CGMCC 1.8884(T) =NBRC 105665(T)) and Deinococcus xibeiensis sp. nov. (type strain R13(T) =CGMCC 1.8885(T) =NBRC 105666(T)), are proposed.

Publication metadata

Author(s): Wang W, Mao J, Zhang ZD, Tang QY, Xie YQ, Zhu J, Zhang LX, Liu ZH, Shi YH, Goodfellow M

Publication type: Article

Publication status: Published

Journal: International Journal of Systematic and Evolutionary Microbiology

Year: 2010

Volume: 60

Pages: 2006-2010

Print publication date: 01/09/2010

ISSN (print): 1466-5026

ISSN (electronic): 1466-5034

Publisher: Society for General Microbiology


DOI: 10.1099/ijs.0.015917-0


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Funder referenceFunder name
2007AA021300Hi-Tech Research and Development Program of China
200803034Chinese Ministry of Agriculture