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Deinococcus aquaticus sp nov., isolated from fresh water, and Deinococcus caeni sp nov., isolated from activated sludge

Lookup NU author(s): Dr Myung Kim, Nagamani Bora, Professor Michael Goodfellow


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The taxonomic positions of two environmental isolates from South Korea were established using a combination of genotypic and phenotypic data. The organisms, designated PB314(T) and Ho-08(T), were Gram-negative, rod-shaped and non-spore-forming and had chemotaxonomic properties consistent with their classification in the genus Deinococcus 16S rRNA gene tree, the highest sequence similarities being shown to the type strains of Deinococcus grandis (96.3-96.7%) and Deinococcus indicus (96.3-96.4%). The isolates shared relatively high 16S rRNA gene sequence similarity (98.1%) but had a DNA-DNA relatedness value of only 22%. Chemotaxonomic data revealed that both strains possess quinone system MK-8 as the predominant compound, C(16:1)w7c and C-16:0 as major fatty acids and ornithine as a diamino acid in the peptidoglycan structure, corroborating our assignment of the strains to the genus Deinococcus. The results of phylogenetic analyses based on 1 SS rRNA gene sequences, DNA DNA relatedness values and physiological and biochemical tests clearly demonstrated that the two strains represent distinct species. On the basis of these data, two novel species, Deinococcus aquaticus sp. nov. (type strain PB314(T) = KCTC 12552(T) = NBRC 101311(T)) and Deinococcus caeni sp. nov. (type strain Ho-08(T) =KCTC 12553(T) =NBRC 101312(T)), are proposed.

Publication metadata

Author(s): Im WT, Jung HM, Ten LN, Kim MK, Bora N, Goodfellow M, Lim S, Jung J, Lee ST

Publication type: Article

Publication status: Published

Journal: International Journal of Systematic and Evolutionary Microbiology

Year: 2008

Volume: 58

Issue: 10

Pages: 2348-2353

ISSN (print): 1466-5026

ISSN (electronic): 1070-6259

Publisher: Society for General Microbiology


DOI: 10.1099/ijs.0.64082-0


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Funder referenceFunder name
21C Frontier Microbial Genomics and Application Center Program
MG05-0101-4-0Ministry of Science Technology