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Lookup NU author(s): Dr James StachORCiD, Professor Michael Goodfellow
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Forty strains isolated from soil taken from a hay meadow were assigned to the genus Dactylosporangium on the basis of colonial properties. 16S rRNA gene sequence analysis showed that the isolates formed a group that was most closely related to the type strain of Dactylosporangium aurantiacum, but well separated from other Dactylosporangium type strains and from 'Dactylosporangium salmoneum' NRRL B-16294. Twelve of 13 representative isolates had identical 16S rRNA gene sequences and formed a subclade that was distinct from corresponding phyletic lines composed of the remaining isolate, strain BK63(T), the 'D. salmoneum' strain and the type strains of recognized Dactylosporangium species. DNA DNA relatedness data indicated that representatives of the multi-membered 16S rRNA gene subclade, isolate BK63(T) and the 'D. salmoneum' subclade formed distinct genomic species; all of these organisms had chemotaxonomic and morphological properties consistent with their classification in the genus Dactylosporangium. They were also distinguished from one another and from the type strains of recognized Dactylosporangium species based on a range of phenotypic properties. Combined genotypic and phenotypic data showed that isolate BK63(T), isolates BK51(T), BK53 and BK69, and strain NRRL B-16294(T) should be classified in the genus Dactylosporangium as representing novel species. The names proposed for these species are Dactylosporangium luridum sp. nov. (type strain BK63(T) =DSM 45324(T) =KACC 20933(T) =NRRL B-24775(T)), Dactylosporangium luteum sp. nov. (type strain BK51(T) = DSM 45323(T) =KACC 20899(T) =NRRL B-24774(T)) and Dactylosporangium salmoneum sp. nov., nom. rev. (type strain NRRL B-16294(T) =ATCC 31222(T) =DSM 43910(T) =JCM 3272(T) =NBRC 14103(T)).
Author(s): Kim BY, Stach JEM, Weon HY, Kwon SW, Goodfellow M
Publication type: Article
Publication status: Published
Journal: International Journal of Systematic and Evolutionary Microbiology
Year: 2010
Volume: 60
Pages: 1813-1823
Print publication date: 01/08/2010
ISSN (print): 1466-5026
ISSN (electronic): 1070-6259
Publisher: Society for General Microbiology
URL: http://dx.doi.org/10.1099/ijs.0.016541-0
DOI: 10.1099/ijs.0.016541-0
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