%0 Journal Article %A Downes, J. %A Munson, M. %A Wade, W. G. %T Dialister invisus sp. nov., isolated from the human oral cavity %D 2003 %J International Journal of Systematic and Evolutionary Microbiology, %V 53 %N 6 %P 1937-1940 %@ 1466-5034 %R https://doi.org/10.1099/ijs.0.02640-0 %K PRAS, pre-reduced anaerobically sterilized %I Microbiology Society, %X Six strains of anaerobic, Gram-negative coccobacilli isolated from the root canals of patients with endodontic infections (five strains) and from a deep periodontal pocket (one strain) were subjected to a comprehensive range of phenotypic and genetic tests and were found to comprise a homogeneous group. Following 16S rRNA gene sequence analysis, they were found to be most closely related to Dialister pneumosintes, with 93 % sequence similarity between the two taxa. A novel species, Dialister invisus sp. nov., is proposed. Biochemically, the species is largely unreactive and is asaccharolytic, with only traces of acetate and propionate detected as metabolic end-products. The G+C content of the DNA of D. invisus strains is 45–46 mol%. The type strain is E7.25T (=CCUG 47026T=DSM 15470T). %U https://www.microbiologyresearch.org/content/journal/ijsem/10.1099/ijs.0.02640-0