title: Use of DNA hybridization values to construct three-dimensional models of fluorescent pseudomonad relationships.
abstract: Three-dimensional models of the relationships among fluorescent pseudomonads were prepared from appropriately transformed percent DNA homology values. The transformation selected was f(x) = ( (1 - HOM/HOM)200, where HOM = fractional DNA homology and 200 is a scaling factor. Model accuracy was quite good as a plot of transformed DNA homology values versus model distances was essentially linear for homology values greater than 30%. The model suggested that bacterial strains within the fluorescent pseudomonads appear to be related in a three-dimensional continuum with no clear and easy "natural" demarcation into groups (i.e., species).
mesh_terms: D004269:DNA, Bacterial / Q000032:analysis*; D008954:Models, Biological; D009690:Nucleic Acid Conformation; D009693:Nucleic Acid Hybridization; D011549:Pseudomonas / Q000145:classification*
chemical_list: D004269:DNA, Bacterial