PubMed · 1979 · 33 citations · 0 references
Life SciencesGeneticsMicrobiologyMicrobial GeneticsMicrobial SystematicsPhylogeneticsBacterial ClassificationBacterial SystematicsMolecular Evolution In MicrobesPhylogenetic ClassificationStrain TypingTaxonomic ClassificationDna Hybridization AssaysGenetic Relationship AnalysisMolecular Typing Of BacteriaNumerical TaxonomyPhenotypic Characterization Of IsolatesPhylogenetic Placement Of Type StrainsPhylogenetic TypingType Strain Characterization
A DNA-DNA hybridization study was carried out to determine the taxonomic position of a new group of enterobacteria (group H2) previously studied by numerical taxonomy. All the strains of this group revealed relatively high reassociation binding ratios with the centrotype; 82% of the strains of the group showed more than 69% of reassociation with the centrotype. In spite of numerical taxonomy conclusions, there was no genetic relationship with the species Enterobacter cloacae (higher reassociation binding ratio: 37%). No significant genetic relationship with the other groups of enterobacteria was found. Rahnella aquatilis was defined from phenotypic and genetic data. The strain 133 (CIP 78-65) is proposed as type strain of the species.