Taxonomy of the Clostridia: ribosomal ribonucleic acid homologies among the species.

@article{Johnson1975TaxonomyOT,
  title={Taxonomy of the Clostridia: ribosomal ribonucleic acid homologies among the species.},
  author={Jerry Johnson and Barbara Francis},
  journal={Journal of general microbiology},
  year={1975},
  volume={88 2},
  pages={229-44}
}
rRNA homologies have been determined on reference strains representing 56 species of Clostridium. Competition experiments using tritium-labelled 23S rRNA were employed. The majority of the species had DNA with 27 to 28% guanine plus cytosine (%GC). These fell into rRNA homology groups I and II, which were well defined, and a third group which consisted of species which did not belong in groups I and II. Species whose DNA was 41 to 45% GC comprised a fourth group. Thirty species were placed into… CONTINUE READING