Taxonomy of Microcyclus and Other Nonmotile, Ring-Forming Bacteria
- 1 October 1976
- journal article
- research article
- Published by Microbiology Society in International Journal of Systematic and Evolutionary Microbiology
- Vol. 26 (4) , 505-510
- https://doi.org/10.1099/00207713-26-4-505
Abstract
The genetic relatedness of some nonmotile, ring-forming bacteria was determined by DNA base composition and base sequence homology experiments. It is proposed that 4 gas vacuolate strains with DNA base compositions of 67.1-68.8 mol% guanine plus cytosine (G + C) be placed in M. aquaticus. Nonmotile vibrioid bacteria of 51% G + C (M. flavus Raj and spirosoma strains 1 and 2) were more closely related to one another than to M. aquaticus and it is suggested that the taxonomic position of M. flavus be reconsidered in relation to the genus Spirosoma. None of the nonmotile ring-forming strains were related to 2 Pseudomonadaceae. A motile variant of a gas vacuolated strain of M. aquaticus was isolated, indicating that immotility is a questionable taxonomic criterion for inclusion in the genus Microcyclus.This publication has 3 references indexed in Scilit:
- Kinetics of renaturation of DNAJournal of Molecular Biology, 1968
- [109] Use of ultraviolet absorbance-temperature profile for determining the guanine plus cytosine content of DNAPublished by Elsevier ,1968
- A procedure for the isolation of deoxyribonucleic acid from micro-organismsJournal of Molecular Biology, 1961