Author:
Ferragut C.,Gavini F.,Izard D.,Leclerc H.
Abstract
The deoxyribonucleic acid (DNA) of 106 strains of Enterobacteria was analysed for the guanine + cytosine (GC) content. These strains, whose origin and principal characters are described in the text, belong to the genera Citrobacter (C. freundii H2S−) and Levinea (L. malonatica and L. amalonatica). Four other groups or classes named C,D,E, and F could not be classified on the base of the usual phenotypic criteria. DNA from the strains of Levinea has a GC% of 50.3 to 53.3, while DNA from the strains of C. freundii H2S− has a GC % of 48.6 to 51.7. The representative values from the new classes are C, 50.9%; D, 54%; E, 52.7%; F, 49.5%. For the latter a genomic heterogeneity was shown, expressing itself as two subpopulations whose average GC%are 51.7 and 48.6 respectively. Statistical analysis of the averages give a significant individuality to these new classes.
Publisher
Canadian Science Publishing
Subject
Genetics,Molecular Biology,Applied Microbiology and Biotechnology,General Medicine,Immunology,Microbiology
Cited by
10 articles.
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