Abstract
DNA base composition, expressed as % GC, was determined in 34 strains of yellow-pigmentedErwinia-like organisms from plant, animal and human origin. Organisms calledErwinia herbicola (Graham and Hodgkiss, 1967) have a % GC in the narrow range 55.0 to 56.5, with the exception of strain G 146 which has 58.6% GC. They include the formerBacterium herbicola, Erwinia lathyri, Bacterium typhi flavum and the Muraschi isolates,Erwinia milletiae with 55.8 % falls within the % GC range of theHerbicola group,Erwinia ananas is at the lower end of the group with 54.8 ± 0.4 % GC andErwinia uredovora still lower at 53.7 ± 0.7 % GC. These data and the compositional distribution of the DNA fragments do not exclude the inclusion of these organisms into the genusErwinia.
Similar content being viewed by others
References
De Ley, J. 1967. The quick approximation of DNA base composition from absorbancy ratios. Antonie van Leeuwenhock33: 203–208.
De Ley, J. andSchell, J. 1963. Deoxyribonucleic acid base composition of acetic acid bacteria. J. Gen. Microbiol.33: 243–253.
De Ley, J. andVan Muylem, J. 1963. Some applications of deoxyribonucleic acid base composition in bacterial taxonomy. Antonie van Leeuwenhock29: 344–358.
Fedorova, L. S. 1964. Nucleotide composition of deoxyribonucleic and ribonucleic acids of the agent causing toxic bacteriosis of watermelons. Mikrobiologiya33: 856–857.
Fredericq, E., Oth, A. andFontaine, F. 1961. The ultraviolet spectrum of deoxyribonucleic acids and their constitutents. J. Mol. Biol.3: 11–17.
Graham, D. C. andHodgkiss, W. 1967. Identity of Gram negative, yellow pigmented, fermentative bacteria isolated from plants and animals. J. Appl. Bacteriol.30: 175–189.
Mandel, M. 1967. DNA base composition and taxonomy ofErwinia. 2nd Intern. Conference Phytopathol. Bacteria, Oeiras, Portugal.
Marmur, J. 1961. A procedure for the isolation of deoxyribonucleic acid from micro-organisms. J. Mol. Biol.3: 208–218.
Marmur, J., Falkow, S. andMandel, M. 1963. New approaches to bacterial taxonomy. Ann. Rev. Microbiol.17: 329–372.
Muraschi, T. F., Friend, M. andBolles, D. 1965.Erwinia-like microorganisms isolated from animal and human hosts. Appl. Microbiol.13: 128–131.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
De Ley, J. DNA base composition of yellowErwinia strains. Antonie van Leeuwenhoek 34, 257–262 (1968). https://doi.org/10.1007/BF02046446
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1007/BF02046446