Antonie van Leeuwenhoek

, Volume 34, Issue 1, pp 257–262 | Cite as

DNA base composition of yellowErwinia strains

  • J. De Ley
Article

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.

Keywords

Mandel Thermal Denaturation Trisodium Citrate Cesium Chloride Compositional Distribution 

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Copyright information

© Swets & Zeitlinger 1968

Authors and Affiliations

  • J. De Ley
    • 1
  1. 1.Laboratory for Microbiology and Microbial Genetics, Faculty of SciencesState UniversityGentBelgium

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