Current Microbiology

, Volume 18, Issue 5, pp 307-311

First online:

Characteristics and comparative study of fiveRhizobium meliloti bacteriophages

  • Michel WerquinAffiliated withLaboratory of Applied Microbiology, Agricultural and Nutritional Institute of Lille, University of Science and Technology of Lille Flandres-Artois
  • , Hans-Wolfgang AckermannAffiliated withDepartment of Microbiology, Faculty of Medicine, Laval University
  • , Roger C. LevesqueAffiliated withDepartment of Microbiology, Faculty of Medicine, Laval University

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FiveRhizobium meliloti bacteriophages isolated from soil or lysogenic bacteria and belonging to Bradley's group B or theSiphoviridae family of tailed phaes were studied. They are of identical morphology, showing isometric heads and long, noncontractile tails with transverse bars. They are temperate and closely related by host range, DNA restriction endonuclease patterns and homology, DNA mass, serological properties, adsorption velocity, and latent period. However, the phages can be divided into three groups on the basis of burst size and frequency of lysogenization.