Affiliation:
1. Laboratoire de Biologie Cellulaire, Centre National de Recherches Agronomiques, 78000 Versailles, France
Abstract
A new temperate bacteriophage (phage Ψ) of
Agrobacterium tumefaciens
strain B91 is described. Many octopine-utilizing strains of
A. tumefaciens
harbor prophage Ψ or a phage that is similar if not identical to it. This phage has a very narrow host range, and we found that its growth is strongly reduced in strains which carry an octopine pTi plasmid. When sensitive bacteria are infected with Ψ, 1 to 3% of the survivors carry mutations on the chromosome, as well as on the pTi plasmid. This phenomenon appears to be a direct consequence of lysogenization. The possible mechanisms whereby such Ψ-induced mutations occur are discussed.
Publisher
American Society for Microbiology
Subject
Virology,Insect Science,Immunology,Microbiology
Cited by
6 articles.
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