Skip to Main content Skip to Navigation
Journal articles

Different mutations in the genome-linked protein VPg of potato virus Y confer virulence on the pvr2 3 resistance in pepper

Abstract : Five different amino acid substitutions in the VPg of Potato virus Y were shown to be independently responsible for virulence toward pvr23 resistance gene of pepper. A consequence of these multiple mutations toward virulence involving single nucleotide substitutions is a particularly high frequency of resistance breaking (37% of inoculated plants from the first inoculation) and suggests a potentially low durability of pvr23 resistance. These five mutants were observed with significantly different frequencies, one of them being overrepresented. Genetic drift alone could not explain the observed distribution of virulent mutants. More plausible scenarios were obtained by taking into account either the relative substitution rates, the relative fitness of the mutants in pvr23 pepper plants, or both.
Complete list of metadata

https://hal.inrae.fr/hal-02995634
Contributor : Veronique Decognet <>
Submitted on : Monday, November 9, 2020 - 11:37:54 AM
Last modification on : Friday, February 5, 2021 - 4:10:12 AM

Links full text

Identifiers

Collections

Citation

Valérie Ayme, Sylvie Souche, Carole Caranta, Mireille Jacquemond, Joël Chadoeuf, et al.. Different mutations in the genome-linked protein VPg of potato virus Y confer virulence on the pvr2 3 resistance in pepper. Molecular Plant-Microbe Interactions, American Phytopathological Society, 2006, 19 (5), pp.557-563. ⟨10.1094/MPMI-19-0557⟩. ⟨hal-02995634⟩

Share

Metrics

Record views

12