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Interaction patterns between potato virus Y and eIF4E-mediated recessive resistance in the Solanaceae
Benoît Moury1, Bérenger Janzac2, Youna Ruellan3
1INRA, UR407, Pathologie Végétale, Domaine Saint Maurice, Montfavet, France moury@avignon.inra.fr.
Journal of Virology
|June 20, 2014
Summary
Potato virus Y (PVY) interactions with Solanaceae plants deviate from the matching-allele model due to pleiotropic mutations. These mutations allow rapid host range expansion, complicating sustainable disease control strategies.
Area of Science:
- Plant pathology
- Virology
- Evolutionary biology
Background:
- Infectivity matrices reveal host-parasite interactions crucial for evolution and disease control.
- Two models, gene-for-gene (nested) and matching-allele (modular), describe plant-virus interactions.
Purpose of the Study:
- To analyze the infectivity matrix structure between Potato virus Y (PVY) and Solanaceae plants with different eIF4E alleles.
- To investigate if the PVY-Solanaceae interaction fits the matching-allele model.
Main Methods:
- Analysis of infectivity data from PVY inoculations on Solanaceae hosts.
- Comparison of observed infectivity patterns with predicted modular patterns from the matching-allele model.
Main Results:
- The PVY-Solanaceae interaction did not exhibit the expected modular pattern of the matching-allele model.
- PVY mutations showed frequent pleiotropic effects, adapting the virus to multiple host genotypes simultaneously.
Conclusions:
- Pleiotropic mutations in PVY enable rapid host range expansion, challenging existing interaction models.
- These findings necessitate re-evaluation of sustainable disease management strategies for PVY, such as varietal mixtures.
