Faivre-Rampant Odile, Bily A., Berri Stefano, Tharreau Didier, Schweizer P., Morel J.B., Nottéghem Jean-Loup, Guiderdoni Emmanuel, Piffanelli Pietro.
2005. Oryza sativa - magnaporthe grisea: A model interaction for the study of non-host interaction in plants.
In : Société française de phytopathologie, VIème congrés, 23-24-25 février 2005, Toulouse : programme et résumés des communications. SFP, INRA, CNRS, ENSAT-INP, UPS, IFR FR40
Résumé : Resistance shown by a plant species to the majority of potentially pathogenic microbes is known as non-host resistance. The events leading to non-host resistance in plants represents one of the least understood phenomena and a remaining challenge in the field of plant-microbe interactions. Non-host resistance also represents one of the most promising defence mechanisms in developing durable resistance against plant pathogens, namely due to its effectiveness against a broad range of pathogen species and its durability in nature compared to race-specific R gene-dependent resistance. Rice-Magnaporthe grisea is a model pathosystem for race-specific cereal disease resistance study. At the species level, Magnaporthe grisea attack more than 50 monocots. However, at the strain level, this fungus exhibits a narrow host spectrum. We are currently developing a biological model using rice cultivars and several non-host M grisea strains (pathogenic on wheat and maize) to elucidate mechanisms implicated in non-host interaction. Cytological analysis will help us to pinpoint where the fungus is blocked in rice- M. grisea non-host interactions. Transcriptome analyses will enable us to identify non-host differentially expressed genes. A reverse genetic strategy is underway to target rice T-DNA insertion mutants (Genoplante) that could be potentially affected in non-host resistance. It is expected that this model will shade some light into the genetic basis of non-host resistance defining the signalling and effectors components involved in these phenomena in rice and applicable to other cereal species. (Texte intégral)
Mots-clés Agrovoc : Oryza sativa, Magnaporthe grisea, relation hôte pathogène, modèle, génie génétique, cytologie
Mots-clés complémentaires : Interaction hote-parasite
Classification Agris : H20 - Maladies des plantes
F30 - Génétique et amélioration des plantes
Auteurs et affiliations
- Faivre-Rampant Odile, CIRAD-AMIS-UMR PIA (FRA)
- Bily A.
- Berri Stefano
-
Tharreau Didier, CIRAD-AMIS-UMR BGPI (FRA)
ORCID: 0000-0003-3961-6120
- Schweizer P.
- Morel J.B.
- Nottéghem Jean-Loup
- Guiderdoni Emmanuel, CIRAD-AMIS-UMR PIA (FRA)
- Piffanelli Pietro, CIRAD-AMIS-UMR PIA (FRA)
Autres liens de la publication
Source : Cirad - Agritrop (https://agritrop.cirad.fr/527021/)
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