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Evolution of compatibility range in the rice-Magnaporthe oryzae system: An uneven distribution of R genes between rice subspecies

Gallet Romain, Fontaine Colin, Bonnot François, Milazzo Joëlle, Tertois Christophe, Adreit Henri, Ravigné Virginie, Fournier Elisabeth, Tharreau Didier. 2016. Evolution of compatibility range in the rice-Magnaporthe oryzae system: An uneven distribution of R genes between rice subspecies. Phytopathology, 106 (4) : pp. 348-354.

Journal article ; Article de recherche ; Article de revue à facteur d'impact
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Quartile : Q1, Sujet : PLANT SCIENCES

Liste HCERES des revues (en SHS) : oui

Thème(s) HCERES des revues (en SHS) : Psychologie-éthologie-ergonomie

Abstract : Efficient strategies for limiting the impact of pathogens on crops require a good understanding of the factors underlying the evolution of compatibility range for the pathogens and host plants, i.e. the set of host genotypes that a particular pathogen genotype can infect and the set of pathogen genotypes that can infect a particular host genotype. Until now, little is known about the evolutionary and ecological factors driving compatibility ranges in systems implicating crop plants. We studied the evolution of host and pathogen compatibility ranges for rice blast disease, which is caused by the ascomycete Magnaporthe oryzae. We challenged 61 rice varieties from three rice subspecies with 31 strains of M. oryzae collected worldwide from all major known genetic groups. We determined the compatibility range of each plant variety and pathogen genotype and the severity of each plant-pathogen interaction. Compatibility ranges differed between rice subspecies, with the most resistant subspecies selecting for pathogens with broader compatibility ranges and the least resistant subspecies selecting for pathogens with narrower compatibility ranges. These results are consistent with a nested distribution of R genes between rice subspecies. (Résumé d'auteur)

Mots-clés Agrovoc : Oryza sativa, Magnaporthe grisea, Plante hôte, Relation hôte pathogène, Pouvoir pathogène, Variété, Génotype, Interactions biologiques, Amélioration des plantes, Résistance génétique, Résistance aux organismes nuisibles, Infection, Évolution, Expérimentation

Mots-clés géographiques Agrovoc : France

Classification Agris : H20 - Plant diseases
F30 - Plant genetics and breeding

Champ stratégique Cirad : Axe 4 (2014-2018) - Santé des animaux et des plantes

Auteurs et affiliations

  • Gallet Romain, INRA (FRA)
  • Fontaine Colin, MNHN (FRA)
  • Bonnot François, CIRAD-BIOS-UMR BGPI (FRA)
  • Milazzo Joëlle, CIRAD-BIOS-UMR BGPI (FRA)
  • Tertois Christophe, CIRAD-BIOS-UMR BGPI (FRA)
  • Adreit Henri, CIRAD-BIOS-UMR BGPI (FRA)
  • Ravigné Virginie, CIRAD-BIOS-UMR PVBMT (REU) ORCID: 0000-0002-4252-2574
  • Fournier Elisabeth, INRA (FRA)
  • Tharreau Didier, CIRAD-BIOS-UMR BGPI (FRA) ORCID: 0000-0003-3961-6120

Source : Cirad-Agritrop (https://agritrop.cirad.fr/579860/)

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