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$Modern elite rice varieties of the \Green Revolution\ have retained a large introgression from wild rice around the Pi33 rice blast resistance locus$

Modern elite rice varieties of the \Green Revolution\ have retained a large introgression from wild rice around the Pi33 rice blast resistance locus

by Biologie et Génétique des Interactions Plantes-Agents Pathogènes ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Ecole Nationale Supérieure Agronomique de Montpellier (ENSA M)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro) , Bayer S.A.S. [France] ; Bayer AG [Germany] , Berruyer, Romain , Morel, Jean-Benoit, J.-B , Notteghem, Jean-Loup , Ballini, Elsa , Tharreau, Didier , Lebrun, Marc-Henri

in Alleles / backcrossing / blast disease / Blasts / Chromosome Mapping / Chromosomes / crops / cultivars / Gene Expression Regulation, Plant / Genealogy / Genes / Genes, Plant / Genetic loci / Genetic Predisposition to Disease / genetics / Genomes / Genomics / Genotype / genotyping / introgression / IR64 / Life Sciences / loci / Magnaporthe grisea (rice blast) / Oryza / Oryza - genetics / Oryza rufipogon / Oryza sativa / Oryza sativa (rice) / pests / Phylogeny / Phytopathology and phytopharmacy / Plant Diseases / Plant Diseases - genetics / Rice / Vegetal Biology / Wild rice

2007

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Modern elite rice varieties of the \Green Revolution\ have retained a large introgression from wild rice around the Pi33 rice blast resistance locus

2007

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$Modern elite rice varieties of the \Green Revolution\ have retained a large introgression from wild rice around the Pi33 rice blast resistance locus$

Modern elite rice varieties of the \Green Revolution\ have retained a large introgression from wild rice around the Pi33 rice blast resistance locus

2007

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$Modern elite rice varieties of the \Green Revolution\ have retained a large introgression from wild rice around the Pi33 rice blast resistance locus$

Journal Article

Modern elite rice varieties of the \Green Revolution\ have retained a large introgression from wild rice around the Pi33 rice blast resistance locus

Biologie et Génétique des Interactions Plantes-Agents Pathogènes ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Ecole Nationale Supérieure Agronomique de Montpellier (ENSA M)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro),

Bayer S.A.S. [France] ; Bayer AG [Germany],

Berruyer, Romain,

Morel, Jean-Benoit, J.-B,

Notteghem, Jean-Loup,

Ballini, Elsa,

Tharreau, Didier,

Lebrun, Marc-Henri

2007

Overview

During the breeding process of cultivated crops, resistance genes to pests and diseases are commonly introgressed from wild species. The size of these introgressions is predicted by theoretical models but has rarely been measured in cultivated varieties. By combining resistance tests with isogenic strains, genotyping and sequencing of different rice accessions, it was shown that, in the elite rice variety IR64, the resistance conferring allele of the rice blast resistance gene Pi33 was introgressed from the wild rice Oryza rufipogon (accession IRGC101508). Further characterization of this introgression revealed a large introgression at this locus in IR64 and the related variety IR36. The introgressed fragment represents approximately half of the short arm of rice chromosome 8. This is the first report of a large introgression in a cultivated variety of rice. Such a large introgression is likely to have been maintained during backcrossing only if a selection pressure was exerted on this genomic region. The possible traits that were selected are discussed.

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Publisher

Wiley,CCSD,Oxford, UK : Blackwell Publishing Ltd,Blackwell Science,Blackwell Publishing Ltd

Subject

/ Blasts

/ crops