Multi-year linkage and association mapping confirm the high number of genomic regions involved in oilseed rape quantitative resistance to blackleg
| Autor: | Maria J. Manzanares-Dauleux, Sophie Paillard, Cyril Falentin, Vinod Kumar, Berline Fopa-Fomeju, Cécile Baron, Gwenaëlle Deniot, Patrick Vallée, Régine Delourme |
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| Přispěvatelé: | Institut de Génétique, Environnement et Protection des Plantes (IGEPP), AGROCAMPUS OUEST-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Recherche Agronomique (INRA), Institut National de la Recherche Agronomique (INRA)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-AGROCAMPUS OUEST, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Institut National de la Recherche Agronomique (INRA)-Université de Rennes (UR)-AGROCAMPUS OUEST |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
0301 basic medicine résistance aux maladies cartographie de qtl Genetic Linkage Quantitative Trait Loci Blackleg leptosphaeria maculans Biology Quantitative trait locus 01 natural sciences 03 medical and health sciences Ascomycota Leptosphaeria maculans Genetic linkage Genetics [SDV.BV]Life Sciences [q-bio]/Vegetal Biology colza d'hiver Association mapping Gene Genetic Association Studies Disease Resistance Plant Diseases Genetic association 2. Zero hunger Linkage (software) Brassica napus Chromosome Mapping General Medicine biology.organism_classification maladie de la jambe noire resistance to diseases 030104 developmental biology cartographie du génome Agronomy and Crop Science 010606 plant biology & botany Biotechnology |
| Zdroj: | TAG Theoretical and Applied Genetics TAG Theoretical and Applied Genetics, Springer Verlag, 2018, 131 (8), pp.1627-1643. ⟨10.1007/s00122-018-3103-9⟩ TAG Theoretical and Applied Genetics, 2018, 131 (8), pp.1627-1643. ⟨10.1007/s00122-018-3103-9⟩ |
| ISSN: | 0040-5752 1432-2242 |
| DOI: | 10.1007/s00122-018-3103-9⟩ |
| Popis: | A repertoire of the genomic regions involved in quantitative resistance to Leptosphaeria maculans in winter oilseed rape was established from combined linkage-based QTL and genome-wide association (GWA) mapping. Linkage-based mapping of quantitative trait loci (QTL) and genome-wide association studies are complementary approaches for deciphering the genomic architecture of complex agronomical traits. In oilseed rape, quantitative resistance to blackleg disease, caused by L. maculans, is highly polygenic and is greatly influenced by the environment. In this study, we took advantage of multi-year data available on three segregating populations derived from the resistant cv Darmor and multi-year data available on oilseed rape panels to obtain a wide overview of the genomic regions involved in quantitative resistance to this pathogen in oilseed rape. Sixteen QTL regions were common to at least two biparental populations, of which nine were the same as previously detected regions in a multi-parental design derived from different resistant parents. Eight regions were significantly associated with quantitative resistance, of which five on A06, A08, A09, C01 and C04 were located within QTL support intervals. Homoeologous Brassica napus genes were found in eight homoeologous QTL regions, which corresponded to 657 pairs of homoeologous genes. Potential candidate genes underlying this quantitative resistance were identified. Genomic predictions and breeding are also discussed, taking into account the highly polygenic nature of this resistance. |
| Databáze: | OpenAIRE |
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