Genetics of pea resistance to Aphanomyces euteiches in the genomics Era

Autor: Nayel-Pilet, Marie-Laure, Desgroux, Aurore, Lavaud, Clément, Lesne, Angélique, Boutet, Gilles, Aubert, Gregoire, McGee, Rébecca, Coyne, Clarice J., Bourion, Virginie, Burstin, Judith, Baranger, Alain
Přispěvatelé: Institut de Génétique, Environnement et Protection des Plantes (IGEPP), Institut National de la Recherche Agronomique (INRA)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-AGROCAMPUS OUEST, Agroécologie [Dijon], Institut National de la Recherche Agronomique (INRA)-Université de Bourgogne (UB)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Université Bourgogne Franche-Comté [COMUE] (UBFC), Grain Legume Genetics Physiology Research, USDA-ARS : Agricultural Research Service, Plant Germplasm Introduction and Testing Research, 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 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 Bourgogne (UB)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement, Legume Society., Institut de Génétique, Environnement et Protection des Plantes ( IGEPP ), 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 de la Recherche Agronomique ( INRA ) -Université de Bourgogne ( UB ) -AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Université Bourgogne Franche-Comté ( UBFC ), USDA-ARS, Institut National de la Recherche Agronomique (INRA)-Université de Rennes (UR)-AGROCAMPUS OUEST
Jazyk: angličtina
Rok vydání: 2016
Předmět:
Zdroj: 2. International Legume Society Conference-Legumes for a Sustainable World
2. International Legume Society Conference-Legumes for a Sustainable World, Oct 2016, Lisbone, Portugal. 358 p
2. International Legume Society Conference-Legumes for a Sustainable World, Legume Society., Oct 2016, Lisbone, Portugal. 358 p
2. International Legume Society Conference-Legumes for a Sustainable World, Oct 2016, Lisbone, Portugal. 358 p., 2016
2016; 2. International Legume Society Conference-Legumes for a Sustainable World, Lisbone, PRT, 2016-10-11-2016-10-14
Popis: BAP GEAPSI BAP GEAPSIBAPGEAPSI; Common root rot, caused by the oomycete Aphanomyces euteiches, is a major soil borne disease of pea in many countries. The large pea genomic and plant resources recently developed have deepened the knowledge of genetics of partial resistance to A. euteiches. A dedicated panel of Aphanomyces genetic resources genotyped with a 13K-SNP array (Tayeh et al, 2015) was used in a genome-wide association study (GWAS) of partial resistance. Results identified a total of 52 small sized LD-based confidence intervals associated with the resistance, including 14 consistent QTL regions at which marker haplotypes were defined from the panel (Desgroux et al, 2016). This study validated six of the seven main resistance QTL previously identified, for which Near- Isogenic-Lines (NILs) were created by back-cross assisted selection (Lavaud et al, 2015). The fingerprint of the NILs using the 13K-SNP array showed that QTL introgressions could cover several smaller GWAS intervals, suggesting the presence of several linked genes or a single imprecisely located locus underlying a QTL. The genomic location of the major QTL Ae-Ps7.6, which effect was confirmed on slowing down symptom appearance and root colonization by the pathogen (Lavaud et al, 2016), was refined by GWAS and fine mapping. The unprecedented genomic resources recently developed in pea provide new markers closely-linked to Aphanomyces resistance loci, for accelerating progress in breeding future pea resistant varieties.
Databáze: OpenAIRE
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