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Phenotypic and genetic dissection of component traits for early vigour in rice using plant growth modelling, sugar content analyses and association mapping.

hal.structure.identifierInternational Center for Tropical Agriculture [Colombie] [CIAT]
dc.contributor.authorREBOLLEDO, M C
hal.structure.identifierInternational Rice Research Institute [Philippines] [IRRI]
hal.structure.identifierAmélioration génétique et adaptation des plantes méditerranéennes et tropicales [UMR AGAP]
hal.structure.identifierDépartement Systèmes Biologiques [Cirad-BIOS]
dc.contributor.authorDINGKUHN, M
hal.structure.identifierAmélioration génétique et adaptation des plantes méditerranéennes et tropicales [UMR AGAP]
hal.structure.identifierDépartement Systèmes Biologiques [Cirad-BIOS]
dc.contributor.authorCOURTOIS, Brigitte
hal.structure.identifierBiologie du fruit et pathologie [BFP]
dc.contributor.authorGIBON, Yves
hal.structure.identifierAmélioration génétique et adaptation des plantes méditerranéennes et tropicales [UMR AGAP]
hal.structure.identifierDépartement Systèmes Biologiques [Cirad-BIOS]
dc.contributor.authorCLÉMENT-VIDAL, Anne
hal.structure.identifierInternational Center for Tropical Agriculture [Colombie] [CIAT]
dc.contributor.authorCRUZ, D F
hal.structure.identifierInternational Center for Tropical Agriculture [Colombie] [CIAT]
dc.contributor.authorDUITAMA, J
hal.structure.identifierInternational Center for Tropical Agriculture [Colombie] [CIAT]
hal.structure.identifierInstitut de Recherche pour le Développement [IRD]
hal.structure.identifierDiversité, adaptation, développement des plantes [UMR DIADE]
dc.contributor.authorLORIEUX, M
hal.structure.identifierAmélioration génétique et adaptation des plantes méditerranéennes et tropicales [UMR AGAP]
hal.structure.identifierDépartement Systèmes Biologiques [Cirad-BIOS]
dc.contributor.authorLUQUET, Delphine
dc.date.issued2015
dc.identifier.issn0022-0957
dc.description.abstractEnEarly vigour of rice, defined as seedling capacity to accumulate shoot dry weight (SDW) rapidly, is a complex trait. It depends on a genotype propensity to assimilate, store, and/or use non-structural carbohydrates (NSC) for producing large and/or numerous leaves, involving physiological trade-offs in the expression of component traits and, possibly, physiological and genetic linkages. This study explores a plant-model-assisted phenotyping approach to dissect the genetic architecture of rice early vigour, applying the Genome Wide Association Study (GWAS) to morphological and NSC measurements, as well as fitted parameters for the functional-structural plant model, Ecomeristem. Leaf size, number, SDW, and source-leaf NSC concentration were measured on a panel of 123 japonica accessions. The data were used to estimate Ecomeristem genotypic parameters driving organ appearance rate, size, and carbon dynamics. GWAS was performed based on 12 221 single-nucleotide polymorphisms (SNP). Twenty-three associations were detected at P <1×10(-4) and 64 at P <5×10(-4). Associations for NSC and model parameters revealed new regions related to early vigour that had greater significance than morphological traits, providing additional information on the genetic control of early vigour. Plant model parameters were used to characterize physiological and genetic trade-offs among component traits. Twelve associations were related to loci for cloned genes, with nine related to organogenesis, plant height, cell size or cell number. The potential use of these associations as markers for breeding is discussed.
dc.language.isoen
dc.publisherOxford University Press (OUP)
dc.rights.urihttp://creativecommons.org/licenses/by/
dc.subject.enGenome wide association study (GWAS)
dc.subject.enOryza sativa L.
dc.subject.engenotyping by sequencing
dc.subject.enheuristic approach
dc.subject.enmodel-assisted phenotyping
dc.subject.ensugar metabolism.
dc.title.enPhenotypic and genetic dissection of component traits for early vigour in rice using plant growth modelling, sugar content analyses and association mapping.
dc.typeArticle de revue
dc.identifier.doi10.1093/jxb/erv258
dc.subject.halSciences du Vivant [q-bio]/Biologie végétale
bordeaux.journalJournal of Experimental Botany
bordeaux.page5555-66
bordeaux.volume66
bordeaux.issue18
bordeaux.peerReviewedoui
hal.identifierhal-02636970
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02636970v1
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