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Genome-Wide Association Study Reveals Candidate Genes Involved in Fruit Trait Variation in Persian Walnut (Juglans regia L.)

hal.structure.identifierBiologie du fruit et pathologie [BFP]
dc.contributor.authorBERNARD, Anthony
hal.structure.identifierBiologie du fruit et pathologie [BFP]
dc.contributor.authorCRABIER, Julie
hal.structure.identifierBiologie du fruit et pathologie [BFP]
dc.contributor.authorDONKPEGAN, Armel
hal.structure.identifierUniversity of California [Davis] [UC Davis]
dc.contributor.authorMARRANO, Annarita
hal.structure.identifierCtifl - Centre de Lanxade [Ctifl - Centre de Lanxade ]
dc.contributor.authorLHEUREUX, Fabrice
hal.structure.identifierBiologie du fruit et pathologie [BFP]
dc.contributor.authorDIRLEWANGER, Elisabeth
dc.date.issued2021
dc.identifier.issn1664-462X
dc.description.abstractEnElucidating the genetic determinants of fruit quality traits in walnut is essential to breed new cultivars meeting the producers and consumers’ needs. We conducted a genome-wide association study (GWAS) using multi-locus models in a panel of 170 accessions of Juglans regia from the INRAE walnut germplasm collection, previously genotyped using the AxiomTM J. regia 700K SNP array. We phenotyped the panel for 25 fruit traits related to morphometrics, shape, volume, weight, ease of cracking, and nutritional composition. We found more than 60 marker-trait associations (MTAs), including a highly significant SNP associated with nut face diameter, nut volume and kernel volume on chromosome 14, and 5 additional associations were detected for walnut weight. We proposed several candidate genes involved in nut characteristics, such as a gene coding for a beta-galactosidase linked to several size-related traits and known to be involved in fruit development in other species. We also confirmed associations on chromosomes 5 and 11 with nut suture strength, recently reported by the University of California, Davis. Our results enhance knowledge of the genetic control of important agronomic traits related to fruit quality in walnut, and pave the way for the development of molecular markers for future assisted selection.
dc.language.isoen
dc.publisherFrontiers
dc.rights.urihttp://creativecommons.org/licenses/by/
dc.subjectarbre fruitier
dc.subjectFruit à coque
dc.subject.entexture analyzer
dc.subject.engas chromatography
dc.subject.enHPLC
dc.subject.enX-ray CT
dc.subject.enfruit traits
dc.subject.enGWAS
dc.subject.enJuglans regia L.
dc.subject.enwalnut
dc.title.enGenome-Wide Association Study Reveals Candidate Genes Involved in Fruit Trait Variation in Persian Walnut (Juglans regia L.)
dc.typeArticle de revue
dc.identifier.doi10.3389/fpls.2020.607213
dc.subject.halSciences du Vivant [q-bio]
dc.subject.halSciences du Vivant [q-bio]/Biologie végétale
dc.subject.halSciences du Vivant [q-bio]/Biologie végétale/Amélioration des plantes
bordeaux.journalFrontiers in Plant Science
bordeaux.page607213
bordeaux.volume11
bordeaux.peerReviewedoui
hal.identifierhal-03107348
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03107348v1
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