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Grain carbon isotope composition is a marker for allocation and harvest index in wheat

hal.structure.identifierInstitut de Recherche en Horticulture et Semences [IRHS]
dc.contributor.authorDOMERGUE, Jean‐Baptiste
hal.structure.identifierInstitut de Recherche en Horticulture et Semences [IRHS]
dc.contributor.authorABADIE, Cyril
hal.structure.identifierInstitut de Recherche en Horticulture et Semences [IRHS]
dc.contributor.authorLALANDE, Julie
hal.structure.identifierARVALIS - Institut du végétal [Paris]
dc.contributor.authorDESWARTE, Jean‐Charles
hal.structure.identifierNatl Inst Agr Bot, Cambridge, England
dc.contributor.authorOBER, Eric
hal.structure.identifierPhysiopathologie et Thérapeutiques Respiratoires
dc.contributor.authorLAURENT, Valérie
hal.structure.identifierDépartement de Biologie Moléculaire Végétale
dc.contributor.authorZIMMERLI, Céline
hal.structure.identifierUNISIGMA
dc.contributor.authorLEREBOUR, Philippe
hal.structure.identifierSociété Ragt 2N
dc.contributor.authorDUCHALAIS, Laure
hal.structure.identifierRAGT 2n
dc.contributor.authorBÉDARD, Camille
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorDERORY, Jérémy
hal.structure.identifierUnion Française des Semenciers [UFS]
dc.contributor.authorMOITTIE, Thierry
hal.structure.identifierInstitut des Sciences des Plantes de Paris-Saclay [IPS2 (UMR_9213 / UMR_1403)]
dc.contributor.authorLAMOTHE‐SIBOLD, Marlène
hal.structure.identifierARVALIS - Institut du végétal [Paris]
dc.contributor.authorBEAUCHÊNE, Katia
hal.structure.identifierInstitut de Recherche en Horticulture et Semences [IRHS]
hal.structure.identifierIRHS - Équipe SMS (Source and sink Metabolism and Stress responses) [IRHS-SMS]
dc.contributor.authorLIMAMI, Anis
hal.structure.identifierInstitut de Recherche en Horticulture et Semences [IRHS]
hal.structure.identifierIRHS - Équipe SMS (Source and sink Metabolism and Stress responses) [IRHS-SMS]
dc.contributor.authorTCHERKEZ, Guillaume
dc.date.issued2022-05
dc.identifier.issn0140-7791
dc.description.abstractEnThe natural C-13 abundance (delta C-13) in plant leaves has been used for decades with great success in agronomy to monitor water-use efficiency and select modern cultivars adapted to dry conditions. However, in wheat, it is also important to find genotypes with high carbon allocation to spikes and grains, and thus with a high harvest index (HI) and/or low carbon losses via respiration. Finding isotope-based markers of carbon partitioning to grains would be extremely useful since isotope analyses are inexpensive and can be performed routinely at high throughput. Here, we took the advantage of a set of field trials made of more than 600 plots with several wheat cultivars and measured agronomic parameters as well as delta C-13 values in leaves and grains. We find a linear relationship between the apparent isotope discrimination between leaves and grain (denoted as Delta delta(corr)), and the respiration use efficiency-to-HI ratio. It means that overall, efficient carbon allocation to grains is associated with a small isotopic difference between leaves and grains. This effect is explained by postphotosynthetic isotope fractionations, and we show that this can be modelled by equations describing the carbon isotope composition in grains along the wheat growth cycle. Our results show that C-13 natural abundance in grains could be useful to find genotypes with better carbon allocation properties and assist current wheat breeding technologies.
dc.language.isoen
dc.publisherWiley
dc.rights.urihttp://creativecommons.org/licenses/by/
dc.subject.encarbon 13
dc.subject.enpartitioning
dc.subject.enpost-photosynthetic fractionation
dc.subject.enrespiration use efficiency.
dc.title.enGrain carbon isotope composition is a marker for allocation and harvest index in wheat
dc.typeArticle de revue
dc.identifier.doi10.1111/pce.14339
dc.subject.halSciences du Vivant [q-bio]/Biologie cellulaire
bordeaux.journalPlant, Cell and Environment
bordeaux.pagepce.14339
bordeaux.peerReviewedoui
hal.identifierhal-03687116
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03687116v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Plant,%20Cell%20and%20Environment&rft.date=2022-05&rft.spage=pce.14339&rft.epage=pce.14339&rft.eissn=0140-7791&rft.issn=0140-7791&rft.au=DOMERGUE,%20Jean%E2%80%90Baptiste&ABADIE,%20Cyril&LALANDE,%20Julie&DESWARTE,%20Jean%E2%80%90Charles&OBER,%20Eric&rft.genre=article


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