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Over-accumulation of abscisic acid in transgenic tomato plants increases the risk of hydraulic failure

hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
hal.structure.identifierEcophysiologie et Génomique Fonctionnelle de la Vigne [UMR EGFV]
dc.contributor.authorLAMARQUE, Laurent J.
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorDELZON, Sylvain
hal.structure.identifierDepartment of Biochemistry and Molecular Biology
dc.contributor.authorTOUPS, Haley
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorGRAVEL, Anne-Isabelle
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorCORSO, Déborah
hal.structure.identifierLaboratoire de Physique et Physiologie Intégratives de l’Arbre en environnement Fluctuant [PIAF]
dc.contributor.authorBADEL, Eric
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorBURLETT, Régis
hal.structure.identifierLaboratoire de Physique et Physiologie Intégratives de l’Arbre en environnement Fluctuant [PIAF]
dc.contributor.authorCHARRIER, Guillaume
hal.structure.identifierLaboratoire de Physique et Physiologie Intégratives de l’Arbre en environnement Fluctuant [PIAF]
dc.contributor.authorCOCHARD, Hervé
hal.structure.identifierInstitute of Systematic Botany and Ecology
dc.contributor.authorJANSEN, Steven
hal.structure.identifierSynchrotron SOLEIL [SSOLEIL]
dc.contributor.authorDESAILLY-VALENTIN, Marion
hal.structure.identifierLaboratoire de Physique et Physiologie Intégratives de l’Arbre en environnement Fluctuant [PIAF]
dc.contributor.authorTORRES RUIZ, Jose Manuel
hal.structure.identifierEcophysiologie et Génomique Fonctionnelle de la Vigne [UMR EGFV]
dc.contributor.authorPOUZOULET, Jérôme
hal.structure.identifierDepartment of Biochemistry and Molecular Biology
dc.contributor.authorCRAMER, Grant R.
hal.structure.identifierCranfield University
dc.contributor.authorTHOMPSON, Andrew J.
hal.structure.identifierEcophysiologie et Génomique Fonctionnelle de la Vigne [UMR EGFV]
dc.contributor.authorGAMBETTA, Gregory
dc.date.issued2020-03
dc.identifier.issn0140-7791
dc.description.abstractEnClimate change threatens food security, and plant science researchers have investigated methods of sustaining crop yield under drought. One approach has been to overproduce abscisic acid (ABA) to enhance water use efficiency. However, the concomitant effects of ABA overproduction on plant vascular system functioning are critical as it influences vulnerability to xylem hydraulic failure. We investigated these effects by comparing physiological and hydraulic responses to water deficit between a tomato (Solanum lycopersicum) wild type control (WT) and a transgenic line overproducing ABA (sp12). Under well-watered conditions, the sp12 line displayed similar growth rate and greater water use efficiency by operating at lower maximum stomatal conductance. X-ray microtomography revealed that sp12 was significantly more vulnerable to xylem embolism, resulting in a reduced hydraulic safety margin. We also observed a significant ontogenic effect on vulnerability to xylem embolism for both WT and sp12. This study demonstrates that the greater water use efficiency in the tomato ABA overproducing line is associated with higher vulnerability of the vascular system to embolism and a higher risk of hydraulic failure. Integrating hydraulic traits into breeding programmes represents a critical step for effectively managing a crop's ability to maintain hydraulic conductivity and productivity under water deficit.
dc.description.sponsorshipPlateforme d'Innovation " Forêt-Bois-Fibre-Biomasse du Futur "
dc.description.sponsorshipCOntinental To coastal Ecosystems: evolution, adaptability and governance - ANR-10-LABX-0045
dc.language.isoen
dc.publisherWiley
dc.subject.encrop
dc.subject.endrought
dc.subject.entransgenic line
dc.subject.enwater deficit
dc.subject.enxylem embolism
dc.title.enOver-accumulation of abscisic acid in transgenic tomato plants increases the risk of hydraulic failure
dc.typeArticle de revue
dc.identifier.doi10.1111/pce.13703
dc.subject.halSciences du Vivant [q-bio]
dc.subject.halSciences du Vivant [q-bio]/Biologie végétale
bordeaux.journalPlant, Cell and Environment
bordeaux.page548-562
bordeaux.volume43
bordeaux.issue3
bordeaux.peerReviewedoui
hal.identifierhal-02620981
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02620981v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Plant,%20Cell%20and%20Environment&rft.date=2020-03&rft.volume=43&rft.issue=3&rft.spage=548-562&rft.epage=548-562&rft.eissn=0140-7791&rft.issn=0140-7791&rft.au=LAMARQUE,%20Laurent%20J.&DELZON,%20Sylvain&TOUPS,%20Haley&GRAVEL,%20Anne-Isabelle&CORSO,%20D%C3%A9borah&rft.genre=article


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