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Mechanisms of grapevine resilience to a vascular disease: investigating stem radial growth, xylem development, and physiological acclimation

hal.structure.identifierSanté et agroécologie du vignoble [UMR SAVE]
dc.contributor.authorDELL'ACQUA, Ninon
hal.structure.identifierEcophysiologie et Génomique Fonctionnelle de la Vigne [UMR EGFV]
dc.contributor.authorGAMBETTA, Gregory
ORCID: 0000-0002-8838-5050
IDREF: 225449641
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorDELZON, Sylvain
hal.structure.identifierSanté et agroécologie du vignoble [UMR SAVE]
dc.contributor.authorFERRER, Nathalie
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
hal.structure.identifierDepartement des sciences de l’environnement [Trois-Rivieres]
dc.contributor.authorLAMARQUE, Laurent
hal.structure.identifierUnité Expérimentale de Pech-Rouge [PECH ROUGE]
dc.contributor.authorSAURIN, Nicolas
hal.structure.identifierSanté et agroécologie du vignoble [UMR SAVE]
dc.contributor.authorTHEODORE, Pauline
hal.structure.identifierSanté et agroécologie du vignoble [UMR SAVE]
dc.contributor.authorDELMAS, Chloe E. L.
dc.date2024
dc.date.accessioned2024-04-11T08:07:11Z
dc.date.available2024-04-11T08:07:11Z
dc.date.issued2024
dc.identifier.issn0305-7364
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/197499
dc.description.abstractEnBackground and Aims: Plant vascular diseases significantly impact crop yield worldwide. Esca is a grapevine vascular disease found globally in vineyards which causes a loss of hydraulic conductance due to the occlusion of xylem vessels by tyloses. However, the integrated response of plant radial growth and physiology in maintaining xylem integrity in grapevine expressing esca symptoms remains poorly understood. Methods: We investigated the interplay between variation in stem diameter, xylem anatomy, plant physiological response, and hydraulic traits in two widespread esca susceptible cultivars, ‘Sauvignon blanc’ and ‘Cabernet Sauvignon’. We used an original experimental design using naturally infected mature vines which were uprooted and transplanted into pots allowing for their study in a mini-lysimeter greenhouse phenotyping platform. Key Results: Esca significantly altered the timing and sequence of stem growth periods in both cultivars, particularly the shrinkage phase following radial expansion. Symptomatic plants had a significantly higher density of occluded vessels and lower leaf- and whole-plant gas exchange. Esca-symptomatic vines showed compensation mechanisms, producing numerous small functional xylem vessels later in development suggesting a maintenance of stem vascular cambium activity. Stabilization or late recovery of whole plant stomatal conductance coincided with new healthy shoots at the top of the plant after esca symptoms plateaued. Conclusions: Modified cropping practices, like avoiding late season topping, may enhance resilience in esca-symptomatic plants. These results highlight that integrating dendrometers, xylem anatomy, and gas exchange provides insights into vascular pathogenesis and its effects on plant physiology.
dc.language.isoen
dc.publisherOxford University Press (OUP)
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/
dc.subject.enDendrometer
dc.subject.enEsca
dc.subject.enGas exchange
dc.subject.enGrapevine
dc.subject.enPlant hydraulics
dc.subject.enRadial growth
dc.subject.enVascular disease
dc.subject.enXylem anatomy
dc.title.enMechanisms of grapevine resilience to a vascular disease: investigating stem radial growth, xylem development, and physiological acclimation
dc.typeArticle de revue
dc.identifier.doi10.1093/aob/mcad188/7464011
dc.subject.halSciences du Vivant [q-bio]/Biologie végétale/Phytopathologie et phytopharmacie
dc.subject.halSciences du Vivant [q-bio]/Biologie végétale/Amélioration des plantes
dc.subject.halSciences du Vivant [q-bio]/Sciences agricoles/Sciences et techniques de l'agriculture
bordeaux.journalAnnals of Botany
bordeaux.pagemcad188
bordeaux.hal.laboratoriesBioGeCo (Biodiversité Gènes & Communautés) - UMR 1202*
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-04342012
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-04342012v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Annals%20of%20Botany&rft.date=2024&rft.spage=mcad188&rft.epage=mcad188&rft.eissn=0305-7364&rft.issn=0305-7364&rft.au=DELL'ACQUA,%20Ninon&GAMBETTA,%20Gregory&DELZON,%20Sylvain&FERRER,%20Nathalie&LAMARQUE,%20Laurent&rft.genre=article


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