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The reduced canopy area in esca-symptomatic grapevine plants leads to lower canopy transpiration and mitigates water stress

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
hal.structure.identifierUniversity of California [Davis] [UC Davis]
dc.contributor.authorBARTLETT, Megan
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorBURLETT, Régis
hal.structure.identifierLaboratoire de Glycobiologie et Matrice Extracellulaire Végétale [Glyco-MEV]
dc.contributor.authorCHAMBARD, Marie
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.identifierSanté et agroécologie du vignoble [UMR SAVE]
dc.contributor.authorPINOL DAUBISSE, Mathéo
hal.structure.identifierUniversity of California [Davis] [UC Davis]
dc.contributor.authorSINCLAIR, Gabriela
hal.structure.identifierSanté et agroécologie du vignoble [UMR SAVE]
hal.structure.identifierInstitut des Sciences de la Vigne et du Vin [Villenave d'Ornon] [ISVV]
dc.contributor.authorDELMAS, Chloé
dc.date.accessioned2025-09-19T02:02:02Z
dc.date.available2025-09-19T02:02:02Z
dc.date.issued2025-09-01
dc.identifier.issn0032-0889
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/207646
dc.description.abstractEnIn perennial plants, abiotic and biotic stresses may occur in combination and/or in sequence over many years, making understanding and predicting the combined effects of drought and pathogens on plant health and productivity a considerable challenge. In this study, we investigated the susceptibility of esca-symptomatic grapevines (Vitis vinifera L.) to drought. Esca is a grapevine vascular disease leading to decreased vineyard longevity worldwide. Using transplanted, naturally infected 20-yr-old “Sauvignon blanc” vines with known esca histories, we subjected esca-symptomatic and asymptomatic control vines to different drought periods. Whole-plant and leaf physiology, radial growth, anatomical traits, and long-term recovery were compared among treatments. Esca leaf symptoms were associated with stem xylem vessel occlusion, leaf drop, and decreased symptomatic leaf gas exchange, resulting in reduced canopy area and thus, lower whole canopy transpiration. When esca-symptomatic plants were subjected to drought, declines in water potential, CO2 assimilation and stomatal conductance measured on green leaves, as well as canopy maximum transpiration, were delayed. Water stress did not cause a significant increase in stem xylem occlusion. The esca-symptomatic stems showed greater radial stem diameter recovery that coincided with faster regrowth of healthy new shoots at the top of the plant associated with a recovery of whole plant gas exchange. Esca mitigates the effects of drought through reduced canopy area, confirming an antagonistic interaction between these stresses. These results demonstrate the importance of combining abiotic and biotic stresses and understanding their interactions when studying dieback in the climate change context.
dc.language.isoen
dc.publisherOxford University Press ; American Society of Plant Biologists
dc.subjectEsca De La Vigne
dc.subjectVitis vinifera L..
dc.subjectStress biotique
dc.subjectStress abiotique
dc.title.enThe reduced canopy area in esca-symptomatic grapevine plants leads to lower canopy transpiration and mitigates water stress
dc.typeArticle de revue
dc.identifier.doi10.1093/plphys/kiaf361
dc.subject.halSciences de l'environnement
bordeaux.journalPlant Physiology
bordeaux.volume199
bordeaux.hal.laboratoriesBioGeCo (Biodiversité Gènes & Communautés) - UMR 1202*
bordeaux.issue1
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-05267294
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-05267294v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Plant%20Physiology&rft.date=2025-09-01&rft.volume=199&rft.issue=1&rft.eissn=0032-0889&rft.issn=0032-0889&rft.au=DELL%E2%80%99ACQUA,%20Ninon&GAMBETTA,%20Gregory&BARTLETT,%20Megan&BURLETT,%20R%C3%A9gis&CHAMBARD,%20Marie&rft.genre=article


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