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Esca grapevine disease involves leaf hydraulic failure and represents a unique premature senescence process

dc.rights.licenseopenen_US
hal.structure.identifierSanté et agroécologie du vignoble [UMR SAVE]
dc.contributor.authorBORTOLAMI, Giovanni
hal.structure.identifierSanté et agroécologie du vignoble [UMR SAVE]
dc.contributor.authorFERRER, Nathalie
dc.contributor.authorBAUMGARTNER, Kendra
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorDELZON, Sylvain
dc.contributor.authorGRAMAJE, David
dc.contributor.authorLAMARQUE, Laurent
dc.contributor.authorROMANAZZI, Gianfranco
hal.structure.identifierEcophysiologie et Génomique Fonctionnelle de la Vigne [UMR EGFV]
dc.contributor.authorGAMBETTA, Gregory
ORCID: 0000-0002-8838-5050
IDREF: 225449641
hal.structure.identifierSanté et agroécologie du vignoble [UMR SAVE]
dc.contributor.authorDELMAS, Chloé
dc.date.accessioned2024-01-24T09:00:42Z
dc.date.available2024-01-24T09:00:42Z
dc.date.issued2023-03
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/187459
dc.description.abstractEnXylem anatomy may change in response to environmental or biotic stresses. Vascular occlusion, an anatomical modification of mature xylem, contributes to plant resistance and susceptibility to different stresses. In woody organs, xylem occlusions have been examined as part of the senescence process, but their presence and function in leaves remain obscure. In grapevine, many stresses are associated with premature leaf senescence inducing discolorations and scorched tissue in leaves. However, we still do not know whether the leaf senescence process follows the same sequence of physiological events and whether leaf xylem anatomy is affected in similar ways. In this study, we quantified vascular occlusions in midribs from leaves with symptoms of the grapevine disease esca, magnesium deficiency and autumn senescence. We found higher amounts of vascular occlusions in leaves with esca symptoms (in 27% of xylem vessels on average), whereas the leaves with other symptoms (as well as the asymptomatic controls) had far fewer occlusions (in 3% of vessels). Therefore, we assessed the relationship between xylem occlusions and esca leaf symptoms in four different countries (California in the USA, France, Italy and Spain) and eight different cultivars. We monitored the plants over the course of the growing season, confirming that vascular occlusions do not evolve with symptom age. Finally, we investigated the hydraulic integrity of leaf xylem vessels by optical visualization of embolism propagation during dehydration. We found that the occlusions lead to hydraulic dysfunction mainly in the peripheral veins compared with the midribs in esca symptomatic leaves. These results open new perspectives on the role of vascular occlusions during the leaf senescence process, highlighting the uniqueness of esca leaf symptoms and its consequence on leaf physiology.
dc.language.isoENen_US
dc.subject.enHydraulic Failure
dc.subject.enMagnesium Deficiency
dc.subject.enSenescence
dc.subject.enTyloses
dc.subject.enVascular Disease
dc.subject.enVitis Vinifera L.
dc.title.enEsca grapevine disease involves leaf hydraulic failure and represents a unique premature senescence process
dc.typeArticle de revueen_US
dc.identifier.doi10.1093/treephys/tpac133en_US
dc.subject.halSciences du Vivant [q-bio]/Biologie végétaleen_US
bordeaux.journalTree Physiologyen_US
bordeaux.page441-451en_US
bordeaux.volume43en_US
bordeaux.hal.laboratoriesEcophysiologie et Génomique Fonctionnelle de la Vigne (EGFV) - UMR 1287en_US
bordeaux.issue3en_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.institutionBordeaux Sciences Agroen_US
bordeaux.institutionINRAEen_US
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
hal.popularnonen_US
hal.audienceInternationaleen_US
hal.exportfalse
dc.rights.ccPas de Licence CCen_US
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Tree%20Physiology&rft.date=2023-03&rft.volume=43&rft.issue=3&rft.spage=441-451&rft.epage=441-451&rft.au=BORTOLAMI,%20Giovanni&FERRER,%20Nathalie&BAUMGARTNER,%20Kendra&DELZON,%20Sylvain&GRAMAJE,%20David&rft.genre=article


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