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Importance of stomatal patchiness in the biological response to water stress

hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
hal.structure.identifierLaboratoire de biogenèse membranaire [LBM]
hal.structure.identifierUniversité de Bordeaux [UB]
hal.structure.identifierInstitut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement [INRAE]
dc.contributor.authorFORGET, Guillaume
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
hal.structure.identifierUniversité de Bordeaux [UB]
hal.structure.identifierInstitut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement [INRAE]
dc.contributor.authorBURLETT, Régis
hal.structure.identifierSchool of Life Sciences, University of Essex, Colchester C04 3SQ, UK
dc.contributor.authorLAWSON, Tracy
hal.structure.identifierUniversité de Bordeaux [UB]
hal.structure.identifierCentre National de la Recherche Scientifique [CNRS]
hal.structure.identifierLaboratoire de biogenèse membranaire [LBM]
dc.contributor.authorJOUBES, Jérôme
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
hal.structure.identifierUniversité de Bordeaux [UB]
hal.structure.identifierInstitut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement [INRAE]
dc.contributor.authorDELZON, Sylvain
dc.date.accessioned2025-09-17T02:02:02Z
dc.date.available2025-09-17T02:02:02Z
dc.date.conference2025-07-08
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/207623
dc.description.abstractEnDroughts are increasing in frequency and intensity across all biomes, affecting plant survival and productivity. During drought, the stomatal response, although effective against water loss, is detrimental to CO2 uptake, highlighting the trade-off between transpiration and assimilation. Stomatal patchiness, defined by a non-uniform distribution of stomatal openings across the leaf surface, represents an emerging collective behaviour that optimises gas exchange in response to environmental stimuli. Advanced imaging techniques, such as thermal and chlorophyll fluorescence imaging, have become essential methods to visualise and quantify this phenomenon. This research investigates dynamics of stomatal patchiness along drought, examining both long-term and short-term stomatal responses using dual imaging. Our results show consistent patterns in thermal and quantum efficiency in relation to stomatal conductance, with both measures showing variability at the onset of stress, indicating some plasticity in the face of changes in water potential optimising gas exchange. Stomatal patchiness emerges as a complex, multiscale phenomenon characterised by the fragmentation of macroscale leaf patches into distinct unit patches. This hierarchical organisation is manifested by intra-patch dynamics as a short-term response to environmental conditions, but decreases in the long term as water stress increases. The relationship between patch-level behaviour and overall leaf physiology highlights the biological significance of this spatial heterogeneity in plant water regulation strategies, leading to a better understanding of the mechanisms underlying drought resistance. Understanding stomatal patchiness and its role in drought response is crucial for developing strategies to enhance plant resilience to water stress in the context of climate change.
dc.language.isoen
dc.title.enImportance of stomatal patchiness in the biological response to water stress
dc.typeAutre communication scientifique (congrès sans actes - poster - séminaire...)
dc.subject.halSciences du Vivant [q-bio]
bordeaux.hal.laboratoriesBioGeCo (Biodiversité Gènes & Communautés) - UMR 1202*
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionINRAE
bordeaux.conference.titleSEB Annual Conference Antwerp 2025
bordeaux.countryBE
bordeaux.conference.cityAnvers
bordeaux.peerReviewedoui
hal.identifierhal-05261991
hal.version1
hal.invitednon
hal.proceedingsnon
hal.conference.end2025-07-11
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-05261991v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.au=FORGET,%20Guillaume&BURLETT,%20R%C3%A9gis&LAWSON,%20Tracy&JOUBES,%20J%C3%A9r%C3%B4me&DELZON,%20Sylvain&rft.genre=conference


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