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Vapor pressure deficit constrains transpiration and photosynthesis in holm oak: A comparison of three methods during summer drought.

hal.structure.identifierCentro de Investigación y Tecnología Agroalimentaria de Aragón [CITA]
dc.contributor.authorSANCHO-KNAPIK, Domingo
hal.structure.identifierCentro de Investigación y Tecnología Agroalimentaria de Aragón [CITA]
dc.contributor.authorMENDOZA-HERRER, Óscar
hal.structure.identifierCentro de Investigación y Tecnología Agroalimentaria de Aragón [CITA]
dc.contributor.authorALONSO-FORN, David
hal.structure.identifierUniversity of Zaragoza - Universidad de Zaragoza [Zaragoza]
dc.contributor.authorSAZ, Miguel Ángel
hal.structure.identifierCentro de Investigación y Tecnología Agroalimentaria de Aragón [CITA]
dc.contributor.authorMARTÍN-SÁNCHEZ, Rubén
hal.structure.identifierCentro de Investigación y Tecnología Agroalimentaria de Aragón [CITA]
dc.contributor.authorDOS SANTOS SILVA, José Víctor
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorOGÉE, Jérôme
hal.structure.identifierUniversidad de Zaragossa
hal.structure.identifierCentro de Investigación y Tecnología Agroalimentaria de Aragón [CITA]
dc.contributor.authorPEGUERO-PINA, José Javier
hal.structure.identifierCentro de Investigación y Tecnología Agroalimentaria de Aragón [CITA]
dc.contributor.authorGIL-PELEGRÍN, Eustaquio
hal.structure.identifierUniversitat de Lleida
hal.structure.identifierCentro de Investigación y Tecnología Agroalimentaria de Aragón [CITA]
dc.contributor.authorFERRIO, Juan Pedro
dc.date.accessioned2024-04-08T11:44:19Z
dc.date.available2024-04-08T11:44:19Z
dc.date.issued2022-12
dc.identifier.issn0168-1923
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/195147
dc.description.abstractEnHigh rates of vapor pressure deficit (VPD) can severely decrease plant productivity by reducing stomatal conductance, which might be exacerbated during Mediterranean summers due to soil water deficit. In this study, we monitored the response of holm oak, the archetype of Mediterranean trees, to changes in VPD during a summer drought period to evaluate the effects and consequences on gas exchange of the two water stresses (atmospheric and soil). Measurements were performed on trees growing in an experimental plantation over two summers with moderate drought stress by using three different methods: at the leaf level with an infrared gas analyzer, using a whole-plant chamber for short-term monitoring at the tree level, and measuring the canopy temperature for long-term monitoring. The three methods provided negative relationships between leaf conductance and VPD but with discrepancies probably associated with the measurement scale. Overall, the results showed that atmospheric and soil water stress had an additive effect. Under well-watered conditions, an increase in VPD was partially compensated by a reduction in stomatal conductance, resulting in a slight increase in the transpiration rates. With soil water deficit, the response to VPD resulted in a further decrease in stomatal conductance, reducing transpiration as a water saving strategy. The decrease in conductance in response to VPD was transitory, recovering to initial values as soon as the VPD decreased, both under well-watered and drought conditions. Due to this high sensitivity to atmospheric drought, the maximum carbon gain rates of holm oak were restricted to a short environmental window, which might modulate its physiological performance and natural distribution.
dc.language.isoen
dc.publisherElsevier Masson
dc.subject.enAtmospheric drought
dc.subject.enConductance
dc.subject.enInfrared thermometry
dc.subject.enPhotosynthesis
dc.subject.ensoil water deficit
dc.subject.enWhole-plant chamber
dc.title.enVapor pressure deficit constrains transpiration and photosynthesis in holm oak: A comparison of three methods during summer drought.
dc.typeArticle de revue
dc.identifier.doi10.1016/j.agrformet.2022.109218
dc.subject.halSciences de l'environnement
bordeaux.journalAgricultural and Forest Meteorology
bordeaux.page109218
bordeaux.volume327
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-04071866
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-04071866v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Agricultural%20and%20Forest%20Meteorology&rft.date=2022-12&rft.volume=327&rft.spage=109218&rft.epage=109218&rft.eissn=0168-1923&rft.issn=0168-1923&rft.au=SANCHO-KNAPIK,%20Domingo&MENDOZA-HERRER,%20%C3%93scar&ALONSO-FORN,%20David&SAZ,%20Miguel%20%C3%81ngel&MART%C3%8DN-S%C3%81NCHEZ,%20Rub%C3%A9n&rft.genre=article


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