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Contrasting stem water uptake and storage dynamics of water-saver and water-spender species during drought and recovery

hal.structure.identifierAgrotecnio-Center
dc.contributor.authorMARTÍN‐GÓMEZ, Paula
hal.structure.identifierUniversidad de Guadalajara
dc.contributor.authorRODRÍGUEZ-ROBLES, Ulises
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorOGÉE, Jérôme
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorWINGATE, Lisa
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.authorPEGUERO-PINA, José
hal.structure.identifierCentro de Investigación y Tecnología Agroalimentaria de Aragón [CITA]
dc.contributor.authorDOS SANTOS SILVA, José Victor
hal.structure.identifierCentro de Investigación y Tecnología Agroalimentaria de Aragón [CITA]
dc.contributor.authorGIL-PELEGRÍN, Eustaquio
hal.structure.identifierUniversitat de Lleida
dc.contributor.authorPEMÁN, Jesús
hal.structure.identifierCentro de Investigación y Tecnología Agroalimentaria de Aragón [CITA]
dc.contributor.authorFERRIO, Juan Pedro
dc.date.accessioned2024-04-08T11:43:21Z
dc.date.available2024-04-08T11:43:21Z
dc.date.issued2023-03-17
dc.identifier.issn0829-318X
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/195102
dc.description.abstractEnDrought is projected to occur more frequently and intensely in the coming decades, and the extent to which it will affect forest functioning will depend on species-specific responses to water stress. Aiming to understand the hydraulic traits and water dynamics behind water-saver and water-spender strategies in response to drought and recovery, we conducted a pot experiment with two species with contrasting physiological strategies, Scots pine (Pinus sylvestris L.) and Portuguese oak (Quercus faginea L.). We applied two cycles of soil drying and recovery and irrigated with isotopically different water to track fast changes in soil and stem water pools, while continuously measuring physiological status and xylem water content from twigs. Our results provide evidence for a tight link between the leaf-level response and the water uptake and storage patterns in the stem. The water-saver strategy of pines prevented stem dehydration by rapidly closing stomata which limited their water uptake during the early stages of drought and recovery. Conversely, oaks showed a less conservative strategy, maintaining transpiration and physiological activity under dry soil conditions, and consequently becoming more dehydrated at the stem level. We interpreted this dehydration as the release of water from elastic storage tissues as no major loss of hydraulic conductance occurred for this species. After soil rewetting, pines recovered pre-drought leaf water potential rapidly, but it took longer to replace the water from conductive tissues (slower labeling speed). In contrast, water-spender oaks were able to quickly replace xylem water during recovery (fast labeling speed), but it took longer to refill stem storage tissues, and hence to recover pre-drought leaf water potential. These different patterns in sap flow rates, speed and duration of the labeling reflected a combination of water-use and storage traits, linked to the leaf-level strategies in response to drought and recovery.
dc.description.sponsorshipInitiative d'excellence de l'Université de Bordeaux - ANR-10-IDEX-0003
dc.language.isoen
dc.publisherOxford University Press (OUP)
dc.subject.endelta H-2
dc.subject.endelta O-18
dc.subject.enlabeling
dc.subject.enoak
dc.subject.enpine
dc.subject.entranspiration
dc.subject.enwater relations
dc.subject.enwater stable isotopes
dc.subject.enwater storage
dc.subject.enwater uptake
dc.title.enContrasting stem water uptake and storage dynamics of water-saver and water-spender species during drought and recovery
dc.typeArticle de revue
dc.identifier.doi10.1093/treephys/tpad032
dc.subject.halSciences de l'environnement
bordeaux.journalTree Physiology
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-04160237
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-04160237v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Tree%20Physiology&rft.date=2023-03-17&rft.eissn=0829-318X&rft.issn=0829-318X&rft.au=MART%C3%8DN%E2%80%90G%C3%93MEZ,%20Paula&RODR%C3%8DGUEZ-ROBLES,%20Ulises&OG%C3%89E,%20J%C3%A9r%C3%B4me&WINGATE,%20Lisa&SANCHO-KNAPIK,%20Domingo&rft.genre=article


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