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

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dc.bibliographicCitation.endpage1306es_ES
dc.bibliographicCitation.issue8es_ES
dc.bibliographicCitation.stpage1290es_ES
dc.bibliographicCitation.titleTree Physiologyen
dc.bibliographicCitation.volume43es_ES
dc.contributor.authorMartín Gómez, Paulaes_ES
dc.contributor.authorRodríguez Robles, Uliseses_ES
dc.contributor.authorOgée, Jérômees_ES
dc.contributor.authorWingate, Lisaes_ES
dc.contributor.authorSancho Knapik, Domingoes_ES
dc.contributor.authorPeguero Pina, José Javieres_ES
dc.contributor.authorDos Santos Silva, José Víctores_ES
dc.contributor.authorGil Pelegrín, Eustaquioes_ES
dc.contributor.authorFerrio Díaz, Juan Pedroes_ES
dc.coverage.spatialSAFMAes_ES
dc.date.accessioned2023-10-19T11:50:53Z
dc.date.available2023-10-19T11:50:53Z
dc.date.issued2023es_ES
dc.date.updated2023-03-30T08:29:46Z
dc.description.abstractDrought 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) and portuguese oak (Quercus faginea). 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 that 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 labelling speed). In contrast, water-spender oaks were able to quickly replace xylem water during recovery (fast labelling 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 labelling, reflected a combination of water use and storage traits, linked to the leaf-level strategies in response to drought and recovery.en
dc.description.otherwater stable isotopesen
dc.description.otherδ 18O, δ 2Hen
dc.description.otherpineen
dc.description.otherwater uptakeen
dc.description.otheroaken
dc.description.otherwater storageen
dc.description.othertranspirationen
dc.description.otherwater relationsen
dc.description.otherlabellingen
dc.description.statusPublishedes_ES
dc.identifier.citationMartin-Gomez, Paula; Rodriguez-Robles, Ulises; Ogee, Jerome; Wingate, Lisa; Sancho-Knapik, Domingo; Peguero, J.J. ; Ferrio, P. Contrasting stem water uptake and storage dynamics of water-saver and water-spender species during drought and recovery. Tree Physiology, Volume 43, Issue 8, August 2023, Pages 1290–1306
dc.identifier.issn0829318X
dc.identifier.urihttp://hdl.handle.net/10532/6646
dc.language.isoenes_ES
dc.relation.doihttps://doi.org/10.1093/treephys/tpad032es_ES
dc.relation.urihttps://doi.org/10.1093/treephys/tpad032es_ES
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 Españaes
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/es
dc.subject.agrovocRoblees
dc.subject.agrovocAbsorción de aguaes
dc.subject.agrovocAlmacenamiento de aguaes
dc.subject.agrovocTranspiraciónes
dc.subject.agrovocCambio climáticoes
dc.subject.agrovocQuercus fagineaes
dc.subject.agrovocEstrés hídricoes
dc.titleContrasting stem water uptake and storage dynamics of water-saver and water-spender species during drought and recoveryen
dc.typeJournal Contribution*
dc.type.refereedRefereedes_ES
dc.type.specifiedArticlees_ES

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