Mostrar el registro sencillo del ítem

Drought response strategies and hydraulic traits contribute to mechanistic understanding of plant dry-down to hydraulic failure

hal.structure.identifierHawkesbury Institute for the Environment
dc.contributor.authorBLACKMAN, Chris J.
hal.structure.identifierHawkesbury Institute for the Environment
dc.contributor.authorCREEK, Danielle
hal.structure.identifierHawkesbury Institute for the Environment
dc.contributor.authorMAIER, Chelsea
hal.structure.identifierHawkesbury Institute for the Environment
hal.structure.identifierUniversity of North Florida [Jacksonville] [UNF]
dc.contributor.authorASPINWALL, Michael J.
hal.structure.identifierHawkesbury Institute for the Environment
hal.structure.identifierForest and Natural Resources Management
dc.contributor.authorDRAKE, John E.
hal.structure.identifierHawkesbury Institute for the Environment
hal.structure.identifierWestern Sydney University
dc.contributor.authorPFAUTSCH, Sebastian
hal.structure.identifierLand and Water
dc.contributor.authorO’GRADY, Anthony
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorDELZON, Sylvain
hal.structure.identifierHawkesbury Institute for the Environment
dc.contributor.authorMEDLYN, Belinda E.
hal.structure.identifierHawkesbury Institute for the Environment
dc.contributor.authorTISSUE, David T.
hal.structure.identifierHawkesbury Institute for the Environment
dc.contributor.authorCHOAT, Brendan
dc.date.accessioned2022-10-12T13:12:34Z
dc.date.available2022-10-12T13:12:34Z
dc.date.issued2019
dc.identifier.issn0829-318X
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/157807
dc.description.abstractEnDrought-induced tree mortality alters forest structure and function, yet our ability to predict when and how different species die during drought remains limited. Here, we explore how stomatal control and drought tolerance traits influence the duration of drought stress leading to critical levels of hydraulic failure. We examined the growth and physiological responses of four woody plant species (three angiosperms and one conifer) representing a range of water-use and drought tolerance traits over the course of two controlled drought–recovery cycles followed by an extended dry-down. At the end of the final dry-down phase, we measured changes in biomass ratios and leaf carbohydrates. During the first and second drought phases, plants of all species closed their stomata in response to decreasing water potential, but only the conifer species avoided water potentials associated with xylem embolism as a result of early stomatal closure relative to thresholds of hydraulic dysfunction. The time it took plants to reach critical levels of water stress during the final dry-down was similar among the angiosperms (ranging from 39 to 57 days to stemP88) and longer in the conifer (156 days to stemP50). Plant dry-down time was influenced by a number of factors including species stomatal-hydraulic safety margin (gsP90 – stemP50), as well as leaf succulence and minimum stomatal conductance. Leaf carbohydrate reserves (starch) were not depleted at the end of the final dry-down in any species, irrespective of the duration of drought. These findings highlight the need to consider multiple structural and functional traits when predicting the timing of hydraulic failure in plants.
dc.language.isoen
dc.publisherOxford University Press (OUP)
dc.subjecthydraulics
dc.subjectNSCs
dc.subjectpinus
dc.subjectrainfall exclusion
dc.subject.endrought
dc.subject.eneucalyptus
dc.subject.enmortality
dc.subject.enrainout shelter
dc.subject.enrecovery
dc.title.enDrought response strategies and hydraulic traits contribute to mechanistic understanding of plant dry-down to hydraulic failure
dc.typeArticle de revue
dc.identifier.doi10.1093/treephys/tpz016
dc.subject.halSciences du Vivant [q-bio]
bordeaux.journalTree Physiology
bordeaux.page910-924
bordeaux.volume39
bordeaux.hal.laboratoriesBioGeCo (Biodiversité Gènes & Communautés) - UMR 1202*
bordeaux.issue6
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-02625598
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02625598v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Tree%20Physiology&rft.date=2019&rft.volume=39&rft.issue=6&rft.spage=910-924&rft.epage=910-924&rft.eissn=0829-318X&rft.issn=0829-318X&rft.au=BLACKMAN,%20Chris%20J.&CREEK,%20Danielle&MAIER,%20Chelsea&ASPINWALL,%20Michael%20J.&DRAKE,%20John%20E.&rft.genre=article


Archivos en el ítem

ArchivosTamañoFormatoVer

No hay archivos asociados a este ítem.

Este ítem aparece en la(s) siguiente(s) colección(ones)

Mostrar el registro sencillo del ítem