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Plasticity of wood and leaf traits related to hydraulic efficiency and safety is linked to evaporative demand and not soil moisture in rubber (<i>Hevea brasiliensis</i>)

hal.structure.identifierGeorg-August-University = Georg-August-Universität Göttingen
hal.structure.identifierTechnische Universität Dresden = Dresden University of Technology [TU Dresden]
dc.contributor.authorWAITE, Pierre-André
hal.structure.identifierGeorg-August-University = Georg-August-Universität Göttingen
dc.contributor.authorLEUSCHNER, Christoph
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorDELZON, Sylvain
hal.structure.identifierBogor Agricultural University - IPB (INDONESIA)
dc.contributor.authorTRIADIATI, Triadiati
hal.structure.identifierUniversitas Jambi = University of Jambi [UNJA]
dc.contributor.authorSAAD, Asmadi
hal.structure.identifierTechnische Universität Dresden = Dresden University of Technology [TU Dresden]
dc.contributor.authorSCHULDT, Bernhard
dc.date.accessioned2024-04-11T08:06:31Z
dc.date.available2024-04-11T08:06:31Z
dc.date.issued2023-09-14
dc.identifier.issn0829-318X
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/197483
dc.description.abstractEnThe predicted increase of drought intensity in SouthEast Asia has raised concern about the sustainability of rubber (Hevea brasiliensis Müll. Arg.) cultivation. In order to quantify the degree of phenotypic plasticity in this important tree crop species, we analysed a set of wood and leaf traits related to the hydraulic safety and efficiency in PB260 clones from eight smallholder plantations in Jambi province, Indonesia, representing a gradient in local microclimatic and edaphic conditions. Across plots, branch embolism resistance (P 50) ranged from-2.14 to-2.58 MPa. The P 50 and P 88 values declined, and the hydraulic safety margin increased, with an increase in the mean annual vapour pressure deficit (VPD). Among leaf traits, only the changes in specific leaf area were related to the differences in evaporative demand. These variations of hydraulic trait values were not related to soil moisture levels. We did not find a trade-off between hydraulic safety and efficiency, but vessel density (VD) emerged as a major trait associated with both safety and efficiency. The VD, and not vessel diameter, was closely related to P 50 and P 88 as well as to specific hydraulic conductivity, the lumen-tosapwood area ratio and the vessel grouping index. In conclusion, our results demonstrate some degree of phenotypic plasticity in wood traits related to hydraulic safety in this tropical tree species, but this is only in response to the local changes in evaporative demand and not soil moisture. Given that VPD may increasingly limit plant growth in a warmer world, our results provide evidence of hydraulic trait changes in response to a rising evaporative demand.
dc.language.isoen
dc.publisherOxford University Press (OUP)
dc.rights.urihttp://creativecommons.org/licenses/by/
dc.subject.enembolism resistance
dc.subject.enleaf turgor loss point
dc.subject.enphenotypic plasticity
dc.subject.envapour pressure deficit
dc.subject.envulnerability curve
dc.subject.enwood anatomy
dc.title.enPlasticity of wood and leaf traits related to hydraulic efficiency and safety is linked to evaporative demand and not soil moisture in rubber (<i>Hevea brasiliensis</i>)
dc.typeArticle de revue
dc.identifier.doi10.1093/treephys/tpad113
dc.subject.halSciences de l'environnement
bordeaux.journalTree Physiology
bordeaux.page2131 - 2149
bordeaux.volume43
bordeaux.hal.laboratoriesBioGeCo (Biodiversité Gènes & Communautés) - UMR 1202*
bordeaux.issue12
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-04396904
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-04396904v1
bordeaux.COinSctx_ver=Z39.88-2004&amp;rft_val_fmt=info:ofi/fmt:kev:mtx:journal&amp;rft.jtitle=Tree%20Physiology&amp;rft.date=2023-09-14&amp;rft.volume=43&amp;rft.issue=12&amp;rft.spage=2131%20-%202149&amp;rft.epage=2131%20-%202149&amp;rft.eissn=0829-318X&amp;rft.issn=0829-318X&amp;rft.au=WAITE,%20Pierre-Andr%C3%A9&amp;LEUSCHNER,%20Christoph&amp;DELZON,%20Sylvain&amp;TRIADIATI,%20Triadiati&amp;SAAD,%20Asmadi&amp;rft.genre=article


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