Afficher la notice abrégée

Growth and physiological responses of isohydric and anisohydric poplars to drought

hal.structure.identifierInstitute of Plant Sciences and Genetics in Agriculture
dc.contributor.authorATTIA, Ziv
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorDOMEC, Jean-Christophe
hal.structure.identifierNicholas School of the Environment and Earth Sciences
hal.structure.identifierSwedish University of Agricultural Sciences = Sveriges lantbruksuniversitet [SLU]
dc.contributor.authorOREN, Ram
hal.structure.identifierNicholas School of the Environment and Earth Sciences
hal.structure.identifierDepartment of Biology
dc.contributor.authorWAY, Danielle A.
hal.structure.identifierInstitute of Plant Sciences and Genetics in Agriculture
dc.contributor.authorMOSHELION, Menachem
dc.date.accessioned2024-04-08T12:02:50Z
dc.date.available2024-04-08T12:02:50Z
dc.date.issued2015
dc.identifier.issn0022-0957
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/196229
dc.description.abstractEnUnderstanding how different plants prioritize carbon gain and drought vulnerability under a variable water supply is important for predicting which trees will maximize woody biomass production under different environmental conditions. Here, Populus balsamifera (BS, isohydric genotype), P. simonii (SI, previously uncharacterized stomatal behaviour), and their cross, P. balsamifera x simonii (BSxSI, anisohydric genotype) were studied to assess the physiological basis for biomass accumulation and water-use efficiency across a range of water availabilities. Under ample water, whole plant stomatal conductance (gs), transpiration (E), and growth rates were higher in anisohydric genotypes (SI and BSxSI) than in isohydric poplars (BS). Under drought, all genotypes regulated the leaf to stem water potential gradient via changes in gs, synchronizing leaf hydraulic conductance (Kleaf) and E: isohydric plants reduced Kleaf, gs, and E, whereas anisohydric genotypes maintained high Kleaf and E, which reduced both leaf and stem water potentials. Nevertheless, SI poplars reduced their plant hydraulic conductance (Kplant) during water stress and, unlike, BSxSI plants, recovered rapidly from drought. Low gs of the isohydric BS under drought reduced CO2 assimilation rates and biomass potential under moderate water stress. While anisohydric genotypes had the fastest growth under ample water and higher photosynthetic rates under increasing water stress, isohydric poplars had higher water-use efficiency. Overall, the results indicate three strategies for how closely related biomass species deal with water stress: survival-isohydric (BS), sensitive-anisohydric (BSxSI), and resilience-anisohydric (SI). Implications for woody biomass growth, water-use efficiency, and survival under variable environmental conditions are discussed.
dc.language.isoen
dc.publisherOxford University Press (OUP)
dc.subjecthydraulic conductance
dc.subjecttranspiration
dc.subject.enbioenergy
dc.subject.enbiomass
dc.subject.encarbon
dc.subject.enstomata
dc.title.enGrowth and physiological responses of isohydric and anisohydric poplars to drought
dc.typeArticle de revue
dc.identifier.doi10.1093/jxb/erv195
dc.subject.halSciences du Vivant [q-bio]
dc.subject.halSciences de l'environnement
bordeaux.journalJournal of Experimental Botany
bordeaux.page4373-4381
bordeaux.volume66
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.issue14
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-02633625
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02633625v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20Experimental%20Botany&rft.date=2015&rft.volume=66&rft.issue=14&rft.spage=4373-4381&rft.epage=4373-4381&rft.eissn=0022-0957&rft.issn=0022-0957&rft.au=ATTIA,%20Ziv&DOMEC,%20Jean-Christophe&OREN,%20Ram&WAY,%20Danielle%20A.&MOSHELION,%20Menachem&rft.genre=article


Fichier(s) constituant ce document

FichiersTailleFormatVue

Il n'y a pas de fichiers associés à ce document.

Ce document figure dans la(les) collection(s) suivante(s)

Afficher la notice abrégée