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dc.rights.licenseopenen_US
dc.contributor.authorMACHADO FILHO, J. A.
dc.contributor.authorRODRIGUES, W. P.
dc.contributor.authorBARONI, D. F.
dc.contributor.authorPIREDA, S.
dc.contributor.authorCAMPBELL, G.
dc.contributor.authorDE SOUZA, G. A. R.
dc.contributor.authorVERDIN FILHO, A. C.
dc.contributor.authorARANTES, S. D.
dc.contributor.authorDE OLIVEIRA ARANTES, L.
dc.contributor.authorDA CUNHA, M.
hal.structure.identifierEcophysiologie et Génomique Fonctionnelle de la Vigne [UMR EGFV]
dc.contributor.authorGAMBETTA, Gregory
dc.contributor.authorRAKOCEVIC, M.
dc.contributor.authorRAMALHO, J. C.
dc.contributor.authorCAMPOSTRINI, E.
dc.date.accessioned2021-11-22T09:44:50Z
dc.date.available2021-11-22T09:44:50Z
dc.date.issued2021
dc.identifier.issn0176-1617en_US
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/123894
dc.description.abstractEnKnowing the key hydraulic traits of different genotypes at early seedling stages can potentially provide crucial information and save time for breeding programs. In the current study we investigated: (1) how root, stem and whole plant conductivities are linked to xylem traits, and (2) how the integrated hydraulic system impacts leaf water potential, gas exchange, chlorophyll a fluorescence and the growth of three coffee cultivars (clones of Coffea canephora Pierre ex Froehner cv. Conilon) with known differences in drought tolerance. The Conilon clones CL 14, CL 5 V and CL 109A, classi?ed as tolerant, moderately tolerant, and sensitive to drought respectively, were grown under non-limiting soil-water supply but high atmospheric demand (i.e., high VPDair). CL 14 and CL 5 V displayed higher root and stem hydraulic conductance and conductivity, and higher whole plant conductivity than CL 109A, and these differences were associated with higher root growth traits. In addition, CL 109A exhibited a non-significant trend towards wider vessels. Collectively, these responses likely contributed to reduce leaf water potential in CL 109A, and in turn, reduced leaf gas exchange, especially during elevated VPDair. Even when grown under well-watered conditions, the elevated VPDair observed during this study resulted in key differences in the hydraulic traits between the cultivars corresponding to differences in plant water status, gas exchange, and photochemical activity. Together these results suggest that coffee hydraulic traits, even when grown under non-water stress conditions, can be considered in breeding programs targeting more productive and efficient genotypes under drought and high atmospheric demand.
dc.language.isoENen_US
dc.subject.enFluorescence
dc.subject.enDevelopment and aging
dc.subject.enGrowth
dc.subject.enPlant leaf
dc.subject.enPlant Leaves
dc.subject.enBiomechanical Phenomena
dc.subject.enBiomechanics
dc.subject.enChlorophyll A
dc.subject.enCoffea
dc.subject.enDroughts
dc.subject.enFluorescence
dc.subject.enPhysiology
dc.subject.enPlant Roots
dc.subject.enPlant Stems
dc.subject.enWater
dc.title.enLinking root and stem hydraulic traits to leaf physiological parameters in Coffea canephora clones with contrasting drought tolerance
dc.typeArticle de revueen_US
dc.identifier.doi10.1016/j.jplph.2020.153355en_US
dc.subject.halSciences du Vivant [q-bio]/Biologie végétaleen_US
bordeaux.journalJournal of Plant Physiologyen_US
bordeaux.page258-259en_US
bordeaux.hal.laboratoriesEcophysiologie et Génomique Fonctionnelle de la Vigne (EGFV) - UMR 1287en_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.institutionBordeaux Sciences Agroen_US
bordeaux.institutionINRAEen_US
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
hal.exportfalse
dc.rights.ccPas de Licence CCen_US
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