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Interclonal variation, coordination, and trade-offs between hydraulic conductance and gas exchange in Pinus radiata : consequences on plant growth and wood density

hal.structure.identifierInstituto Canario de Investigaciones Agrarias [ICIA]
dc.contributor.authorRODRÍGUEZ-GAMIR, Juan
hal.structure.identifierScion [New Zealand]
dc.contributor.authorXUE, Jianming
hal.structure.identifierScion [New Zealand]
dc.contributor.authorMEASON, Dean
hal.structure.identifierUniversity of Waikato [Hamilton]
dc.contributor.authorCLEARWATER, Michael
hal.structure.identifierScion [New Zealand]
dc.contributor.authorCLINTON, Peter
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorDOMEC, Jean-Christophe
dc.date.accessioned2024-04-08T11:50:44Z
dc.date.available2024-04-08T11:50:44Z
dc.date.issued2021-03-29
dc.identifier.issn0022-0957
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/195400
dc.description.abstractEnAbstract Stem growth reflects genetic and phenotypic differences within a tree species. The plant hydraulic system regulates the carbon economy, and therefore variations in growth and wood density. A whole-organism perspective, by partitioning the hydraulic system, is crucial for understanding the physical and physiological processes that coordinately mediate plant growth. The aim of this study was to determine whether the relationships and trade-offs between (i) hydraulic traits and their relative contribution to the whole-plant hydraulic system, (ii) plant water transport, (iii) CO2 assimilation, (iv) plant growth, and (v) wood density are revealed at the interclonal level within a variable population of 10 Pinus radiata (D. Don) clones for these characters. We demonstrated a strong coordination between several plant organs regarding their hydraulic efficiency. Hydraulic efficiency, gas exchange, and plant growth were intimately linked. Small reductions in stem wood density were related to a large increase in sapwood hydraulic efficiency, and thus to plant growth. However, stem growth rate was negatively related to wood density. We discuss insights explaining the relationships and trade-offs of the plant traits examined in this study. These insights provide a better understanding of the existing coordination, likely to be dependent on genetics, between the biophysical structure of wood, plant growth, hydraulic partitioning, and physiological plant functions in P. radiata.
dc.language.isoen
dc.publisherOxford University Press (OUP)
dc.subject.enCarbon allocation
dc.subject.enhydraulic architecture
dc.subject.enhydraulic partitioning
dc.subject.enphotosynthesis
dc.subject.enPinus radiata
dc.subject.enplant growth
dc.subject.enwood density
dc.title.enInterclonal variation, coordination, and trade-offs between hydraulic conductance and gas exchange in Pinus radiata : consequences on plant growth and wood density
dc.typeArticle de revue
dc.identifier.doi10.1093/jxb/eraa587
dc.subject.halSciences de l'environnement
bordeaux.journalJournal of Experimental Botany
bordeaux.page2419-2433
bordeaux.volume72
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.issue7
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-03307814
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03307814v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20Experimental%20Botany&rft.date=2021-03-29&rft.volume=72&rft.issue=7&rft.spage=2419-2433&rft.epage=2419-2433&rft.eissn=0022-0957&rft.issn=0022-0957&rft.au=RODR%C3%8DGUEZ-GAMIR,%20Juan&XUE,%20Jianming&MEASON,%20Dean&CLEARWATER,%20Michael&CLINTON,%20Peter&rft.genre=article


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