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The genetics of water-use efficiency and its relation to growth in maritime pine

hal.structure.identifierEcophysiologie et Génomique Fonctionnelle de la Vigne [UMR EGFV]
dc.contributor.authorMARGUERIT-JACOB, Elisa
ORCID: 0000-0002-5016-990X
IDREF: 127516697
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorBOUFFIER, Laurent
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorCHANCEREL, Emilie
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorCOSTA, Paolo
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorLAGANE, Frederic
hal.structure.identifierEcologie et Ecophysiologie Forestières [devient SILVA en 2018] [EEF]
dc.contributor.authorGUEHL, Jean-Marc
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorPLOMION, Christophe
hal.structure.identifierEcologie et Ecophysiologie Forestières [devient SILVA en 2018] [EEF]
dc.contributor.authorBRENDEL, Oliver
dc.date.issued2014
dc.identifier.issn0022-0957
dc.description.abstractEnTo meet the increasing demand of wood biomass worldwide in the context of climate change, developing improved forest tree varieties for high productivity in water-limited conditions is becoming a major issue. This involves breeding for genotypes combining high growth and moderate water loss and thus high water-use efficiency (WUE). The present work provides original data about the genetics of intrinsic WUE (the ratio between net CO2 assimilation rate and stomatal conductance, also estimated by carbon isotope composition of plant material; delta C-13) and its relation to growth in Pinus pinaster Ait. First, heritability for delta C-13 was estimated (0.29) using a 15-year-old progeny trial (Landes provenance), with no significant differences among three sites contrasting in water availability. High intersite correlations (0.63-0.91) and significant but low genotype-environment interactions were detected. Secondly, the genetic architectures of delta C-13 and growth were studied in a three-generation inbred pedigree, introducing the genetic background of a more-drought-adapted parent (Corsican provenance), at ages of 2 years (greenhouse) and 9 years (plantation). One of the quantitative trait loci (QTLs) identified in the field experiment, explaining 67% of the phenotypic variance, was also found among the QTLs detected in the greenhouse experiment, where it colocalized with QTLs for intrinsic WUE and stomatal conductance. This work was able to show that higher WUE was not genetically linked to less growth, allowing thus genetic improvement of water use. As far as is known, the heritability and QTL effects estimated here are based on the highest number of genotypes measured to date.
dc.language.isoen
dc.publisherOxford University Press (OUP)
dc.subject.enBreeding
dc.subject.encarbon isotope composition
dc.subject.engenotypexenvironment interaction
dc.subject.engenetic variability
dc.subject.engrowth
dc.subject.enheritability
dc.subject.enmaritime pine
dc.subject.enQTL
dc.subject.enwater-use efficiency
dc.title.enThe genetics of water-use efficiency and its relation to growth in maritime pine
dc.typeArticle de revue
dc.identifier.doi10.1093/jxb/eru226
dc.subject.halSciences du Vivant [q-bio]
bordeaux.journalJournal of Experimental Botany
bordeaux.page4757 - 4768
bordeaux.volume65
bordeaux.issue17
bordeaux.peerReviewedoui
hal.identifierhal-01556003
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01556003v1
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