Agritrop
Accueil

QTLs and candidate genes for wood properties in maritime pine (Pinus pinaster Ait.)

Pot David, Rodrigues José Carlos, Rozenberg Philippe, Chantre Guillaume, Tibbits Josquin, Cahalan Christine, Pichavant Frédérique, Plomion Christophe. 2006. QTLs and candidate genes for wood properties in maritime pine (Pinus pinaster Ait.). Tree Genetics and Genomes, 2 (1) : 10-24.

Article de revue ; Article de revue à facteur d'impact
[img] Version publiée - Anglais
Accès réservé aux personnels Cirad
Utilisation soumise à autorisation de l'auteur ou du Cirad.
document_539574.pdf

Télécharger (324kB)

Résumé : A three-generation outbred pedigree of 186 individuals was used to identify the genomic regions in-volved in the variability of chemical and physical wood properties of Pinus pinaster. A total of 54 quantitative trait loci (QTLs) was detected, with an average of 2.4 QTLs per trait. Clusters of wood properties QTLs were found at several points in the genome, suggesting the existence of pleiotropic effects of a limited number of genes. The co-localizations observed in this study are in accordance with the genetic correlations previously reported in the literature. In addition, in an attempt to identify the genes under-lying the QTLs, nine wood quality candidate genes involved in cell wall structure were localized on the genetic map. Only one of them, Korrigan, a gene encoding for a [bêta] 1-4 endo-glucanase known in Arabidopis thaliana to be involved in polysaccharide biosynthesis, co-localized with a wood quality QTL cluster involved in hemicellulose content and fibre characteristics. This finding is in accordance with results previously reported for this gene regarding its expression variability (transcriptome and proteome levels) and patterns of molecular evolution. The pertinence of this result will be tested in more rigorous designs in order to identify early selection predictors for wood quality.

Mots-clés Agrovoc : Pinus pinaster, propriété du bois, qualité technologique, locus des caractères quantitatifs, identification, localisation de gène

Mots-clés complémentaires : QTL

Classification Agris : F30 - Génétique et amélioration des plantes

Champ stratégique Cirad : Axe 1 (2005-2013) - Intensification écologique

Auteurs et affiliations

  • Pot David, CIRAD-AMIS-UMR PIA (FRA) ORCID: 0000-0001-6144-8448
  • Rodrigues José Carlos, Instituto Investigaçao Cientifica Tropical (PRT)
  • Rozenberg Philippe, INRA (FRA)
  • Chantre Guillaume, AFOCEL (FRA)
  • Tibbits Josquin, University of Melbourne (AUS)
  • Cahalan Christine, University of Wales (GBR)
  • Pichavant Frédérique, Université de Bordeaux (FRA)
  • Plomion Christophe, INRA (FRA)

Autres liens de la publication

Source : Cirad - Agritrop (https://agritrop.cirad.fr/539574/)

Voir la notice (accès réservé à Agritrop) Voir la notice (accès réservé à Agritrop)

[ Page générée et mise en cache le 2024-01-28 ]