Dynamic QTLs for sugars and enzyme activities provide an overview of genetic control of sugar metabolism during peach fruit development

Publication Overview
TitleDynamic QTLs for sugars and enzyme activities provide an overview of genetic control of sugar metabolism during peach fruit development
AuthorsDesnoues E, Baldazzi V, Génard M, Mauroux J-B, Lambert P, Confolent C, Quilot-Turion B
TypeJournal Article
Journal NameJournal of Experimental Botany
Volume67
Issue11
Year2016
Page(s)3419–3431
CitationDesnoues E, Baldazzi V, Génard M, Mauroux J-B, Lambert P, Confolent C, Quilot-Turion B. Dynamic QTLs for sugars and enzyme activities provide an overview of genetic control of sugar metabolism during peach fruit development. Journal of Experimental Botany. 2016; 67(11):3419–3431.

Abstract

Knowledge of the genetic control of sugar metabolism is essential to enhance fruit quality and promote fruit consumption. The sugar content and composition of fruits varies with species, cultivar and stage of development, and is controlled by multiple enzymes. A QTL (quantitative trait locus) study was performed on peach fruit [Prunus persica (L.) Batsch], the model species for Prunus. Progeny derived from an interspecific cross between P. persica cultivars and P. davidiana was used. Dynamic QTLs for fresh weight, sugars, acids, and enzyme activities related to sugar metabolism were detected at different stages during fruit development. Changing effects of alleles during fruit growth were observed, including inversions close to maturity. This QTL analysis was supplemented by the identification of genes annotated on the peach genome as enzymes linked to sugar metabolism or sugar transporters. Several cases of co-locations between annotated genes, QTLs for enzyme activities and QTLs controlling metabolite concentrations were observed and discussed. These co-locations raise hypotheses regarding the functional regulation of sugar metabolism and pave the way for further analyses to enable the identification of the underlying genes. In conclusion, we identified the potential impact on fruit breeding of the modification of QTL effect close to maturity.
Projects
This publication contains information about 1 projects:
Project NameDescription
Peach-sugar_and_enzyme_activity-Quilot-Turion-2016
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Pages

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