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Last update: May 2021

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UMR 1332 Biologie du Fruit et Pathologie

Friday, April 8, 2022 - Thesis defense - Guillaume DECROS

Guillaume Decros
"Role of ascorbate redox signalling in the performance of tomato fruit"
Guillaume DECROS

Team Metabolism (META)

Friday, April 8, 2022 - 1.30 p.m. - Amphitheater Colette & Josy Bové - Campus INRAE Villenave d'Ornon

Abstract :

Ascorbate is a major antioxidant participating to the control of redox balance during fruit development. Reactive oxygen species (ROS) production and redox signals arising from are crucial to harmonious metabolism and participate in adaptive signalling pathways throughout development and in response to the environment. However, knowledge on redox biology in fruit is sparsely documented, although principles originating from leaves tissues are valuable while waiting for comprehensive studies that provide more extensive knowledge on fruits.
My PhD project aims to provide the first quantitative description of core redox metabolism in a developmental context. The data sets obtained are finally used to develop a kinetic-based model of the ascorbate-glutathione cycle, allowing the investigation of redox fluxes and their regulation during tomato fruit development. This project provides the first comprehensive description of central redox metabolism and ASC-GSH cycle fluxes and their regulation during tomato fruit development. These complementary tool and data allowed a deeper understanding of the intricate metabolic reprogramming occurring during fruit development.

Jury :

  • M. Pierre PETRIACQ
    Maître de conférences Université de Bordeaux - UMR BFP INRAE Bordeaux - Directeur de thèse
  • M. Eric GOMES
    Professeur Université de Bordeaux - UMR EGFV INRAE Bordeaux - Examinateur
  • Mrs Christine FOYER
    Professeur University of Birmingham - Rapporteur
    Chargée de Recherche Institute of Plant Sciences Paris-Saclay - Rapporteur
  • M. Christophe SALON
    Directeur de recherche  UMR Agroecologie - INRAE DIJON - Examinateur
  • Mrs Rebecca STEVENS
    Researcher - INRAE Avignon - Guest