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24, chemin de Borde Rouge -Auzeville - CS52627 31326 Castanet Tolosan cedex - France

Last update: May 2021

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Ecophysiologie et Génomique Fonctionnelle de la Vigne - Umr 1287 EGVF

UMR 1287 - EGVF

Unité Mixte de Recherche (INRA, ENITAB, Université de Bordeaux)

Ecophysiologie et Génomique Fonctionnelle de la Vigne
I.S.V.V Bordeaux, 210 Chemin de Leysotte

33882 Villenave d’Ornon Cedex, France


Grapevine resilience to heat: linking transcription, redox status and K/acids balance

Financement: ANR

Partenariat: BPMP (I Gaillard/ A de Angeli), BFP (P Pétriacq)

Période: 2021-2025 (42 mois)


Coordination: Fatma OUAKED-LECOURIEUX


Climate records underline that global warming is unprecedented. High temperatures (HT) account for large crop yield losses worldwide. In the context of agriculture of the future, understanding how plants cope with HT while maintaining good crop yield and quality is therefore an important issue.

In the context of viticulture, grapevines thrive under unfavourable conditions but their growth and fruit quality begin to suffer when temperatures exceed 35°C. Thus, the predicted temperature elevation should lead to significant and permanent damages affecting plant growth and, to alteration of berry properties (color, flavor, and aroma components). In this context, it is urgent to anticipate the effects of climate change on vineyards, and particularly the consequences of extreme temperatures. Apart from the viticulture practices, the exploitation of vine genetic diversity to select varieties better adapted to the ongoing climate while maintaining the expected qualitative profiles remains a valid alternative. The present proposal aims to put this lever into action by studying the functioning of the processes affected by HTs in order to identify few molecular actors that can modulate the observed effects. This project is all the more relevant as knowledge regarding grapevine HT signalling is scarce in comparison to other species. PARASOL project therefor proposes the study of grapevine HS response through the characterisation of few HT-induced TFs and their interaction with important physiological parameters driving plant response and fruit quality: Redox status and K/acid balance.