Developmental, molecular and genetic studies on grapevine response to temperature open breeding strategies for adaptation to warming

Torregrosa, Laurent (Montpellier SupAgro, Montpellier, France) ; Bigard, Antoine (Montpellier SupAgro, Montpellier, France ; INRA, Montpellier, France ; INRA, Gruissan, France) ; Doligez, Agnes (INRA, Montpellier, France) ; Lecourieux, David (Bordeaux University, Villenave d'Ornon, France) ; Rienth, Markus (Montpellier SupAgro, Montpellier, France ; INRA, Montpellier, France ; Fondation Jean Poupelain, Javrezac, France ; School of Viticulture and Enology, HES-SO // University of Applied Sciences Western Switzerland) ; Luchaire, Nathalie (Montpellier SupAgro, Montpellier, France) ; Pieri, Philippe (Bordeaux University, Villenave d'Ornon, France) ; Chatbanyong, Ratthaphon (Montpellier SupAgro, Montpellier, France) ; Shahood, Rezth (Montpellier SupAgro, Montpellier, France) ; Farnos, Marc (INRA, Montpellier, France) ; Roux, Catherine (INRA, Montpellier, France) ; Adiveze, Angélique (INRA, Montpellier, France) ; Pillet, Jérémie (Bordeaux University, Villenave d'Ornon, France) ; Sire, Yannick (INRA, Gruissan, France) ; Zumstein, Emmanuelle (INRA, Gruissan, France) ; Veyret, Mélanie (INRA, Gruissan, France) ; Le Cunff, Loic (UMT Génovigne, Montpellier, France) ; Lecourieux, Fatma (Bordeaux University, Villenave d'Ornon, France) ; Saurin, Nicolas (INRA, Gruissan, France) ; Muller, Bertrand (INRA, Montpellier, France) ; Ojeda, Hernàn (INRA, Gruissan, France) ; Houel, Cléa (Montpellier SupAgro, Montpellier, France ; INRA, Montpellier, France) ; Péros, Jean-Pierre (INRA, Montpellier, France) ; This, Patrice (INRA, Montpellier, France) ; Pellegrino, Anne (Montpellier SupAgro, Montpellier, France) ; Romieu, Charles (INRA, Montpellier, France)

Aim: In the long term, genetic improvement is one of the major strategies to support sustainable wine production in a changing climate. Over the past 5 years, we have developed an interdisciplinary research program that aimed to: i) characterize the impact of temperature increase sensed by the entire plant or individual bunches on the development and functioning of the plant, ii) identify the physiological and molecular mechanisms regulating the response of vegetative and reproductive development to heat stress and iii) develop tools to map quantitative trait loci (QTLs) of plant and berry development in duly controlled, stable, and contrasting environmental conditions. Methods and results: Performing high-throughput genomic analyses combined with the use of innovative experimental designs (fruiting cuttings, microvines, single berry sampling) was critical to decipher the ecophysiological and molecular mechanisms involved in the vine response to high temperature. Conclusion: Warming promotes vegetative growth and hampers plant carbon balance, disturbing flower set and young berry development. High temperatures modify primary and secondary fruit metabolisms, desynchronizing sugar and organic acid metabolisms and delaying sugar and polyphenol accumulation during ripening. The study of day and night transcriptomic and proteomic signatures associated with heat highlighted key players of the response to temperature in the fruit. Significance and impact of the study: Capitalizing on this knowledge, a new program is being proposed for the selection of cultivars limiting the accumulation of sugars in the berry while maintaining other qualitative compounds.

Article Type:
Ingénierie et Architecture
Aucun institut
11 p.
Published in:
Numeration (vol. no.):
2017, vol. 51, no. 2, pp. 155-165
Appears in Collection:

 Record created 2021-03-15, last modified 2021-03-19

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