Unraveling the complexity of high-temperature tolerance by characterizing key players of heat stress response in grapevine
Grapevine (Vitis spp.) is greatly influenced by climatic conditions and its economic value is therefore directly linked to environmental factors. Among these factors, temperature plays a critical role in vine phenology and fruit composition. In such conditions, elucidating the mechanisms employed by the vine to cope with heat waves becomes urgent. For the past few years, our research team has been producing molecular and metabolic data to highlight the molecular players involved in the response of the vine and the fruit to high temperatures . Some of these temperature-sensitive genes are currently undergoing characterization using transgenesis approaches coupled or not with genome editing, taking advantage of the Microvine genotype . The expected results will allow us to enhance our understanding of the molecular mechanisms underlying grapevine’s response to heat stress and to identify biomarkers associated with temperature resilience. Furthermore, in the long term, these findings may facilitate the development of grapevine cultivars that are better adapted to the future climate.
Acknowledgements: This project and C.P. PhD thesis are supported by the French National Research Agency (ANR) (PARASOL Project, ANR-20-CE21-0003).
1- Lecourieux, F et al. (2017). Dissecting the Biochemical and Transcriptomic Effects of a Locally Applied Heat Treatment on Developing Cabernet Sauvignon Grape Berries. Frontiers in Plant Science, 8. https://doi.org/10.3389/fpls.2017.00053
2- Torregrosa, L et al. (2019). The microvine, a model for studies in grapevine physiology and genetics. OENO One, 53(3). https://doi.org/10.20870/oeno-one.2019.53.3.2409
Issue: ICGWS 2023
1UMR 1287 Ecophysiologie et Génomique Fonctionnelle de la Vigne, ISVV Bordeaux-Aquitaine, 210 Chemin de Leysotte, 33140 Villenave-d’Ornon, France