Développement de baies entières de Pinot Noir sur différents Climats de Bourgogne sous le prisme de leur métabolisme.

A significant discovery in viticulture reveals that millésime (year-to-year variations) has a dominant impact on the development and composition of Pinot Noir grapes, particularly influencing tartrate concentration by over 2.5 times more in 2022 compared to 2023 due to pre-season drought stress. This study, conducted across five Burgundy vineyards during two consecutive years with above-average temperatures, identified that parcel-specific factors and rootstocks play crucial roles in sugar accumulation and grape development stages, respectively. The research also highlighted a higher accumulation of acids and anthocyanins in 2022, while 2023 showed increased monomeric catechins. Transcriptomic data supported these findings, suggesting a strong developmental sequence that explains most variability. Predictive modeling indicated that drought stress enhances terroir expression, while non-stress conditions lead to more predictable grape development. This study underscores the complex interplay between environmental factors and grape metabolism, offering insights for sustainable viticulture in UNESCO-listed regions.

Laporte, A. Développement de baies entières de Pinot Noir sur différents Climats de Bourgogne sous le prisme de leur métabolisme. https://doi.org/10.70675/44af0a60z5a11z4415z824bz710f1c43de57