Seasonal changes in the physiology and metabolism of grapevine perennating buds
Authors: Signorelli, S., Hermawaty, D., Feil, R., Couture, C., Lunn, J. E., Considine, J. E., Considine, M. J.
Date: 2025-06-24 · Version: 1
DOI: 10.1101/2025.06.17.660214 Category: Plant Biology
Model Organism: Vitis vinifera
▶ AI Summary
The study examined seasonal physiological and metabolic changes in Cabernet Sauvignon grapevine buds, identifying three dormancy phases: para‑dormancy with active metabolism and high TCA cycle intermediates, endo‑dormancy with reduced respiration and increased raffinose, and eco‑dormancy with rising respiration, sugar mobilization, and G2 cell‑cycle reactivation. Accumulation of sugar‑phosphates just before bud burst suggests these metabolites promote bud emergence.
bud dormancy Vitis vinifera metabolomics sugar metabolism cell cycle