Characterization of Main Responsive Genes Reveals Their Regulatory Network Attended by Multi-Biological Metabolic Pathways in Paclobutrazol (PAC)-Modulated Grape Seed Development (GSD) at the Stone-Hardening Stage.

ABSTRACT: Paclobutrazol (PAC) is a significant inhibitor of gibberellin biosynthesis that profoundly influences grape seed development (GSD) through the modulation of key molecular pathways. Here, we identified 6659 differentially expressed genes (DEGs) in GSD under PAC treatment, with 3601 up-regulated and 3058 down-regulated. An analysis of hormone-associated DEGs revealed that auxin-related genes (16) were the most up-regulated, followed by genes associated with brassinosteroid and ABA. In contrast, cytokinin- and gibberellin-related genes exhibited a suppressive response. PAC treatment also triggered extensive reprogramming of metabolic pathways, including 44 genes involved in starch and sucrose metabolism (24 up-regulated, 20 down-regulated), 101 cell wall-related genes (53 up-regulated, 48 dow

SUBMITTER: Aziz RB 

PROVIDER: S-EPMC11817196 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature