Integrated analysis of metabolites and enzyme activities reveals the plasticity of central carbon metabolism in grape (<i>Vitis vinifera</i> cv. Cabernet Sauvignon) berries under carbon limitation.

ABSTRACT: High temperatures increase the sugar concentration of grape (Vitis vinifera L.) berries, which can negatively affect the composition and quality of wine, and global climate change is expected to exacerbate this problem. Modifying the source-to-sink ratio of grapevines by selective pruning is a potential strategy to mitigate this. To investigate the effects of low source-to-sink ratio (retaining three leaves per cluster) on carbon metabolism of grape (cv. Cabernet Sauvignon) berries, we conducted an analysis of 42 metabolites and 21 enzyme activities at nine berry developmental stages，as well as transcriptomes from berries grown under two leaves per cluster. The results revealed that the metabolic pathways were coordinately regulated to maintain homeostasis under low source-to-sink r

SUBMITTER: Tong Q 

PROVIDER: S-EPMC11891482 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature