Abstract
Grafting is a technique for cultivating commercial fruit species that guarantees genetic characteristics using selected clones. However, candidate genes involved in the re-establishment of grafted woody plants remain poorly understood. In this way, our manuscript aimed to present current knowledge on UDP-glucose pyrophosphorylase (UGP) gene expression and its enzymatic activity (UGPase) by incorporating Brazilian wild to elucidate the role of “players” in re-establishing post-grafting in woody species. Considerable benefits were observed in grafted plants, explained by the correlation between gene expression, such as that of UGP, and UGPase biosynthesis and enzymatic activity. This enzyme is directly responsible for cell wall formation, which explains faster tissue formation in some grafting combinations than others. Besides, UGP promotes the re-establishment of the vascular connection in plant grafting, thus regulating short- and long-term grafting compatibility in woody plants. These crucial experiments are also highly relevant to many nurseries. In this study, we report that the Annona genus is a valuable plant model for studying plant grafting in wood species.
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