Publications

AtbZIP63 integrates abscisic acid (ABA) and glucose signals in Arabidopsis. Its expression is transiently repressed by low glucose independently of HXK1 and ABA, while high glucose repression requires ABA. Combined ABA and glucose enhance repression of AtbZIP63 and its homologue AtbZIP3, indicating a role in coordinating metabolic and stress signals.

This study shows that circadian rhythms in Arabidopsis are entrained by sugar signals through the bZIP63 transcription factor. bZIP63 interacts with SnRK1 signaling and regulates PRR7 to adjust the circadian oscillator in response to carbon availability, providing a molecular link between energy status and clock function.

The work reveals that bZIP63 coordinates sugar signaling with circadian regulation of starch metabolism, influencing growth. Loss of bZIP63 function impairs starch mobilization and biomass accumulation, while altered expression modulates carbon use efficiency, linking metabolism and clock regulation in plant development.

This review highlights how post-translational modifications (PTMs) regulate carbon metabolism in plants. PTMs alter protein activity, stability, localization, and interactions, thereby influencing metabolic pathways and cellular energy balance. The article discusses phosphorylation, acetylation, ubiquitination, and SUMOylation as critical modulators of plant carbon use efficiency.

This article demonstrates that SUMOylation of the rice DELLA protein SLR1 modulates transcriptional programs to enhance tolerance to salt stress. By disrupting specific protein interactions and regulating GA-related gene expression, SUMOylated SLR1 contributes to improved yield stability under salinity conditions.