Antagonistic regulation of PIF4 and HY5 activity by BBX28 regulates thermomorphogenesis.
BBX28 modulates the antagonistic activity of PIF4 and HY5, promoting thermomorphogenesis by regulating growth-related gene expression under high temperatures.
- Why it matters: Understanding how plants adapt their growth to temperature changes is crucial for improving climate resilience, yet the molecular mechanisms controlling this process remain unclear.
- What they did: The study analyzed the role of BBX28 in thermomorphogenesis through genetic and molecular approaches, revealing its interaction with PIF4 and HY5 and its influence on gene regulation at elevated temperatures.
- The result: BBX28 enhances PIF4 activity and inhibits HY5 binding, enabling adaptive growth responses, which could be leveraged to develop plants better suited for changing climates.