Molecular mechanisms of plant thermal response: from signal transduction and epigenetic regulation to signaling integration - PubMed
4 hours ago
- #heat stress
- #epigenetic regulation
- #plant thermal response
- Global warming intensification elevates heat stress to one of the major threats to crop productivity.
- This review synthesizes recent advances in understanding plant responses to moderate and acute heat stress, focusing on the integration of epigenetic regulation and signaling networks.
- Key transcription factors such as PIF4 (during thermomorphogenesis) and HSFA1s (in heat shock responses) orchestrate plant adaptive growth through crosstalk among light, circadian, and hormone signaling pathways.
- Epigenetic mechanisms, including histone variant H2A.Z dynamics and histone modification reprogramming, function as central regulators of thermal plasticity.
- HSFA2-mediated chromatin remodeling and siRNA-dependent control of transgenerational thermomemory are highlighted as important processes.
- Fundamental questions remain regarding temperature sensing, HSFA1s activation dynamics, and stress signal integration.
- Multi-omics and synthetic biology approaches are proposed as pivotal in deciphering principles of plant thermal resilience to provide a foundation for climate-smart crops.