Ambient temperature has profound impacts on almost every aspect of plant growth and development, including seed germination, stem and petiole elongation, leaf movement, stomata development, flowering, and pathogen defense. Although the signal transduction pathways underlying plant responses to extreme cold and heat temperatures have been well studied, our understanding, at the molecular level, of how plants adjust phenotypic plasticity in response to nonstressful ambient temperature is still rudimentary. This review summarizes studies related to PHYTOCHROME-INTERACTING FACTOR 4 (PIF4), the cardinal regulator of thermoresponsive growth in the model dicotyledonous plant Arabidopsis thaliana, emphasizing recent progress in the light-quality- and photoperiod-dependent regulation of PIF4-mediated thermomorphogenesis.

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调节 PIF4 介导的热敏生长

环境温度对植物生长和发育的几乎所有方面都有深远的影响，包括种子发芽、茎和叶柄伸长、叶片运动、气孔发育、开花和病原体防御。尽管植物对极端寒冷和炎热温度反应的信号转导途径已经得到了很好的研究，但我们在分子水平上对植物如何响应无压力环境温度来调整表型可塑性的理解仍处于初级阶段。本综述总结了与光敏色素相互作用因子 4 (PIF4) 相关的研究，PIF4 是模型双子叶植物拟南芥热响应性生长的主要调节因子，强调了 PIF4 介导的热形态发生的光质量和光周期依赖性调节的最新进展。