植物昼夜节律研究进展

Research Progress on Circadian Rhythms in Plants

摘要: 生物钟是植物适应外界环境的一种内在分子机制。通过生物钟核心元件基因组成的转录-翻译反馈调节环路，植物能够对环境中的信号如温度和光照进行整合，对光周期开花、激素信号传导、生长、代谢以及生物和非生物胁迫的响应等多种生理过程进行协调。此外，通过驯化过程使得植物能够达到与外界环境最佳的匹配和同步化；植物生物钟和光合作用代谢产物之间的调控关系，预示着生物节律理论在农业生产上的潜在优势。

Abstract: Biological clock is the innate rhythmic molecular mechanism in plants by which respond to complex environmental change. Via the transcriptional and translational feedback among the core components of clock, plants can integrate the environmental cues such as light and temperature to coordinate and involve the photoperiodic flowering, hormone signaling, growth, metabolism, and biotic/abiotic stress. Clock entrainment allows plants to achieve the best synchronization to the outside changing environment; and furthermore, the modulatory relationship between plant biological clock and photosynthesis metabolites indicates the potential advantage of biological rhythm theory in agricultural applications.