Wei Hua, Wang Xiling, Xu Hang, Wang Lei
Key Laboratory of Plant Molecular Physiology, CAS Center for Excellence in Molecular Plant Sciences, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093 China.
University of Chinese Academy of Sciences, Beijing, 100049 China.
aBIOTECH. 2020 May 11;1(4):219-232. doi: 10.1007/s42994-020-00019-w. eCollection 2020 Oct.
Flowering time is of great significance for crop reproduction, yield, and regional adaptability, which is intricately regulated by various environmental cues and endogenous signals. Genetic approaches in have revealed the elaborate underlying mechanisms of sensing the dynamic change of photoperiod via a coincidence between light signaling and circadian clock, the cellular time keeping system, to precisely control photoperiodic flowering time, and many other signaling pathways including internal hormones and external temperature cues. Extensive studies in rice (), one of the short-day plants (SDP), have uncovered the multiple major genetic components in regulating heading date, and revealed the underlying mechanisms for regulating heading date. Here we summarize the current progresses on the molecular basis for rice heading date control, especially focusing on the integration mechanism between photoperiod and circadian clock, and epigenetic regulation and heading procedures in response to abiotic stresses.
开花时间对作物繁殖、产量及区域适应性具有重要意义，它受到各种环境信号和内源信号的复杂调控。遗传学研究揭示了通过光信号与生物钟（细胞计时系统）之间的巧合来感知光周期动态变化，从而精确控制光周期开花时间的精细潜在机制，以及包括内源激素和外部温度信号在内的许多其他信号通路。在短日植物之一的水稻中进行的大量研究，已经发现了调控抽穗期的多个主要遗传成分，并揭示了调控抽穗期的潜在机制。在此，我们总结了水稻抽穗期控制分子基础的当前进展，尤其关注光周期与生物钟之间的整合机制，以及响应非生物胁迫的表观遗传调控和抽穗过程。
