Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
Mol Plant. 2015 Apr;8(4):540-51. doi: 10.1016/j.molp.2014.11.021. Epub 2014 Dec 24.
Phytochromes are red and far-red light photoreceptors that play fundamental roles in controlling many aspects of plant growth and development in response to light. The past two decades have witnessed the mechanistic elucidation of the action mode of phytochromes, including their regulation by external and endogenous factors and how they exert their function as transcriptional regulators. More importantly, recent advances have substantially deepened our understanding on the integration of the phytochrome-mediated signal into other cellular and developmental processes, such as elongation of hypocotyls, shoot branching, circadian clock, and flowering time, which often involves complex intercellular and interorgan signaling. Based on these advances, this review illustrates a blueprint of our current understanding of phytochrome signaling and its crosstalk with other signaling pathways, and also points out still open questions that need to be addressed in the future.
光敏色素是红光和远红光光受体，在植物生长和发育过程中对光的响应中发挥着重要作用。在过去的二十年中，人们已经阐明了光敏色素的作用模式的机制，包括它们如何被外部和内源性因素调节以及如何作为转录调节剂发挥作用。更重要的是，最近的进展大大加深了我们对光敏色素介导的信号与其他细胞和发育过程（如下胚轴伸长、分枝、生物钟和开花时间）整合的理解，这通常涉及复杂的细胞间和器官间信号传递。基于这些进展，本文综述了我们目前对光敏色素信号及其与其他信号通路相互作用的理解，并指出了未来仍需要解决的问题。
