光敏色素介导的光信号通路中令人兴奋的新发现

作     者：蔡兴卜 Enamul Huq Xingbo Cai;Enamul Huq

作者机构：Department of Molecular Biosciences and The Institute for Cellular and Molecular BiologyThe University of Texas at AustinAustin 78712USA 

出 版 物：《Science Bulletin》 (科学通报（英文版）)

年 卷 期：2023年第68卷第11期

页      面：1091-1094,M0003页

核心收录：

学科分类：070207[理学-光学] 07[理学] 0702[理学-物理学] 

基　　金：the National Science Foundation(MCB-2014408)。 

主　　题：光敏色素 absorbing translate 

摘      要：How organisms perceive and respond to their surrounding environment is a fundamental question in biology.This is particularly relevant to plants because of their sessile nature.Light and temperature are two environmental factors that have profound effects on plant growth and development.Plants have evolved intricate regulatory modules to translate these environmental signals into their developmental programs,from germination to flowering[1].Phytochromes(phys)are one such red/far-red light sensory photoreceptors ubiquitously present in organisms ranging from bacteria to plants[2].Phytochromes exist in the red light absorbing(Pr)form in darkness and are converted to a biologically active farred light absorbing(Pfr)form upon exposure to red light.The Pfr form can be converted back to Pr form upon far-red light exposure,thus phytochromes are acting like light switches that can be turned“onand“off.