光敏色素介导的光信号通路中令人兴奋的新发现  

Exciting new discoveries in phytochrome-mediated light signaling pathways

作　　者：蔡兴卜 Enamul Huq Xingbo Cai;Enamul Huq(Department of Molecular Biosciences and The Institute for Cellular and Molecular Biology,The University of Texas at Austin,Austin 78712,USA)

机构地区：[1]Department of Molecular Biosciences and The Institute for Cellular and Molecular Biology,The University of Texas at Austin,Austin 78712,USA

出　　处：《Science Bulletin》2023年第11期1091-1094,M0003,共5页科学通报（英文版）

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

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“on”and“off”.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“on”and“off”.

关 键 词：光敏色素 absorbing TRANSLATE 

分 类 号：O439[机械工程—光学工程]