Molecular Genetics Research Laboratory, The University of Tokyo, Hongo, 113, Tokyo, Japan.
J Plant Res. 1997 Mar;110(1):123-30. doi: 10.1007/BF02506851.
Phytochromes are chromoproteins which mediate several light responses in plants. Phytochrome proteins are encoded by a gene family which is currently being characterized in several plant species. Analysis of type-specific mutants of two well-characterized members of the family, PhyA and PhyB, indicates that these proteins have distinct functions. Much remains to be learned about the mechanisms by which the phytochromes carry out their distinct and diverse functions. It is hoped that information concerning the localization of phytochromes, at the whole plant and subcellular levels, will aid in elucidating the mechanism of phytochrome function. This review, which summarizes information about phytochrome distribution, has an emphasis on recent reports in which the molecular species of phytochrome are differentiated. However, classical data are also included and reinterpreted using knowledge of the phytochrome family.
光敏色素是介导植物多种光反应的色蛋白。光敏色素蛋白由一个基因家族编码,目前正在几种植物物种中进行鉴定。对两个特征良好的家族成员 PhyA 和 PhyB 的特定类型突变体的分析表明,这些蛋白具有不同的功能。关于光敏色素如何执行其独特而多样的功能的机制,还有很多需要了解。希望有关植物色素在整个植物和亚细胞水平上定位的信息将有助于阐明植物色素功能的机制。本综述总结了有关光敏色素分布的信息,重点介绍了最近使用光敏色素家族知识区分光敏色素分子种类的报告。然而,也包括了经典数据,并使用光敏色素家族的知识进行了重新解释。