中文摘要：

光敏色素是植物体内的重要光受体,主要感受红光和远红光,调节着植物生命循环中许多重要发育过程。水稻光敏色素基因家族包括3个成员,即PHYA、PHYB和PHYC。对水稻光敏色素突变体的研究表明,3个水稻光敏色素基因在水稻光形态建成中既有独特作用又有交叉作用。根据已有报道和作者在该领域的研究工作,总结了光敏色素在水稻幼苗去黄化、根的向地性和延伸、株型、花期和育性等发育过程中的作用,并提出了水稻光敏色素研究领域急需解决的问题。

英文摘要：

Phytochrome family mainly senses red and far-red light to regulate a range of developmental processes throughout the life cycle of plants.Rice phytochrome gene family is composed of three members known as PHYA,PHYB and PHYC.It has been elucidated that individual phytochromes display both unique and overlapping roles in rice photomorphogenesis by characterization of all rice phytochrome mutants including single mutants,all combinations of double mutants as well as triple mutant.Based on the published data and authors′ ongoing studies,current knowledge of rice phytochrome functions in regulating seedling deetiolation,root gravitropic response and elongation,plant architecture,flowering time and fertility is summarized.Additionally,the important issues in the field of rice phytochromes are proposed.