水稻开花的光温调控分子机理

水稻一生要经历营养生长和生殖生长两个阶段,只有顺利从营养生长向生殖生长转变,水稻才能开花结实。水稻的开花是环境因素与控制水稻开花基因网络相互作用的结果,光照和温度是调控水稻开花的两个重要的环境因子。关于水稻如何感知光照和温度变化,然后启动内部基因的表达来调控水稻开花,科学家提出了一些假说试图解释这个问题。近几年对水稻的开花调控途径的研究有了长足进展,人们对该问题有了新认识。结合前人的研究结果,分析了水稻在不同光温调控下的分子机理。

Regulatory Pathways of Rice Flowering in Different Light and Temperature Conditions

The transition from vegetative growth to reproductive growth (the floral transition) is a crucial event in the life cycle of rice, which is regulated by both endogenous genes and environmental factors. Rice would not normally flower without  this transition. Light and temperature are two important environmental factors to regulate the floral transition in rice. Interestingly, how could rice perceive the change in photoperiod or temperature, and then initiate the expression of endogenous genes to control this transition? Scientists had contributed to answer this question for many years.With great progresses in rice flowering regulation recently, new evidences and understanding for the regulatory pathways of rice flowering have been provided. Based on previous studies and our results, the latest research progresses involving in molecular mechanisms of rice flowering are summarized and analyzed.