植物成花素的研究进展

Research Progress on Florigen in Plants

许多植物由营养生长向生殖生长的转换都是由日照长度控制的,而植物叶片可感知日长信号并诱导成花素的合成。成花素从韧皮部运输到茎顶端,使顶端分生组织基因表达发生变化进而成花。其中,FT作为成花素的主要组分,在该转换过程中处于核心地位。本文综合近年的研究,介绍成花素及其作用机理。

The transition from vegetative to reproductive growth is controlled by day length in many plant species. Day length is perceived in leaves and induces florigen, which moves through the phloem to the shoot apex. At the shoot apical meristem （SAM）, florigen causes changes in gene expression and promotes flowering. FT protein plays a key role in the transition. This paper provided an overview of the structural and biochemical features of florigen according to recent studies.