Rothamsted Research, Harpenden, Hertfordshire AL5 2JQ, UK.
Trends Plant Sci. 2011 Oct;16(10):568-78. doi: 10.1016/j.tplants.2011.06.007. Epub 2011 Aug 6.
Stamen development is governed by a conserved genetic pathway, within which the role of hormones has been the subject of considerable recent research. Our understanding of the involvement of gibberellin (GA) signalling in this developmental process is further advanced than for the other phytohormones, and here we review recent experimental results in rice (Oryza sativa) and Arabidopsis (Arabidopsis thaliana) that have provided insight into the timing and mechanisms of GA regulation of stamen development, identifying the tapetum and developing pollen as major targets. GA signalling governs both tapetum secretory functions and entry into programmed cell death via the GAMYB class of transcription factor, the targets of which integrate with the established genetic framework for the regulation of tapetum function at multiple hierarchical levels.
雄蕊的发育受一个保守的遗传途径调控，其中激素的作用是最近相当多研究的主题。我们对赤霉素（GA）信号在这个发育过程中的参与的理解比其他植物激素更为深入，在这里我们综述了最近在水稻（Oryza sativa）和拟南芥（Arabidopsis thaliana）中的实验结果，这些结果为 GA 调控雄蕊发育的时间和机制提供了深入的了解，确定了绒毡层和正在发育的花粉是主要的靶标。GA 信号通过 GAMYB 类转录因子调控绒毡层的分泌功能和程序性细胞死亡的进入，其靶标与在多个层次上调控绒毡层功能的既定遗传框架整合。
