Terzi L C, Simpson G G
Scottish Crop Research Institute, Invergowrie, UK.
Curr Top Microbiol Immunol. 2008;326:201-18. doi: 10.1007/978-3-540-76776-3_11.
Plants control the time at which they flower by integrating environmental cues such as day length and temperature with an endogenous program of development. Flowering time is a quantitative trait and a model for how precision in gene regulation is delivered. In this review, we reveal that flowering time control is particularly rich in RNA processing-based gene regulatory phenomena. We review those factors which function in conserved RNA processing events like alternative 3' end formation, splicing, RNA export and miRNA biogenesis and how they affect flowering time. Likewise, we review the novel plant-specific RNA-binding proteins identified as regulators of flowering time control. In addition, we add to the network of flowering time control pathways, information on alternative processing of flowering time gene pre-mRNAs. Finally, we describe new approaches to dissect the mechanisms which underpin this control.
植物通过整合环境线索（如日照长度和温度）与内源性发育程序来控制开花时间。开花时间是一个数量性状，也是基因调控精度如何实现的一个模型。在本综述中，我们揭示开花时间控制在基于RNA加工的基因调控现象方面尤为丰富。我们综述了那些在保守的RNA加工事件（如可变3'端形成、剪接、RNA输出和miRNA生物合成）中起作用的因子，以及它们如何影响开花时间。同样，我们综述了被鉴定为开花时间控制调节因子的新型植物特异性RNA结合蛋白。此外，我们在开花时间控制途径网络中增加了关于开花时间基因前体mRNA可变加工的信息。最后，我们描述了剖析这种控制背后机制的新方法。
