Instituto de Biología Molecular y Celular de Plantas, Consejo Superior de Investigaciones Científicas-Universidad Politécnica de Valencia, 46022 Valencia, Spain; email:
Department of Botany and Plant Sciences, University of California, Riverside, California 92521, USA; email:
Annu Rev Plant Biol. 2020 Apr 29;71:327-353. doi: 10.1146/annurev-arplant-050718-100309. Epub 2020 Feb 4.
This review focuses on the evolution of plant hormone signaling pathways. Like the chemical nature of the hormones themselves, the signaling pathways are diverse. Therefore, we focus on a group of hormones whose primary perception mechanism involves an Skp1/Cullin/F-box-type ubiquitin ligase: auxin, jasmonic acid, gibberellic acid, and strigolactone. We begin with a comparison of the core signaling pathways of these four hormones, which have been established through studies conducted in model organisms in the Angiosperms. With the advent of next-generation sequencing and advanced tools for genetic manipulation, the door to understanding the origins of hormone signaling mechanisms in plants beyond these few model systems has opened. For example, in-depth phylogenetic analyses of hormone signaling components are now being complemented by genetic studies in early diverging land plants. Here we discuss recent investigations of how basal land plants make and sense hormones. Finally, we propose connections between the emergence of hormone signaling complexity and major developmental transitions in plant evolution.
本篇综述聚焦于植物激素信号通路的演化。与激素本身的化学性质类似，信号通路具有多样性。因此，我们重点关注一组主要感知机制涉及 Skp1/Cullin/F-box 型泛素连接酶的激素：生长素、茉莉酸、赤霉素和独脚金内酯。我们首先比较了这四种激素在被子植物模式生物中已建立的核心信号通路。随着下一代测序和遗传操作先进工具的出现，人们对除这几个模式系统之外植物激素信号机制起源的理解之门已经打开。例如，激素信号组分的深入系统发育分析现在正在通过早期分化的陆地植物的遗传研究得到补充。在这里，我们讨论了关于基础陆地植物如何合成和感知激素的最新研究。最后，我们提出了激素信号复杂性的出现与植物进化中主要发育转变之间的联系。
