Monte Isabel
ZMBP, University of Tuebingen, Auf der Morgenstelle 32, 72076 Tuebingen Germany.
Curr Opin Plant Biol. 2023 Dec;76:102470. doi: 10.1016/j.pbi.2023.102470. Epub 2023 Oct 4.
The emergence of plant hormone signaling pathways is deeply intertwined with land plant evolution. In angiosperms, two plant hormones, salicylic Acid (SA) and Jasmonates (JAs), play a key role in plant defense, where JAs-mediated defenses are typically activated in response to herbivores and necrotrophic pathogens, whereas SA is prioritized against hemi/biotrophic pathogens. Thus, studying the evolution of SA and JAs and their crosstalk is essential to understand the evolution of molecular plant-microbe interactions (EvoMPMI) in land plants. Recent advances in the evolution of SA and JAs biosynthesis, signaling, and crosstalk in land plants illustrated that the insight gained in angiosperms does not necessarily apply to non-seed plant lineages, where the receptors perceive different ligands and the hormones activate pathways independently on the canonical receptors. In this review, recent findings on the two main defense hormones (JAs and SA) in non-seed plants, including functional studies in the bryophyte model Marchantia polymorpha, will be discussed.
植物激素信号通路的出现与陆地植物的进化紧密相连。在被子植物中，两种植物激素，水杨酸（SA）和茉莉酸（JAs），在植物防御中起关键作用，其中JAs介导的防御通常在受到食草动物和坏死性病原菌攻击时被激活，而SA则优先用于对抗半活体营养型/活体营养型病原菌。因此，研究SA和JAs的进化及其相互作用对于理解陆地植物中分子植物 - 微生物相互作用（EvoMPMI）的进化至关重要。陆地植物中SA和JAs生物合成、信号传导及相互作用进化方面的最新进展表明，在被子植物中获得的见解不一定适用于非种子植物谱系，在这些谱系中，受体感知不同的配体，并且激素独立于经典受体激活信号通路。在这篇综述中，将讨论非种子植物中两种主要防御激素（JAs和SA）的最新研究结果，包括在苔藓植物模式生物地钱中的功能研究。
