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密切相关。在被子植物中，水杨酸 (SA) 和茉莉酸 (JAs) 两种植物激素在植物防御中发挥着关键作用，其中 JAs 介导的防御通常在响应食草动物和坏死性病原体时被激活，而 SA 优先针对半/生物营养性病原体病原体。因此，研究 SA 和 JAs 的进化及其串扰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、信号传导和串扰进化的最新进展表明，在被子植物中获得的见解不一定适用于非种子植物谱系，在非种子植物谱系中，受体感知不同的配体，激素独立于配体激活途径。典型受体。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）的最新发现，包括苔藓植物模型地钱的功能研究。