Lee Kyounghee, Seo Pil Joon
Department of Chemistry, Seoul National University, Seoul, South Korea.
Research Institute of Basic Sciences, Seoul National University, Seoul, South Korea.
Front Plant Sci. 2022 May 18;13:880680. doi: 10.3389/fpls.2022.880680. eCollection 2022.
Wounding not only induces the expression of damage-responsive genes, but also initiates physiological changes, such as tissue repair, vascular reconnection, and organogenesis in locally damaged tissues. Wound-induced signals also propagate from the site of wounding to distal organs to elicit a systemic response. Electrical signaling, which is the most conserved type of systemic signaling in eukaryotes, is triggered by wound-induced membrane potential changes. Changes in membrane potential spread toward systemic tissues in synergy with chemical and hydraulic signals. Here, we review current knowledge on wound-induced local and systemic responses in plants. We focus particularly on how wound-activated plasma membrane-localized ion channels and pumps propagate systemic information about wounding to induce downstream molecular responses in distal tissues. Finally, we propose future studies that could lead to a better understanding of plant electrical signals and their role in physiological responses to wounding.
伤口不仅会诱导损伤响应基因的表达，还会引发局部受损组织中的生理变化，如组织修复、血管重新连接和器官发生。伤口诱导的信号也会从伤口部位传播到远端器官，引发全身反应。电信号是真核生物中最保守的一种全身信号，由伤口诱导的膜电位变化触发。膜电位的变化与化学和水力信号协同作用，向全身组织传播。在这里，我们综述了目前关于植物伤口诱导的局部和全身反应的知识。我们特别关注伤口激活的质膜定位离子通道和泵如何传播有关伤口的全身信息，以诱导远端组织中的下游分子反应。最后，我们提出了未来的研究方向，这些研究可能有助于更好地理解植物电信号及其在伤口生理反应中的作用。
