Tian Hainan, Xu Lu, Li Xin, Zhang Yuelin
Key Laboratory of Bio-resource and Eco-environment of Ministry of Education, The College of Life Sciences, Sichuan University, Chengdu, 610064, Sichuan, China.
Department of Botany, University of British Columbia, Vancouver, V6T 1Z4, BC, Canada.
J Integr Plant Biol. 2025 Mar;67(3):773-785. doi: 10.1111/jipb.13820. Epub 2024 Dec 23.
Land plants use diverse hormones to coordinate their growth, development and responses against biotic and abiotic stresses. Salicylic acid (SA) is an essential hormone in plant immunity, with its levels and signaling tightly regulated to ensure a balanced immune output. Over the past three decades, molecular genetic analyses performed primarily in Arabidopsis have elucidated the biosynthesis and signal transduction pathways of key plant hormones, including abscisic acid, jasmonic acid, ethylene, auxin, cytokinin, brassinosteroids, and gibberellin. Crosstalk between different hormones has become a major focus in plant biology with the goal of obtaining a full picture of the plant hormone signaling network. This review highlights the roles of SA in plant immunity and summarizes our current understanding of the pairwise interactions of SA with other major plant hormones. The complexity of these interactions is discussed, with the hope of stimulating research to address existing knowledge gaps in hormone crosstalk, particularly in the context of balancing plant growth and defense.
陆地植物利用多种激素来协调其生长、发育以及对生物和非生物胁迫的反应。水杨酸（SA）是植物免疫中的一种重要激素，其水平和信号传导受到严格调控，以确保免疫输出平衡。在过去三十年中，主要在拟南芥中进行的分子遗传学分析阐明了包括脱落酸、茉莉酸、乙烯、生长素、细胞分裂素、油菜素内酯和赤霉素在内的关键植物激素的生物合成和信号转导途径。不同激素之间的相互作用已成为植物生物学的一个主要焦点，目标是全面了解植物激素信号网络。本综述重点介绍了SA在植物免疫中的作用，并总结了我们目前对SA与其他主要植物激素之间两两相互作用的理解。讨论了这些相互作用的复杂性，希望能激发相关研究，以填补激素相互作用方面现有知识的空白，特别是在平衡植物生长和防御方面。
