Li Wei, Sun Guoqing, Yang Wentao, Lin Naiyi, Li Kaihuai, Liu Fengquan, Chang 常明 Ming
State Key Laboratory of Green Pesticide, Guizhou University, Guiyang 550025, China.
Key Laboratory of Soybean Disease and Pest Control (Ministry of Agriculture and Rural Affairs), Key Laboratory of Plant Immunity, College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China.
Sci Adv. 2025 Sep 12;11(37):eady3327. doi: 10.1126/sciadv.ady3327. Epub 2025 Sep 10.
Salicylic acid (SA) is a key defense hormone shaped by temperature. High temperatures suppress, while low temperatures enhance, SA biosynthesis and signaling, thereby influencing plant immunity and temperature resilience. This review synthesizes current understanding of how temperature modulates SA pathways and their cross-talk with other hormones to balance growth and defense. We also propose a conceptual model positioning SA as a central integrator of temperature perception, immune regulation, and hormonal signaling. However, key questions remain: How do plants sense temperature shifts to regulate SA dynamics? How do temperature-induced epigenetic changes in SA pathways contribute to long-term adaptation? And how can these insights inform crop improvement? Addressing these gaps is essential for developing climate-resilient crops.
水杨酸（SA）是一种受温度影响的关键防御激素。高温会抑制，而低温会增强SA的生物合成和信号传导，从而影响植物的免疫力和温度适应性。本综述综合了目前对温度如何调节SA途径及其与其他激素的相互作用以平衡生长和防御的理解。我们还提出了一个概念模型，将SA定位为温度感知、免疫调节和激素信号传导的中心整合者。然而，关键问题仍然存在：植物如何感知温度变化以调节SA动态？温度诱导的SA途径表观遗传变化如何促进长期适应？以及这些见解如何为作物改良提供信息？填补这些空白对于培育适应气候变化的作物至关重要。
