Naaz Sheeba, Pande Anjali, Laxmi Ashverya
National Institute of Plant Genome Research, New Delhi, India.
Front Plant Sci. 2025 Feb 28;16:1525336. doi: 10.3389/fpls.2025.1525336. eCollection 2025.
In the intricate world of plant responses to environmental stress, the concept of thermomemory has emerged as a fascinating and complex phenomenon. Plants, as sessile organisms, continually face the challenge of adapting to fluctuating climates, and the ability to "remember" prior heat stress encounters, a phenomenon known as thermomemory is a testament to their remarkable adaptability. Nitric oxide (NO), a versatile signaling molecule in plant physiology, has been implicated in a myriad of cellular processes crucial for stress adaptation. From its involvement in stomatal regulation to its influence on gene expression and antioxidant defense mechanisms, NO emerges as a central orchestrator in the plant's response to elevated temperatures. Exploration of NO-mediated pathways provides insights into how plants not only cope with immediate heat stress but also retain a memory of these encounters. Unraveling the molecular intricacies of NO's involvement in thermomemory enhances our understanding of the sophisticated strategies employed by plants to navigate a changing climate, offering potential avenues for innovative approaches to enhancing crop resilience and sustainable agriculture.
在植物对环境胁迫反应的复杂世界中，热记忆的概念已成为一种引人入胜且复杂的现象。植物作为固着生物，不断面临适应气候变化的挑战，而“记住”先前热胁迫遭遇的能力，即所谓的热记忆，证明了它们非凡的适应性。一氧化氮（NO）是植物生理学中一种多功能信号分子，参与了众多对胁迫适应至关重要的细胞过程。从其参与气孔调节到对基因表达和抗氧化防御机制的影响，NO在植物对高温的反应中成为核心协调者。对NO介导途径的探索有助于深入了解植物不仅如何应对即时热胁迫，还如何保留对这些遭遇的记忆。揭示NO参与热记忆的分子复杂性，增进了我们对植物应对气候变化所采用的复杂策略的理解，为增强作物抗逆性和可持续农业的创新方法提供了潜在途径。
