Plant Biochemistry and Molecular Biology Laboratory, Department of Plant Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan.
Center for Plant Sciences and Biodiversity, University of Swat, Kanju, 19201, Pakistan.
Plant Cell Rep. 2021 Dec;40(12):2247-2271. doi: 10.1007/s00299-021-02696-3. Epub 2021 Apr 22.
We summarize recent studies focusing on the molecular basis of plant heat stress response (HSR), how HSR leads to thermotolerance, and promote plant adaptation to recurring heat stress events. The global crop productivity is facing unprecedented threats due to climate change as high temperature negatively influences plant growth and metabolism. Owing to their sessile nature, plants have developed complex signaling networks which enable them to perceive changes in ambient temperature. This in turn activates a suite of molecular changes that promote plant survival and reproduction under adverse conditions. Deciphering these mechanisms is an important task, as this could facilitate development of molecular markers, which could be ultimately used to breed thermotolerant crop cultivars. In current article, we summarize mechanisms involve in plant heat stress acclimation with special emphasis on advances related to heat stress perception, heat-induced signaling, heat stress-responsive gene expression and thermomemory that promote plant adaptation to short- and long-term-recurring heat-stress events. In the end, we will discuss impact of emerging technologies that could facilitate the development of heat stress-tolerant crop cultivars.
我们总结了近期有关植物热应激响应（HSR）的分子基础、HSR 如何导致耐热性以及促进植物适应反复热应激事件的研究。由于气候变化，全球作物生产力正面临前所未有的威胁，因为高温会对植物的生长和新陈代谢产生负面影响。由于植物的固着特性，它们已经发展出复杂的信号网络，使它们能够感知环境温度的变化。这反过来又激活了一系列促进植物在不利条件下生存和繁殖的分子变化。破译这些机制是一项重要任务，因为这可以促进分子标记的开发，最终可以用于培育耐热作物品种。在当前的文章中，我们总结了植物热应激适应的机制，特别强调了与热应激感知、热诱导信号、热应激响应基因表达和热记忆相关的进展，这些进展促进了植物对短期和长期反复热应激事件的适应。最后，我们将讨论新兴技术的影响，这些技术可以促进耐热作物品种的开发。
