Department of Biological Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, Ikoma 630-0192, Nara, Japan.
School of Applied Science, Republic Polytechnic, Singapore 738964, Singapore.
Int J Mol Sci. 2023 Aug 27;24(17):13297. doi: 10.3390/ijms241713297.
Heat stress (HS) is becoming an increasingly large problem for food security as global warming progresses. As sessile species, plants have evolved different mechanisms to cope with the disruption of cellular homeostasis, which can impede plant growth and development. Here, we summarize the mechanisms underlying transcriptional regulation mediated by transcription factors, epigenetic regulators, and regulatory RNAs in response to HS. Additionally, cellular activities for adaptation to HS are discussed, including maintenance of protein homeostasis through protein quality control machinery, and autophagy, as well as the regulation of ROS homeostasis via a ROS-scavenging system. Plant cells harmoniously regulate their activities to adapt to unfavorable environments. Lastly, we will discuss perspectives on future studies for improving urban agriculture by increasing crop resilience to HS.
随着全球变暖的加剧，热应激（HS）正成为食品安全的一个日益严重的问题。作为固着生物，植物已经进化出不同的机制来应对细胞内稳态的破坏，这可能会阻碍植物的生长和发育。在这里，我们总结了转录因子、表观遗传调节剂和调节 RNA 介导的转录调控机制，以响应热应激。此外，还讨论了细胞适应热应激的活动，包括通过蛋白质质量控制机制和自噬来维持蛋白质内稳态，以及通过 ROS 清除系统来调节 ROS 内稳态。植物细胞协调它们的活动以适应不利的环境。最后，我们将讨论通过提高作物对热应激的抗性来改善城市农业的未来研究展望。
