Background

Although plants may be regularly exposed to various abiotic stresses, including drought, salt, cold, heat, heavy metals, and UV-B throughout their lives, it is not possible to actively escape from such stresses due to the immobile nature of plants. To overcome adverse environmental stresses, plants have developed adaptive systems that allow appropriate responses to diverse environmental cues; such responses can be achieved by fine-tuning or controlling genetic and epigenetic regulatory systems. Epigenetic mechanisms such as DNA or histone modifications and modulation of chromatin accessibility have been shown to regulate the expression of stress-responsive genes in struggles against abiotic stresses.

Objective

Herein, the current progress in elucidating the epigenetic regulation of abiotic stress signaling in plants has been summarized in order to further understand the systems plants utilize to effectively respond to abiotic stresses.

Methods

This review focuses on the action mechanisms of various components that epigenetically regulate plant abiotic stress responses, mainly in terms of DNA methylation, histone methylation/acetylation, and chromatin remodeling.

Conclusions

This review can be considered a basis for further research into understanding the epigenetic control system for abiotic stress responses in plants. Moreover, the knowledge of such systems can be effectively applied in developing novel methods to generate abiotic stress resistant crops.

中文翻译：

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植物非生物胁迫信号的表观遗传控制

背景

尽管植物在其一生中可能会定期暴露于各种非生物胁迫，包括干旱、盐分、寒冷、高温、重金属和 UV-B，但由于植物的不动性，不可能主动摆脱这些胁迫。为了克服不利的环境压力，植物已经开发出适应系统，可以对不同的环境线索做出适当的反应；这种反应可以通过微调或控制遗传和表观遗传调控系统来实现。表观遗传机制，例如 DNA 或组蛋白修饰和染色质可及性的调节，已被证明可调节应激反应基因在对抗非生物应激的过程中的表达。

客观的

本文总结了阐明植物中非生物胁迫信号的表观遗传调控的当前进展，以进一步了解植物用于有效应对非生物胁迫的系统。

方法

本综述着重于表观遗传调节植物非生物胁迫反应的各种成分的作用机制，主要是在 DNA 甲基化、组蛋白甲基化/乙酰化和染色质重塑方面。

结论

这篇综述可以被认为是进一步研究了解植物非生物胁迫反应的表观遗传控制系统的基础。此外，这些系统的知识可以有效地应用于开发产生非生物胁迫抗性作物的新方法。