Histone Acetylation Changes in Plant Response to Drought Stress.
Histone Acetylation Changes in Plant Response to Drought Stress.
复制标题
组蛋白乙酰化对植物对干旱胁迫的反应变化。
作者：
Li S;He X;Gao Y;Zhou C;Chiang VL;Li W
干旱胁迫会对健康的生态系统造成反复的破坏，因为它对植物的生长和生产力有重大的不利影响。然而，植物已经通过增加水分吸收和传导、减少水分损失和转换生长阶段等多种策略来避免干旱和恢复生存能力。了解植物如何应对和调节干旱胁迫，对于创造和培育更好的植物以帮助维持健康的生态系统将是重要的。表观遗传标记是通过改变染色质结构来控制相关基因的转录，从而影响植物对干旱的反应和抗旱性的一组调控因子。组蛋白乙酰化是一种普遍存在的表观遗传标记。组蛋白乙酰化水平由组蛋白乙酰转移酶(HATS)和组蛋白脱乙酰酶(HDACs)调节，决定着染色质是开放的还是封闭的，从而控制DNA结合蛋白的转录激活。本文综述了组蛋白乙酰化在植物对干旱胁迫响应中的变化，并对HATS和HDACs在干旱响应和抗性中的作用进行了综述。
Drought stress causes recurrent damage to a healthy ecosystem because it has major adverse effects on the growth and productivity of plants. However, plants have developed drought avoidance and resilience for survival through many strategies, such as increasing water absorption and conduction, reducing water loss and conversing growth stages. Understanding how plants respond and regulate drought stress would be important for creating and breeding better plants to help maintain a sound ecosystem. Epigenetic marks are a group of regulators affecting drought response and resilience in plants through modification of chromatin structure to control the transcription of pertinent genes. Histone acetylation is an ubiquitous epigenetic mark. The level of histone acetylation, which is regulated by histone acetyltransferases (HATs) and histone deacetylases (HDACs), determines whether the chromatin is open or closed, thereby controlling access of DNA-binding proteins for transcriptional activation. In this review, we summarize histone acetylation changes in plant response to drought stress, and review the functions of HATs and HDACs in drought response and resistance.
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