Halder Koushik, Chaudhuri Abira, Abdin Malik Z, Majee Manoj, Datta Asis
National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi 110067, India.
Centre for Transgenic Plant Development, Department of Biotechnology, School of Chemical and Life Sciences, Jamia Hamdard, New Delhi 110062, India.
Plants (Basel). 2022 May 29;11(11):1449. doi: 10.3390/plants11111449.
Plants' stress response machinery is characterized by an intricate network of signaling cascades that receive and transmit environmental cues and ultimately trigger transcriptional reprogramming. The family of epigenetic regulators that are the key players in the stress-induced signaling cascade comprise of chromatin remodelers, histone modifiers, DNA modifiers and regulatory non-coding RNAs. Changes in the histone modification and DNA methylation lead to major alterations in the expression level and pattern of stress-responsive genes to adjust with abiotic stress conditions namely heat, cold, drought and salinity. The spotlight of this review falls primarily on the chromatin restructuring under severe abiotic stresses, crosstalk between epigenetic regulators along with a brief discussion on stress priming in plants.
植物的应激反应机制以复杂的信号级联网络为特征，该网络接收并传递环境信号，最终触发转录重编程。在应激诱导信号级联中起关键作用的表观遗传调控因子家族包括染色质重塑因子、组蛋白修饰因子、DNA修饰因子和调控性非编码RNA。组蛋白修饰和DNA甲基化的变化会导致应激反应基因的表达水平和模式发生重大改变，以适应非生物胁迫条件，即高温、低温、干旱和盐度。本综述主要聚焦于严重非生物胁迫下的染色质重塑、表观遗传调控因子之间的相互作用，以及对植物应激引发的简要讨论。
