PDF(Pubmed)
Abstract：
Highly repetitive adverse environmental conditions are encountered by plants multiple times during their lifecycle. These repetitive encounters with stresses provide plants an opportunity to remember and recall the experiences of past stress-associated responses, resulting in better adaptation towards those stresses. In general, this phenomenon is known as plant stress memory. According to our current understanding, epigenetic mechanisms play a major role in plants stress memory through DNA methylation, histone, and chromatin remodeling, and modulating non-coding RNAs. In addition, transcriptional, hormonal, and metabolic-based regulations of stress memory establishment also exist for various biotic and abiotic stresses. Plant memory can also be generated by priming the plants using various stressors that improve plants\' tolerance towards unfavorable conditions. Additionally, the application of priming agents has been demonstrated to successfully establish stress memory. However, the interconnection of all aspects of the underlying mechanisms of plant stress memory is not yet fully understood, which limits their proper utilization to improve the stress adaptations in plants. This review summarizes the recent understanding of plant stress memory and its potential applications in improving plant tolerance towards biotic and abiotic stresses.
摘要：
植物在其生命周期中多次遇到高度重复的不利环境条件。这些与压力的重复接触为植物提供了一个记住和回忆过去压力相关反应经验的机会，从而更好地适应这些压力。总的来说,这种现象被称为植物应激记忆。根据我们目前的理解,表观遗传机制通过DNA甲基化在植物逆境记忆中起主要作用,histone,和染色质重塑，和调节非编码RNA。此外,转录，荷尔蒙，对于各种生物和非生物胁迫，也存在基于代谢的应激记忆建立调节。植物记忆也可以通过使用各种应激源引发植物来产生，这些应激源提高植物对不利条件的耐受性。此外,已证明启动剂的应用可以成功建立应激记忆。然而,植物应激记忆的潜在机制的所有方面的相互联系尚未完全理解，这限制了它们在提高植物逆境适应方面的适当利用。这篇综述总结了植物胁迫记忆的最新认识及其在提高植物对生物和非生物胁迫的耐受性方面的潜在应用。
