Plant RNAi Biology Group, International Centre for Genetic Engineering and Biotechnology, New Delhi 110067, India.
Department of Biotechnology, College of Natural and Computational Science, Debre Birhan University, Debre Birhan P.O. Box 445, Ethiopia.
Int J Mol Sci. 2021 Nov 20;22(22):12519. doi: 10.3390/ijms222212519.
Drought stress causes changes in the morphological, physiological, biochemical and molecular characteristics of plants. The response to drought in different plants may vary from avoidance, tolerance and escape to recovery from stress. This response is genetically programmed and regulated in a very complex yet synchronized manner. The crucial genetic regulations mediated by non-coding RNAs (ncRNAs) have emerged as game-changers in modulating the plant responses to drought and other abiotic stresses. The ncRNAs interact with their targets to form potentially subtle regulatory networks that control multiple genes to determine the overall response of plants. Many long and small drought-responsive ncRNAs have been identified and characterized in different plant varieties. The miRNA-based research is better documented, while lncRNA and transposon-derived RNAs are relatively new, and their cellular role is beginning to be understood. In this review, we have compiled the information on the categorization of non-coding RNAs based on their biogenesis and function. We also discuss the available literature on the role of long and small non-coding RNAs in mitigating drought stress in plants.
干旱胁迫会引起植物形态、生理、生化和分子特性的变化。不同植物对干旱的响应可能从避免、耐受和逃避到对胁迫的恢复不等。这种响应是由遗传程序控制的，并以非常复杂但同步的方式进行调节。非编码 RNA（ncRNA）介导的关键遗传调控已成为调节植物对干旱和其他非生物胁迫响应的重要因素。ncRNA 与其靶标相互作用，形成潜在的微妙调控网络，控制多个基因，从而决定植物的整体响应。在不同的植物品种中已经鉴定和描述了许多长链和短链的干旱响应 ncRNA。基于 miRNA 的研究有更好的记录，而 lncRNA 和转座子衍生的 RNA 相对较新，它们的细胞作用开始被理解。在这篇综述中，我们根据非编码 RNA 的生物发生和功能对其进行了分类，并讨论了关于长链和短链非编码 RNA 在减轻植物干旱胁迫方面作用的现有文献。
