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首页> 外文期刊>International Journal of Molecular Sciences >Small RNA Mobility: Spread of RNA Silencing Effectors and its Effect on Developmental Processes and Stress Adaptation in Plants
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Small RNA Mobility: Spread of RNA Silencing Effectors and its Effect on Developmental Processes and Stress Adaptation in Plants

机译：小RNA迁移性：RNA沉默效应子的传播及其对植物发育过程和胁迫适应的影响

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摘要

Plants are exposed every day to multiple environmental cues, and tight transcriptome reprogramming is necessary to control the balance between responses to stress and processes of plant growth. In this context, the silencing phenomena mediated by small RNAs can drive transcriptional and epigenetic regulatory modifications, in turn shaping plant development and adaptation to the surrounding environment. Mounting experimental evidence has recently pointed to small noncoding RNAs as fundamental players in molecular signalling cascades activated upon exposure to abiotic and biotic stresses. Although, in the last decade, studies on stress responsive small RNAs increased significantly in many plant species, the physiological responses triggered by these molecules in the presence of environmental stresses need to be further explored. It is noteworthy that small RNAs can move either cell-to-cell or systemically, thus acting as mobile silencing effectors within the plant. This aspect has great importance when physiological changes, as well as epigenetic regulatory marks, are inspected in light of plant environmental adaptation. In this review, we provide an overview of the categories of mobile small RNAs in plants, particularly focusing on the biological implications of non-cell autonomous RNA silencing in the stress adaptive response and epigenetic modifications.
机译：植物每天都受到多种环境因素的影响，因此严格的转录组重新编程对于控制对胁迫的响应与植物生长过程之间的平衡是必要的。在这种情况下，由小RNA介导的沉默现象可以驱动转录和表观遗传调控修饰，进而影响植物的发育和对周围环境的适应性。越来越多的实验证据表明，小的非编码RNAs是暴露于非生物和生物胁迫时激活的分子信号级联反应的基本参与者。尽管在过去十年中，许多植物物种中对胁迫响应性小RNA的研究显着增加，但是在环境胁迫下由这些分子触发的生理反应仍需要进一步探索。值得注意的是，小RNA可以在细胞间或系统内移动，从而在植物中充当移动沉默效应子。当根据植物环境适应性检查生理变化以及表观遗传调控标记时，这一方面非常重要。在这篇综述中，我们提供了植物中可移动小RNA类别的概述，尤其着眼于非细胞自主RNA沉默在胁迫适应性反应和表观遗传修饰中的生物学意义。

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