Plant small RNAs: biogenesis, mode of action and their roles in abiotic stresses.
Plant small RNAs: biogenesis, mode of action and their roles in abiotic stresses.
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DOI：
10.1016/s1672-0229(11)60022-3
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发表时间：
2011-12
影响因子：
9.5
通讯作者：
Yadav, Sudesh Kumar
中科院分区：
文献类型：
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作者：
Guleria, Praveen;Mahajan, Monika;Bhardwaj, Jyoti;Yadav, Sudesh Kumar
小RNA（small RNA，sRNA）是存在于多种生物中的长度为18-30 nt的非编码调控元件，最初在秀丽隐杆线虫中被鉴定为小双链RNA。随着新的和改进的技术的发展，sRNA也已在植物系统中被鉴定和表征。其中，微小RNA（microRNAs，miRNAs）和小干扰RNA（smallinterferingRNAs，siRNAs）是植物中非常重要的核糖核酸调节子。各种类型的sRNA在它们的生物发生模式和它们的基因调控功能方面不同。sRNA在转录和转录后水平参与基因调控。已知它们调节植物的生长和发育。此外，sRNAs特别是植物miRNAs被发现参与了各种胁迫反应，如氧化、矿质营养缺乏、脱水，甚至机械刺激。因此，在本综述中，我们重点介绍了目前对植物sRNA的生物起源和调节机制及其对各种非生物胁迫的响应的了解。
Small RNAs (sRNAs) are 18-30 nt non-coding regulatory elements found in diverse organisms, which were initially identified as small double-stranded RNAs in Caenorhabditis elegans. With the development of new and improved technologies, sRNAs have also been identified and characterized in plant systems. Among them, micro RNAs (miRNAs) and small interfering RNAs (siRNAs) are found to be very important riboregulators in plants. Various types of sRNAs differ in their mode of biogenesis and in their function of gene regulation. sRNAs are involved in gene regulation at both transcriptional and post-transcriptional levels. They are known to regulate growth and development of plants. Furthermore, sRNAs especially plant miRNAs have been found to be involved in various stress responses, such as oxidative, mineral nutrient deficiency, dehydration, and even mechanical stimulus. Therefore, in the present review, we focus on the current understanding of biogenesis and regulatory mechanisms of plant sRNAs and their responses to various abiotic stresses.