Diurnal oscillation in the accumulation of Arabidopsis microRNAs, miR167, miR168, miR171 and miR398
Diurnal oscillation in the accumulation of Arabidopsis microRNAs, miR167, miR168, miR171 and miR398
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DOI：
10.1016/j.febslet.2009.02.024
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发表时间：
2009-03-18
期刊：
影响因子：
3.5
通讯作者：
San Segundo, Blanca
中科院分区：
文献类型：
--
作者：
Sire, Christelle;Beatriz Moreno, Ana;San Segundo, Blanca
MicroRNAs(MiRNAs)是在转录后水平上调节真核基因表达的小RNA。植物miRNAs参与发育过程和对环境的适应。我们发现4个拟南芥miRNAs(miR171、miR398、MIR168和miR167)的积累在昼夜周期中振荡，它们的积累在白天的光周期中增加，在黑暗中减少。MiRNA积累的这种振荡模式不受生物钟的控制。这些结果表明，光在控制miRNA的积累方面具有潜在的作用。使拟南芥miRNA基因表达的调控达到一个新的水平。(C)2009年欧洲生化学会联合会。爱思唯尔出版公司版权所有。
MicroRNAs (miRNAs) are small RNAs acting as regulators of eukaryotic gene expression at the post-transcriptional level. Plant miRNAs have been implicated in developmental processes and adaptation to the environment. We show that the accumulation of four Arabidopsis miRNAs (miR171, miR398, miR168 and miR167) oscillates during the diurnal cycle, their accumulation increasing during the light period of the daytime and decreasing in darkness. This oscillatory pattern of miRNA accumulation is not governed by the circadian clock. These results suggest a potential role of light in controlling miRNA accumulation while de. ning a new level of regulation of miRNA gene expression in Arabidopsis. (C) 2009 Federation of European Biochemical Societies. Published by Elsevier B. V. All rights reserved.