Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
2048666 | FEBS Letters | 2009 | 6 Pages |
Abstract
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 defining a new level of regulation of miRNA gene expression in Arabidopsis.
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Agricultural and Biological Sciences
Plant Science
Authors
Christelle Siré, Ana Beatriz Moreno, Meritxell Garcia-Chapa, Juan José López-Moya, Blanca San Segundo,