Title |
Connecting the dots of RNA-directed DNA methylation in Arabidopsis thaliana
|
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Published in |
Chromosome Research, May 2014
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DOI | 10.1007/s10577-014-9425-9 |
Pubmed ID | |
Authors |
Pedro Costa-Nunes, Alexa Vitins, Olga Pontes |
Abstract |
Noncoding RNAs are the rising stars of genome regulation and are crucial to an organism's metabolism, development, and defense. One of their most notable functions is its ability to direct epigenetic modifications through small RNA molecules to specific genomic regions, ensuring transcriptional regulation, proper genome organization, and maintenance of genome integrity. Here, we review the current knowledge of the spatial organization of the Arabidopsis thaliana RNA-directed DNA methylation pathway within the cell nucleus, which, while known to be essential for the proper establishment of epigenetic modifications, remains poorly understood. We will also discuss possible future cytological approaches that have the potential of unveiling functional insights into how small RNA-directed epigenetics is regulated through the spatiotemporal regulation of its major components within the cell. |
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