MicroRNA-mediated DNA methylation in plants |
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| Authors: | Xiaoyun Jia Jun Yan Guiliang Tang |
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| Institution: | 1. College of Life Science, Shanxi Agricultural University, Taigu 030801, China;Gene Suppression Laboratory, Department of Plant and Soil Sciences and KTRDC, University of Kentucky, Lexington, KY 40546, USA
2. Gene Suppression Laboratory, Department of Plant and Soil Sciences and KTRDC, University of Kentucky, Lexington, KY 40546, USA |
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| Abstract: | DNA methylation, a major event in epigenetics, plays an essential role in the control of gene expression. Increasing evidence
suggests that long and short non-coding RNAs are involved extensively in plants to direct the establishment, spread, and removal
of DNA cytosine methylation throughout their genomes. Yet, little has been known about the role of microRNAs (miRNAs) in DNA
methylation although the role of small interfering RNAs (siRNAs) in DNA methylation has been well established. Several recent
studies, however, provided the evidence for miRNA-directed DNA methylation in plants, and the working mechanisms still need
to be fully explored. In this review, we highlight the key features of miRNA-directed DNA methylation in plants and provide
insight into the complexities of such an event in plants. The interaction between miRNAs and the epigenetic machinery and
the future potential research questions are briefly discussed. |
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