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J Integr Plant Biol, 49 (6): 817-826, Research Article
Micro RNAs and Short-interfering RNAs in Plants
Ramanjulu Sunkar and Jian-Kang Zhu
Abstract

Gene silencing can occur either at the transcriptional level or post-transcriptional level or both. Many instances of sequence-specific silencing requires small RNAs that can be divided into two major classes: microRNAs (miRNAs) and short-interfering RNAs (siRNAs). miRNAs function in post-transcriptional gene silencing by guiding mRNA degradation or translational repression. Endogenous siRNAs are more diverse in plants than in animals and can direct post-transcriptional gene silencing through mRNA degradation or transcriptional gene silencing by triggering DNA methylation and histone modifications. This review discusses recent advances in the field of small RNA-guided gene silencing in plants including rice.

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Published: 05 June 2007
© 2007 Institute of Botany, Chinese Academy of Sciences
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