Submitted to: The Plant Cell
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 5/2/2013
Publication Date: 5/23/2013
Citation: Xia, R., Myers, B., Liu, Z., Beers, E., Liu, Z. 2013. MicroRNA superfamilies descended from miR390 and their roles in secondary small interfering RNA biogenesis in eudicots. The Plant Cell. 25:1-18. Interpretive Summary:
Technical Abstract: MiRNAs have been demonstrated to regulate diverse biological processes through cleavage of gene transcripts. Some of miRNAs acquire additional function and their cleavage can incite production of secondary small RNAs which possibly provoke a novel regulatory cascade. In this study, we investigated how a group of miRNAs represses a gene family in peach and apple. Interestingly, we found that the cleavage of this group of miRNAs on mRNAs can also trigger secondary small RNA production with diverse complex mechanisms among peach, apple, soybean and strawberry. We also show that this group of miRNAs is evolutionarily related to several other miRNA families in plants. Potential function of this special group of miRNAs in plants is discussed.