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MicroRNA159 Can Act as a Switch or Tuning MicroRNA Independently of Its Abundance in Arabidopsis

Alonso-Peral, Maria M.; Sun, Cheng; Millar, Anthony A.


The efficacy of gene silencing by plant microRNAs (miRNAs) is generally assumed to be predominantly determined by their abundance. In Arabidopsis the highly abundant miRNA, miR159, acts as a molecular "switch" in vegetative tissues completely silencing the expression of two GAMYB-like genes, MYB33 and MYB65. Here, we show that miR159 has a diminished silencing efficacy in the seed. Using reporter gene constructs, we determined that MIR159 and MYB33 are co-transcribed in the aleurone and embryo...[Show more]

CollectionsANU Research Publications
Date published: 2012-04-12
Type: Journal article
Source: PLoS ONE
DOI: 10.1371/journal.pone.0034751


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