Journal article
Alternate approaches to repress endogenous microRNA activity in Arabidopsis thaliana
Plant Signaling & Behavior, Vol.6(3), pp.349-359
2011
PMCID: PMC3142414
PMID: 21358288
Abstract
MicroRNAs (miRNAs) are an endogenous class of regulatory small RNA (sRNA). In plants, miRNAs are processed from short non-protein-coding messenger RNAs (mRNAs) transcribed from small miRNA genes (MIR genes). Traditionally in the model plant Arabidopsis thaliana (Arabidopsis), the functional analysis of a gene product has relied on the identification of a corresponding T-DNA insertion knockout mutant from a large, randomly-mutagenized population. However, because of the small size of MIR genes and presence of multiple, highly conserved members in most plant miRNA families, it has been extremely laborious and time consuming to obtain a corresponding single, or multiple, null mutant plant line. Our recent study published in Molecular Plant ( 1) outlines an alternate method for the functional characterization of miRNA action in Arabidopsis, termed anti-miRNA technology. Using this approach we demonstrated that the expression of individual miRNAs, or entire miRNA families, can be readily and efficiently knocked-down. Our approach is in addition to two previously reported methodologies that also allow for the targeted suppression of either individual miRNAs, or all members of a MIR gene family; these include miRNA target mimicry and transcriptional gene silencing (TGS) of MIR gene promoters. All three methodologies rely on endogenous gene regulatory machinery and in this article we provide an overview of these technologies and discuss their strengths and weaknesses in inhibiting the activity of their targeted miRNA(s).
Details
- Title
- Alternate approaches to repress endogenous microRNA activity in Arabidopsis thaliana
- Authors
- Andrew Eamens (Author) - University of SydneyMing-Bo Wang (Author) - CSIRO Plant Industry
- Publication details
- Plant Signaling & Behavior, Vol.6(3), pp.349-359
- Publisher
- Taylor & Francis Inc.
- DOI
- 10.4161/psb.6.3.14340
- ISSN
- 1559-2324
- PMID
- 21358288; PMC3142414
- Organisation Unit
- School of Health and Behavioural Sciences - Legacy; University of the Sunshine Coast, Queensland; School of Health - Biomedicine
- Language
- English
- Record Identifier
- 99656589902621
- Output Type
- Journal article
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- Domestic collaboration
- Web Of Science research areas
- Biochemistry & Molecular Biology
- Plant Sciences
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Source: InCites