Please use this identifier to cite or link to this item: https://doi.org/10.1105/tpc.018986
DC FieldValue
dc.titleViral virulence protein suppresses RNA silencing-mediated defense but upregulates the role of microRNA in host gene expression
dc.contributor.authorChen, J.
dc.contributor.authorLi, W.X.
dc.contributor.authorXie, D.
dc.contributor.authorPeng, J.R.
dc.contributor.authorDing, S.W.
dc.date.accessioned2014-12-12T07:35:28Z
dc.date.available2014-12-12T07:35:28Z
dc.date.issued2004-05
dc.identifier.citationChen, J., Li, W.X., Xie, D., Peng, J.R., Ding, S.W. (2004-05). Viral virulence protein suppresses RNA silencing-mediated defense but upregulates the role of microRNA in host gene expression. Plant Cell 16 (5) : 1302-1313. ScholarBank@NUS Repository. https://doi.org/10.1105/tpc.018986
dc.identifier.issn10404651
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/116026
dc.description.abstractSmall interfering RNAs (siRNAs) and microRNAs (miRNAs) are processed by the ribonuclease Dicer from distinct precursors, double-stranded RNA (dsRNA) and hairpin RNAs, respectively, although either may guide RNA silencing via a similar complex. The siRNA pathway is antiviral, whereas an emerging role for miRNAs is in the control of development. Here, we describe a virulence factor encoded by turnip yellow mosaic virus, p69, which suppresses the siRNA pathway but promotes the miRNA pathway in Arabidopsis thaliana. p69 suppression of the siRNA pathway is upstream of dsRNA and is as effective as genetic mutations in A. thaliana genes involved in dsRNA production. Possibly as a consequence of p69 suppression, p69-expressing plants contained elevated levels of a Dicer mRNA and of miRNAs as well as a correspondingly enhanced miRNA-guided cleavage of two host mRNAs. Because p69-expressing plants exhibited disease-like symptoms in the absence of viral infection, our findings suggest a novel mechanism for viral virulence by promoting the miRNA-guided inhibition of host gene expression.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1105/tpc.018986
dc.sourceScopus
dc.typeArticle
dc.contributor.departmentINSTITUTE OF MOLECULAR AGROBIOLOGY
dc.contributor.departmentBIOLOGICAL SCIENCES
dc.description.doi10.1105/tpc.018986
dc.description.sourcetitlePlant Cell
dc.description.volume16
dc.description.issue5
dc.description.page1302-1313
dc.description.codenPLCEE
dc.identifier.isiut000221461400018
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