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Suppression of RNA Silencing by a Plant DNA Virus Satellite Requires a Host Calmodulin-Like Protein to Repress RDR6 Expression
TLDR
Genetic evidence showed that Nbrgs-CaM mediated the βC1 functions in silencing suppression and symptom modulation, and was required for efficient virus infection, and highlight an essential role for RDR6 in RNA silencing defense response against geminivirus infection.
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V2 of tomato yellow leaf curl virus can suppress methylation-mediated transcriptional gene silencing in plants.
TLDR
It is shown that the V2 protein of TYLCV can suppress TGS of a transcriptionally silenced green fluorescent protein (GFP) transgene in Nicotiana benthamiana line 16-TGS, and its V2protein is responsible for the TGS suppression activity.
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Beclin1 restricts RNA virus infection in plants through suppression and degradation of the viral polymerase
TLDR
It is reported that turnip mosaic virus infection activates autophagy in plants and that Beclin1 (ATG6), a core component of autophagic component, binds the viral polymerase and inhibits virus replication.
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A calmodulin-like protein suppresses RNA silencing and promotes geminivirus infection by degrading SGS3 via the autophagy pathway in Nicotiana benthamiana
TLDR
Data suggest that NbCaM acts as a suppressor of RNA silencing by degrading NbSGS3 through the autophagy pathway.
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A versatile system for functional analysis of genes and microRNAs in cotton.
TLDR
A cotton leaf crumple virus-based vector and its application in gene function analysis through virus-induced gene silencing (VIGS) and overexpression of microRNAs (miRNAs), small tandem target mimic (STTM) and artificial miRNA (amiRNA) in cotton via an Agrobacterium-mediated infiltration approach is reported.
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Artificial TALE as a Convenient Protein Platform for Engineering Broad-Spectrum Resistance to Begomoviruses
TLDR
It is shown that artificial TALEs, which were assembled based on conserved sequence motifs within begomovirus genomes, could confer partial resistance in transgenic Nicotiana benthamiana to all threeBegomoviruses tested and the resistance was maintained even in the presence of their betasatellite.
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RNA decay is an antiviral defense in plants that is counteracted by viral RNA silencing suppressors
TLDR
It is shown that overexpression of key cytoplasmic 5’–3’ RNA decay pathway gene-encoded proteins (5’RDGs) in Nicotiana benthamiana fails to suppress sense transgene-induced post-transcriptional gene silencing, and VSRs not only counteract RNA silencing but also subvert RNA decay to promote viral infection.
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NbEXPA1, an &agr;‐expansin, is plasmodesmata‐specific and a novel host factor for potyviral infection
TLDR
A quantitative proteomic study on the PD-enriched fraction from Nicotiana benthamiana leaves in response to infection by Turnip mosaic virus suggests that NbEXPA1 is a host factor for potyviral infection.
View on Wolters Kluwer
Regulation of Nicotine Biosynthesis by an Endogenous Target Mimicry of MicroRNA in Tobacco1[OPEN]
TLDR
It is demonstrated that enhanced nicotine biosynthesis in the topping-treated tobacco plants is achieved by nta-eTMX27-mediated inhibition of the expression and functions of nta -miRX27, the first report about regulation of secondary metabolite biosynthesis by an miRNA-e TM regulatory module in plants.
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The AC5 protein encoded by Mungbean yellow mosaic India virus is a pathogenicity determinant that suppresses RNA silencing-based antiviral defenses.
TLDR
It is demonstrated that MYMIV AC5 is a pathogenicity determinant and a potent RNA silencing suppressor that employs novel mechanisms to suppress antiviral defenses, and suggested that the AC5 function may be conserved among many begomoviruses.
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