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The Daily Insight

How does virus induced gene silencing work?

Author

Andrew Mclaughlin

Updated on April 30, 2026

Virus-induced gene silencing (VIGS) is a technology that exploits an RNA-mediated antiviral defense mechanism. In plants infected with unmodified viruses the mechanism is specifically targeted against the viral genome.

What is the full form of Vigs?

Human immunodeficiency virus infection and acquired immune deficiency syndrome
HIV/AIDS/Full name

What is RNA silencing mechanism and significance?

RNA silencing or RNA interference refers to a family of gene silencing effects by which gene expression is negatively regulated by non-coding RNAs such as microRNAs. RNA silencing may also be defined as sequence-specific regulation of gene expression triggered by double-stranded RNA (dsRNA).

Which RNA can induce gene silencing?

Explanation: Apart from siRNA, miRNA and piRNA causes gene silencing. The miRNAs or microRNAs are naturally occurring RNAs that direct the repression of genes, but mostly in plants and worms.

What are Vigs for?

Virus-induced gene silencing (VIGS) is an effective tool for gene function analysis in plants. Over the last decade, VIGS has been successfully used as both a forward and reverse genetics technique for gene function analysis in various model plants, as well as crop plants.

What is the viral induced gene silencing technique that uses Geminivirus?

VIGS is induced by infecting a plant with a plant virus that has had its genome modified to include a sequence from the host gene to be silenced. DNAβ and DNA1 are satellite and single-stranded DNA molecules associated with begomoviruses (family Geminiviridae). We converted DNAβ and DNA1 into gene-silencing vectors.

What does Unisa stand for in Afrikaans?

UNIversiteit van Suid-Afrika (University of South Africa)

Is Vigs a Scrabble word?

Vigs is valid Scrabble Word.

What is RNA silencing mechanism?

RNA silencing, also known as RNA interference, is a conserved biological response to double-stranded RNA that regulates gene expression. The response is mediated by small interfering RNAs (siRNAs), which guide the sequence-specific degradation of cognate messenger RNAs (mRNAs).

What is RNA silencing what is the use of the strategy?

RNA silencing is an evolutionarily conserved sequence-specific gene-inactivation system that also functions as an antiviral mechanism in higher plants and insects. To overcome antiviral RNA silencing, viruses express silencing-suppressor proteins which can counteract the host silencing-based antiviral process.

What causes gene silencing?

Mechanisms responsible for repression of genes involve changes in levels of DNA methylation and alterations in covalent modifications of histone proteins, which lead to chromatin compaction, making genes inaccessible to the transcription machinery.

How is RNA used for gene silencing?

Ribozymes are catalytic RNA molecules used to inhibit gene expression. These molecules work by cleaving mRNA molecules, essentially silencing the genes that produced them. The general catalytic mechanism used by ribozymes is similar to the mechanism used by protein ribonucleases.

What is VIGs technology and how does it work?

Virus-induced gene silencing (VIGS) is a technology that exploits an RNA-mediated antiviral defense mechanism. In plants infected with unmodified viruses the mechanism is specifically targeted against the viral genome.

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What is the design of a VIGs construct?

VIGS Constructs Design As gene silencing is homology -based, the VIGS constructs should be carefully designed to maximise silencing of target gene(s) and minimize potential off-target gene silencing.

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