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Experimental RNAi02:15

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RNA interference (RNAi) is a cellular mechanism that inhibits gene expression by suppressing its transcription or activating the RNA degradation process. The mechanism was discovered by Andrew Fire and Craig Mello in 1998 in plants. Today, it is observed in almost all eukaryotes, including protozoa, flies, nematodes, insects, parasites, and mammals. This precise cellular mechanism of gene silencing has been developed into a technique that provides an efficient way to identify and determine the...
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RNA interference (RNAi) is a process in which a small non-coding RNA molecule blocks the post-transcriptional expression of a gene by binding to its messenger RNA (mRNA) and preventing the protein from being translated.
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Subviral agents are infectious entities that resemble viruses but lack one or more viral components, such as a capsid or essential replication machinery. These agents include viroids, prions, and satellites, each possessing distinct structural and functional characteristics that influence their mode of infection and replication.Viroids are the simplest subviral agents, consisting of circular, single-stranded RNA molecules without a protein coat. They exclusively infect plants, relying entirely...
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RNA viruses are categorized into positive-strand, negative-strand, or double-stranded groups based on their genomic structure and replication mechanisms. This classification dictates how they exploit host cellular machinery for protein synthesis and replication. Some RNA viruses also utilize reverse transcription as part of their life cycle, further diversifying their replication strategies.Positive-Strand RNA VirusesPositive-strand RNA viruses have genomes that function directly as messenger...
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siRNA - Small Interfering RNAs02:30

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Related Experiment Video

Updated: Oct 1, 2025

Large-scale Production of Recombinant RNAs on a Circular Scaffold Using a Viroid-derived System in Escherichia coli
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RNAi tools for controlling viroid diseases.

Alberto Carbonell1

  • 1Instituto de Biología Molecular y Celular de Plantas (Consejo Superior de Investigaciones Científicas-Universitat Politècnica de València), Valencia 46022, Spain.

Virus Research
|March 9, 2022
PubMed
Summary
This summary is machine-generated.

Viroid diseases cause significant crop losses. RNA interference (RNAi) strategies, particularly artificial small RNAs (art-sRNAs), show promise for controlling these plant infections effectively.

Keywords:
Artificial microRNAArtificial small RNARNAiResistanceSyn-tasiRNAViroid

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Area of Science:

  • Plant Pathology
  • Molecular Biology
  • Biotechnology

Background:

  • Viroids are small, circular, single-stranded RNAs infecting plants, causing substantial economic damage.
  • Current control strategies include resistant cultivars, mild strain exclusion, ribonucleases, and RNA-based tools.

Purpose of the Study:

  • To review RNA interference (RNAi) strategies for controlling plant viroid infections.
  • To focus on artificial small RNA (art-sRNA) tools, including artificial microRNAs and synthetic trans-acting small interfering RNAs.

Main Methods:

  • Review of existing literature on RNAi applications against viroids.
  • Analysis of art-sRNA-based tools for specificity and efficacy.

Main Results:

  • RNAi, especially art-sRNA approaches, offers highly specific targeting of viroid sequences.
  • Artificial microRNAs and synthetic trans-acting small interfering RNAs are advanced RNAi tools.

Conclusions:

  • art-sRNA-based RNAi presents a promising avenue for developing novel strategies against viroid diseases.
  • Further research into art-sRNA applications could lead to improved crop protection and reduced economic losses.