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Related Concept Videos

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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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Related Experiment Video

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Large-scale Production of Recombinant RNAs on a Circular Scaffold Using a Viroid-derived System in Escherichia coli
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Published on: November 30, 2018

Viroids.

Efthimia Mina Tsagris1, Angel Emilio Martínez de Alba, Mariyana Gozmanova

  • 1Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology, PO Box 1385, 71110 Heraklion, Greece. tsagris@imbb.forth.gr

Cellular Microbiology
|September 4, 2008
PubMed
Summary
This summary is machine-generated.

Viroids are small RNA pathogens that infect plants, utilizing host machinery for replication and evasion of defenses. Recent research explores their interactions with host proteins and RNA-mediated gene silencing, impacting pathogenicity.

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Area of Science:

  • Plant pathology
  • Molecular biology
  • Virology

Background:

  • Viroids are non-protein-coding circular RNA pathogens impacting crop plants.
  • They possess RNA structural elements that interact with host factors for replication and transport.
  • Viroids share similarities with Hepatitis Delta Virus (HDV) in animals and retroviroids in plants.

Purpose of the Study:

  • To review recent advancements in understanding viroid biology.
  • To discuss the role of viroid-binding host proteins.
  • To explore viroid interactions with RNA-mediated gene silencing and its connection to pathogenicity.

Main Methods:

  • Literature review of recent studies on viroid-host interactions.
  • Analysis of data on viroid-binding proteins.
  • Examination of research on RNA-mediated gene silencing in viroid-infected plants.

Main Results:

  • Viroids exploit host machinery via specific RNA-host factor interactions.
  • Viroid interactions with host proteins are being identified.
  • Viroid interaction with RNA silencing pathways is linked to replication and pathogenicity.

Conclusions:

  • Understanding viroid-host interactions is crucial for managing plant diseases.
  • Viroid manipulation of host defense mechanisms, particularly RNA silencing, is key to their biology.
  • Further research into viroid-binding proteins and RNA silencing mechanisms will illuminate viroid pathogenicity.