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Updated: Jun 17, 2026

Combining Analysis of DNA in a Crude Virion Extraction with the Analysis of RNA from Infected Leaves to Discover New Virus Genomes
08:56

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Published on: July 27, 2018

Emerging viruses in the genus Comovirus.

Karel Petrzik1, Igor Koloniuk

  • 1Department of Plant Virology, Institute of Plant Molecular Biology, Biology Centre of Academy of Sciences of the Czech Republic, vvi, Branisovská 31, 370 05 Ceske Budejovice, Czech Republic. petrzik@umbr.cas.cz

Virus Genes
|January 2, 2010
PubMed
Summary

Intraspecies variability in Comovirus capsid proteins was analyzed. A new method using both capsid proteins aids in distinguishing virus species and strains, proposing Turnip ringspot virus as a distinct species.

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Protocols for Investigating the Host-tissue Distribution, Transmission-mode, and Effect on the Host Fitness of a Densovirus in the Cotton Bollworm
11:12

Protocols for Investigating the Host-tissue Distribution, Transmission-mode, and Effect on the Host Fitness of a Densovirus in the Cotton Bollworm

Published on: April 12, 2017

Area of Science:

  • Virology
  • Molecular Biology
  • Bioinformatics

Background:

  • Comoviruses are plant-pathogenic viruses with significant economic impact.
  • Accurate species and strain demarcation is crucial for effective disease management and research.
  • Previous classification methods for Comoviruses present certain uncertainties.

Purpose of the Study:

  • To investigate the intraspecies variability of capsid proteins in five Comovirus species.
  • To develop a refined approach for species and strain demarcation within the Comovirus genus.
  • To evaluate the distinct taxonomic status of Turnip ringspot virus.

Main Methods:

  • Sequence analysis of capsid proteins from five Comovirus species.
  • Comparative analysis of conserved and variable regions within capsid protein sequences.
  • Phylogenetic analysis to assess relationships between Comovirus isolates.

Main Results:

  • Established significant intraspecies variability in Comovirus capsid proteins.
  • Demonstrated that including both capsid proteins in sequence analysis reduces ambiguity in species/strain demarcation.
  • Identified criteria supporting the discrimination of Turnip ringspot virus as a separate species.

Conclusions:

  • Capsid protein sequence analysis is a powerful tool for Comovirus classification.
  • The proposed method enhances the reliability of species and strain identification in the genus.
  • Turnip ringspot virus exhibits distinct characteristics warranting its classification as a separate species.