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Updated: Aug 17, 2025
09:25
Rapid, Seamless Generation of Recombinant Poxviruses using Host Range and Visual Selection
Published on: May 24, 2020
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Molecular Mechanisms of Poxvirus Evolution
Greg Brennan1, Ana M M Stoian1, Huibin Yu1
1Department of Medical Microbiology and Immunology, School of Medicine, University of California, Davis, Davis, California, USA.
Mbio
|December 14, 2022
Summary
Poxviruses evolve rapidly through genomic changes, not just slow DNA replication. Mechanisms like recombination and gene transfer drive adaptation and virulence, as seen in monkeypox virus.
Area of Science:
- Virology
- Evolutionary Biology
- Genomics
Background:
- Poxviruses are DNA viruses often perceived as slow-evolving due to proofreading polymerases.
- Recent monkeypox virus outbreaks highlight rapid poxvirus adaptation and transmission.
Purpose of the Study:
- To review the mechanisms driving poxvirus evolution.
- To explore how genomic changes influence host adaptation and virulence.
Main Methods:
- Review of existing literature on poxvirus evolution.
- Analysis of deep sequencing data revealing nucleotide variation.
- Examination of genomic architectural changes.
Main Results:
- Poxvirus genomes are highly adaptable, exhibiting rapid genotypic and phenotypic changes.
- Standing nucleotide variation in poxvirus populations is significant and previously underappreciated.
- Genomic alterations including recombination, gene duplication/loss, and horizontal gene transfer are key evolutionary drivers.
Conclusions:
- Poxvirus evolution is faster than previously assumed, driven by diverse genomic mechanisms.
- These evolutionary pathways are critical for poxvirus adaptation to new hosts and modulation of virulence.
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