Cited by 67Evolution and Genetic DynamicsViral Infections and Immunology ResearchVirology and Viral Diseases

Mechanisms of genetic variation in polioviruses

Savolainen‐Kopra, Carita, Blomqvist, Soile·2010·Reviews in Medical Virology

Abstract

Polioviruses, as with all RNA viruses, are in a constant process of evolution driven by different mechanisms. With multiple mechanisms for genetic variability, they are successful conformists, adapting to changes in their habitat. The evolution of polioviruses may occur with generation of point mutations followed by genetic drift and selection. The mutation rate of polioviruses based on several studies is approximately 3 × 10−2 mutations/synonymous site/year in the gene encoding viral protein 1. Genetic variation in polioviruses may also be increased by sharing of genetic data of two different poliovirus lineages by means of homologous recombination. According to the current view, recombination is considered usually to occur by strand‐switching, but a non‐replicative model has also been described. In recombination, polioviruses may either gain a set of advantageous mutations selected and fixed in previous generations of the parental viruses or get rid of deleterious ones. The prerequisites and constraints of the evolution mechanisms will be discussed. Furthermore, consequences of poliovirus evolution will be reviewed in the light of observations made on currently circulating polioviruses. We will also describe how polioviruses strike back: as wild type polioviruses approach eradication, vaccine derived strains increase their occurrence and genetic variability. Copyright © 2010 John Wiley & Sons, Ltd.

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Crossref · 10.1002/rmv.663

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  • The capsid-encoding region of poliovirus, with a rate of fixation of total substitutions in the order of 10−2 substitutions/site/year, appears less genetically stable than the region encoding non-structural proteins.

    “However, the capsid-encoding region, with a rate of fixation of total substitutions in the order of 10−2 substitutions/site/year, appears less genetically stable than the region encoding non-structural proteins [17,18].”

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Authors
Savolainen‐Kopra, C., & Blomqvist, S.
Affiliations
Finnish Institute for Health and Welfare (FI)
Corresponding author
Savolainen‐Kopra, Carita
Venue
Reviews in Medical Virology
Publisher
Wiley
Published
2010-10-15
Volume
20
Issue
6
Pages
358-371
ISSN
  • 1052-9276 (ISSN-L)
  • 1099-1654
OpenAlex
W2041436148
Cited by
67
References
110
Citations by year
2025: 2 · 2024: 3 · 2023: 3 · 2022: 5 · 2021: 1 · 2020: 5 · 2019: 1 · 2018: 4 · 2017: 4 · 2016: 4 · 2015: 5 · 2014: 6 · 2013: 7 · 2012: 9
FWCI
0.81
Type
journal article
Language
en
Open access
closed
Locations
  • Reviews in Medical Virology (publishedVersion)
  • PubMed (publishedVersion)
  • STM:n Hallinnonalan avoin julkaisuarkisto (Julkari) (submittedVersion)
  • WOS
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Evolution and Genetic Dynamics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Viral Infections and Immunology Research
  • Health Sciences › Medicine › Epidemiology › Virology and Viral Diseases
Keywords
poliovirus, genetic variation, viral evolution, point mutations, genetic drift, natural selection, mutation rate, homologous recombination, vaccine-derived poliovirus, polio eradication, RNA viruses
MeSH terms
Adaptation, Biological, Biological Evolution, Humans, Mutation, Recombination, Genetic, Genetic Variation, Poliovirus, Evolution, Molecular

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