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Role of recombination in evolution of enteroviruses

Role of recombination in evolution of enteroviruses Enteroviruses, members of the Picornaviridae family, comprise a large (over 70 serotypes) group of viruses that are ubiquitous in nature, infect different species and cause a wide range of diseases. Human enteroviruses were recently classified into five species, human enterovirus A–D and poliovirus. Recombination has long been known to be an important property of poliovirus genetics. Recently, several publications demonstrated that recombination is extremely frequent also in non‐polio enteroviruses, and allows independent evolution of enterovirus genome fragments even on a microevolutionary scale. Prototype enterovirus strains were shown to have complex phylogenetic relations, and almost all modern enterovirus isolates turned out to be recombinants compared with the prototype strains. Recombination takes place strictly between members of the same species, and usually spares the capsid‐encoding genome region. Therefore, it can be concluded that the enterovirus species exist as a worldwide reservoir of genetic material comprising a limited quantity of capsid gene sets defining a finite number of serotypes and a range of non‐structural genes that recombine frequently to produce new virus variants. This new model of enterovirus genetics helps to explain the failure of previous attempts to connect serotype and disease profile in non‐polio enteroviruses, and seriously questions existing typing approaches that are based solely on the capsid‐encoding genome region. It remains to be determined what role recombination plays in the emergence of new enterovirus variants and in the macroevolution of animal enteroviruses and viruses of the picorna‐like supergroup. Copyright © 2004 John Wiley & Sons, Ltd. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Reviews in Medical Virology Wiley

Role of recombination in evolution of enteroviruses

Lukashev, Alexander N.
Reviews in Medical Virology , Volume 15 (3) – May 1, 2005
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References (93)

Publisher
Wiley
Copyright
Copyright © 2004 John Wiley & Sons, Ltd.
ISSN
1052-9276
eISSN
1099-1654
DOI
10.1002/rmv.457
pmid
15578739
Publisher site
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Abstract

Enteroviruses, members of the Picornaviridae family, comprise a large (over 70 serotypes) group of viruses that are ubiquitous in nature, infect different species and cause a wide range of diseases. Human enteroviruses were recently classified into five species, human enterovirus A–D and poliovirus. Recombination has long been known to be an important property of poliovirus genetics. Recently, several publications demonstrated that recombination is extremely frequent also in non‐polio enteroviruses, and allows independent evolution of enterovirus genome fragments even on a microevolutionary scale. Prototype enterovirus strains were shown to have complex phylogenetic relations, and almost all modern enterovirus isolates turned out to be recombinants compared with the prototype strains. Recombination takes place strictly between members of the same species, and usually spares the capsid‐encoding genome region. Therefore, it can be concluded that the enterovirus species exist as a worldwide reservoir of genetic material comprising a limited quantity of capsid gene sets defining a finite number of serotypes and a range of non‐structural genes that recombine frequently to produce new virus variants. This new model of enterovirus genetics helps to explain the failure of previous attempts to connect serotype and disease profile in non‐polio enteroviruses, and seriously questions existing typing approaches that are based solely on the capsid‐encoding genome region. It remains to be determined what role recombination plays in the emergence of new enterovirus variants and in the macroevolution of animal enteroviruses and viruses of the picorna‐like supergroup. Copyright © 2004 John Wiley & Sons, Ltd.

Journal

Reviews in Medical Virology – Wiley

Published: May 1, 2005

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