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Convergent mechanisms of genome evolution of large and giant DNA viruses.
Res Microbiol. 2008 Jun; 159(5):325-31.RM

Abstract

We have taken advantage of the availability of the genome sequences of a collection of large and giant viruses infecting bacteria (T4 family) and eukaryotes (NCLDV group) to assess some of the evolutionary forces which might have shaped their genomes. Despite having apparently different ancestors, these two groups of viruses are affected by convergent evolutionary forces. Both types of virus probably originated from a simple and ancient viral ancestor with a small subset of 30-35 genes encoding replication and structural proteins. The genome size and diversity of the descendants most likely grew progressively by (i) lineage-specific gene duplications, (ii) lateral gene transfers of cellular genes and (iii) accretion of diverse families of mobile genetic elements. These results argue against the hypothesis that giant viruses derive from a regressive cell.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Filée J
Laboratoire Evolution, Génomes et Spéciation, CNRS UPR 9034, Avenue de la Terrasse, 91198 Gif sur Yvette Cedex, France. jonathan.filee@legs.cnrs-gif.fr
Chandler M
No affiliation info available

MeSH

AnimalsBacteriaBacteriophagesDNA VirusesEukaryotic CellsEvolution, MolecularGene Transfer, HorizontalGenome, ViralHumans

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

18572389

Citation

Filée, Jonathan, and Michael Chandler. "Convergent Mechanisms of Genome Evolution of Large and Giant DNA Viruses." Research in Microbiology, vol. 159, no. 5, 2008, pp. 325-31.
Filée J, Chandler M. Convergent mechanisms of genome evolution of large and giant DNA viruses. Res Microbiol. 2008;159(5):325-31.
Filée, J., & Chandler, M. (2008). Convergent mechanisms of genome evolution of large and giant DNA viruses. Research in Microbiology, 159(5), 325-31. https://doi.org/10.1016/j.resmic.2008.04.012
Filée J, Chandler M. Convergent Mechanisms of Genome Evolution of Large and Giant DNA Viruses. Res Microbiol. 2008;159(5):325-31. PubMed PMID: 18572389.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Convergent mechanisms of genome evolution of large and giant DNA viruses. AU - Filée,Jonathan, AU - Chandler,Michael, Y1 - 2008/05/10/ PY - 2008/3/3/received PY - 2008/4/17/revised PY - 2008/4/17/accepted PY - 2008/6/24/pubmed PY - 2008/10/17/medline PY - 2008/6/24/entrez SP - 325 EP - 31 JF - Research in microbiology JO - Res Microbiol VL - 159 IS - 5 N2 - We have taken advantage of the availability of the genome sequences of a collection of large and giant viruses infecting bacteria (T4 family) and eukaryotes (NCLDV group) to assess some of the evolutionary forces which might have shaped their genomes. Despite having apparently different ancestors, these two groups of viruses are affected by convergent evolutionary forces. Both types of virus probably originated from a simple and ancient viral ancestor with a small subset of 30-35 genes encoding replication and structural proteins. The genome size and diversity of the descendants most likely grew progressively by (i) lineage-specific gene duplications, (ii) lateral gene transfers of cellular genes and (iii) accretion of diverse families of mobile genetic elements. These results argue against the hypothesis that giant viruses derive from a regressive cell. SN - 0923-2508 UR - https://www.unboundmedicine.com/medline/citation/18572389/Convergent_mechanisms_of_genome_evolution_of_large_and_giant_DNA_viruses_ DB - PRIME DP - Unbound Medicine ER -