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Did viruses evolve as a distinct supergroup from common ancestors of cells?

Harish, Ajith LU ; Abroi, Aare; Gough, Julian and Kurland, Charles LU (2016) In Genome Biology and Evolution 8(8). p.2474-2481
Abstract

The evolutionary origins of viruses according tomarker gene phylogenies, as well as their relationships to the ancestors of host cells remains unclear. In a recent article Nasir and Caetano-Anollés reported that their genome-scale phylogenetic analyses based on genomic composition of protein structural-domains identify an ancient origin of the "viral supergroup" (Nasir et al. 2015. A phylogenomic data-driven exploration of viral origins and evolution. Sci Adv. 1(8):e1500527.). It suggests that viruses and host cells evolved independently from a universal common ancestor. Examination of their data and phylogeneticmethods indicates that systematic errors likely affected the results. Reanalysis of the data with additional tests shows that... (More)

The evolutionary origins of viruses according tomarker gene phylogenies, as well as their relationships to the ancestors of host cells remains unclear. In a recent article Nasir and Caetano-Anollés reported that their genome-scale phylogenetic analyses based on genomic composition of protein structural-domains identify an ancient origin of the "viral supergroup" (Nasir et al. 2015. A phylogenomic data-driven exploration of viral origins and evolution. Sci Adv. 1(8):e1500527.). It suggests that viruses and host cells evolved independently from a universal common ancestor. Examination of their data and phylogeneticmethods indicates that systematic errors likely affected the results. Reanalysis of the data with additional tests shows that small-genome attraction artifacts distort their phylogenomic analyses, particularly the location of the root of the phylogenetic tree of life that is central to their conclusions. These new results indicate that their suggestion of a distinct ancestry of the viral supergroup is not well supported by the evidence.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Homoplasy, Origins of viruses, Rooting artifact, Small genome attraction, Systematic error, Tree of life
in
Genome Biology and Evolution
volume
8
issue
8
pages
8 pages
publisher
Oxford University Press
external identifiers
  • scopus:85018333578
  • wos:000382523500018
ISSN
1759-6653
DOI
10.1093/gbe/evw175
language
English
LU publication?
yes
id
393b0561-b3e4-48f6-bb7f-92503089414a
date added to LUP
2017-05-22 13:43:13
date last changed
2017-10-22 05:30:56
@article{393b0561-b3e4-48f6-bb7f-92503089414a,
  abstract     = {<p>The evolutionary origins of viruses according tomarker gene phylogenies, as well as their relationships to the ancestors of host cells remains unclear. In a recent article Nasir and Caetano-Anollés reported that their genome-scale phylogenetic analyses based on genomic composition of protein structural-domains identify an ancient origin of the "viral supergroup" (Nasir et al. 2015. A phylogenomic data-driven exploration of viral origins and evolution. Sci Adv. 1(8):e1500527.). It suggests that viruses and host cells evolved independently from a universal common ancestor. Examination of their data and phylogeneticmethods indicates that systematic errors likely affected the results. Reanalysis of the data with additional tests shows that small-genome attraction artifacts distort their phylogenomic analyses, particularly the location of the root of the phylogenetic tree of life that is central to their conclusions. These new results indicate that their suggestion of a distinct ancestry of the viral supergroup is not well supported by the evidence.</p>},
  author       = {Harish, Ajith and Abroi, Aare and Gough, Julian and Kurland, Charles},
  issn         = {1759-6653},
  keyword      = {Homoplasy,Origins of viruses,Rooting artifact,Small genome attraction,Systematic error,Tree of life},
  language     = {eng},
  number       = {8},
  pages        = {2474--2481},
  publisher    = {Oxford University Press},
  series       = {Genome Biology and Evolution},
  title        = {Did viruses evolve as a distinct supergroup from common ancestors of cells?},
  url          = {http://dx.doi.org/10.1093/gbe/evw175},
  volume       = {8},
  year         = {2016},
}