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Cited by 578Evolution and Genetic DynamicsGenomics and Phylogenetic StudiesGenetic diversity and population structure

The DOI matches its Crossref record; 95 of the 97 references it cites were found in a registry or an index.

Patterns of Positive Selection in Six Mammalian Genomes

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Kosiol, Carolin, Vinař, Tomáš, da Fonseca, Rute R., Hubisz, Melissa J., Bustamante, Carlos D., Nielsen, Rasmus, Siepel, Adam·2008·PLoS Genetics
DOI 10.1371/journal.pgen.1000144PMC PMC2483296
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Abstract

Genome-wide scans for positively selected genes (PSGs) in mammals have provided insight into the dynamics of genome evolution, the genetic basis of differences between species, and the functions of individual genes. However, previous scans have been limited in power and accuracy owing to small numbers of available genomes. Here we present the most comprehensive examination of mammalian PSGs to date, using the six high-coverage genome assemblies now available for eutherian mammals. The increased phylogenetic depth of this dataset results in substantially improved statistical power, and permits several new lineage- and clade-specific tests to be applied. Of approximately 16,500 human genes with high-confidence orthologs in at least two other species, 400 genes showed significant evidence of positive selection (FDR<0.05), according to a standard likelihood ratio test. An additional 144 genes showed evidence of positive selection on particular lineages or clades. As in previous studies, the identified PSGs were enriched for roles in defense/immunity, chemosensory perception, and reproduction, but enrichments were also evident for more specific functions, such as complement-mediated immunity and taste perception. Several pathways were strongly enriched for PSGs, suggesting possible co-evolution of interacting genes. A novel Bayesian analysis of the possible "selection histories" of each gene indicated that most PSGs have switched multiple times between positive selection and nonselection, suggesting that positive selection is often episodic. A detailed analysis of Affymetrix exon array data indicated that PSGs are expressed at significantly lower levels, and in a more tissue-specific manner, than non-PSGs. Genes that are specifically expressed in the spleen, testes, liver, and breast are significantly enriched for PSGs, but no evidence was found for an enrichment for PSGs among brain-specific genes. This study provides additional evidence for widespread positive selection in mammalian evolution and new genome-wide insights into the functional implications of positive selection.

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  1. JL Thorne, 2007, Population genetics without intraspecific data., Mol Biol Evol, 24, 1667, 10.1093/molbev/msm085 · DOI

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Metadata

Authors
Kosiol, C., Vinař, T., da Fonseca, R. R., Hubisz, M. J., Bustamante, C. D., Nielsen, R., & Siepel, A.
Affiliations
  • Cornell University (US)
  • University of Chicago (US)
  • University of Copenhagen (DK)
Corresponding author
Siepel, Adam
ORCID
Venue
PLoS Genetics
Publisher
Public Library of Science (PLoS)
Published
2008-08-01
Volume
4
Issue
8
Pages
e1000144
ISSN
  • 1553-7390 (ISSN-L)
  • 1553-7404
DOI
10.1371/journal.pgen.1000144
PMC
PMC2483296
OpenAlex
W2154770881
Cited by
576
References
97
Citations by year
2026: 5 · 2025: 15 · 2024: 23 · 2023: 17 · 2022: 19 · 2021: 58 · 2020: 27 · 2019: 27 · 2018: 24 · 2017: 31 · 2016: 25 · 2015: 32 · 2014: 51 · 2013: 55 · 2012: 41
FWCI
23.75
Type
journal article
Language
en
Open access
Licence
Locations
  • PLoS Genetics (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Cold Spring Harbor Laboratory Institutional Repository (Cold Spring Harbor Laboratory) (acceptedVersion)
  • eScholarship (California Digital Library) (submittedVersion, cc-by)
  • Knowledge@UChicago (University of Chicago) (submittedVersion, cc-by-nc-nd)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • eScholarship (California Digital Library) (submittedVersion)
  • Figshare (submittedVersion, cc-by)
  • Research at the University of Copenhagen (University of Copenhagen) (submittedVersion)
  • University of Chicago (cc-by)
Funders
  • National Science Foundation (0644111, 0516310)
  • Microsoft Research
  • National Human Genome Research Institute (R01HG003229)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Evolution and Genetic Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Phylogenetic Studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic diversity and population structure
Keywords
positive selection, mammalian evolution, placental mammals, orthologs, lineage-specific selection, immune-related genes, chemosensory perception, reproduction, taste perception, gene coevolution, episodic selection, gene expression, tissue-specific gene expression, spleen, testis, liver, breast
MeSH terms
Animals, Bayes Theorem, Pan troglodytes, Dogs, Humans, Macaca mulatta, Mammals, Phylogeny, Primates, Rodentia, Selection, Genetic, Gene Expression, Likelihood Functions, Sequence Alignment, Genome, Evolution, Molecular, Databases, Genetic, Mice, Rats

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