Evidence map›Paper›PMID 19851448›Full record

ArticlePLoS genetics2009

Quantifying adaptive evolution in the Drosophila immune system.

Darren J Obbard, John J Welch, Kang-Wook Kim, Francis M Jiggins

Open access · goldAbstract read
In one paragraph

Article in PLoS genetics, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 142 papers.

0numbers the graph read from it
0cells of the map it votes in
142citing papers in PubMed
5.8field-weighted citation impact, top 3% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

142 citing papers in PubMed, 273 citations in OpenAlex.

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  12. Repeated global adaptation across plant species.Proceedings of the National Academy of Sciences of the United States of America · 2024
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  20. A novel transposable element-mediated mechanism causes antiviral resistance inProceedings of the National Academy of Sciences of the United States of America · 2022
    Article

82 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors at 3 institutions in 1 country.

Darren J ObbardInstitute of Evolutionary Biology, University of Edinburgh, Edinburgh, UK. darren.obbard@ed.ac.uk
John J Welch
Kang-Wook Kim
Francis M Jiggins
University of Edinburgh · GBUniversity of Cambridge · GBUniversity of Sheffield · GB

Funding

Biotechnology and Biological Sciences Research Council DO17750Medical Research Council G0900740Wellcome TrustWellcome Trust 085064/Z/08/Z
6 · The paper itself

Abstract

It is estimated that a large proportion of amino acid substitutions in Drosophila have been fixed by natural selection, and as organisms are faced with an ever-changing array of pathogens and parasites to which they must adapt, we have investigated the role of parasite-mediated selection as a likely cause. To quantify the effect, and to identify which genes and pathways are most likely to be involved in the host-parasite arms race, we have re-sequenced population samples of 136 immunity and 287 position-matched non-immunity genes in two species of Drosophila. Using these data, and a new extension of the McDonald-Kreitman approach, we estimate that natural selection fixes advantageous amino acid changes in immunity genes at nearly double the rate of other genes. We find the rate of adaptive evolution in immunity genes is also more variable than other genes, with a small subset of immune genes evolving under intense selection. These genes, which are likely to represent hotspots of host-parasite coevolution, tend to share similar functions or belong to the same pathways, such as the antiviral RNAi pathway and the IMD signalling pathway. These patterns appear to be general features of immune system evolution in both species, as rates of adaptive evolution are correlated between the D. melanogaster and D. simulans lineages. In summary, our data provide quantitative estimates of the elevated rate of adaptive evolution in immune system genes relative to the rest of the genome, and they suggest that adaptation to parasites is an important force driving molecular evolution.

Indexed as

Evolution, MolecularAdaptation, PhysiologicalAnimalsDrosophilaDrosophila ProteinsHost-Parasite InteractionsImmune SystemSelection, GeneticDrosophila Proteins

Identifiers

PMID19851448
PMCPMC2759075
OpenAlexW2146195472

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.