Evidence map›Paper›PMID 35388432›Full record

ArticleMolecular biology and evolution2022

Different Genes are Recruited During Convergent Evolution of Pregnancy and the Placenta.

Charles S P Foster, James U Van Dyke, Michael B Thompson, Nicholas M A Smith, Colin A Simpfendorfer, Christopher R Murphy, Camilla M Whittington

Abstract read
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Article in Molecular biology and evolution, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
–field-weighted citation impact
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

17 citing papers in PubMed.

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  10. Trophoblast Fusion in Hypertensive Disorders of Pregnancy and Preeclampsia.International journal of molecular sciences · 2025
    Review
  11. Article
  12. Article
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  16. Adaptive structural and functional evolution of the placenta protects fetal growth in high-elevation deer mice.Proceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  17. Article
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

7 authors.

Charles S P FosterSchool of Life and Environmental Sciences, University of Sydney, Sydney, NSW, Australia.ORCID 0000-0002-6700-3746
James U Van DykeSchool of Molecular Sciences, La Trobe University, Albury-Wodonga Campus, VIC, Australia.
Michael B ThompsonSchool of Life and Environmental Sciences, University of Sydney, Sydney, NSW, Australia.
Nicholas M A SmithSchool of Biological Sciences, University of Queensland, Brisbane, QLD, Australia.
Colin A SimpfendorferCollege of Science and Engineering, James Cook University, Townsville, Queensland, Australia.
Christopher R MurphySchool of Medical Sciences and The Bosch Institute, University of Sydney, Sydney, NSW, Australia.
Camilla M WhittingtonSchool of Life and Environmental Sciences, University of Sydney, Sydney, NSW, Australia.ORCID 0000-0001-5765-9699

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The repeated evolution of the same traits in distantly related groups (convergent evolution) raises a key question in evolutionary biology: do the same genes underpin convergent phenotypes? Here, we explore one such trait, viviparity (live birth), which, qualitative studies suggest, may indeed have evolved via genetic convergence. There are >150 independent origins of live birth in vertebrates, providing a uniquely powerful system to test the mechanisms underpinning convergence in morphology, physiology, and/or gene recruitment during pregnancy. We compared transcriptomic data from eight vertebrates (lizards, mammals, sharks) that gestate embryos within the uterus. Since many previous studies detected qualitative similarities in gene use during independent origins of pregnancy, we expected to find significant overlap in gene use in viviparous taxa. However, we found no more overlap in uterine gene expression associated with viviparity than we would expect by chance alone. Each viviparous lineage exhibits the same core set of uterine physiological functions. Yet, contrary to prevailing assumptions about this trait, we find that none of the same genes are differentially expressed in all viviparous lineages, or even in all viviparous amniote lineages. Therefore, across distantly related vertebrates, different genes have been recruited to support the morphological and physiological changes required for successful pregnancy. We conclude that redundancies in gene function have enabled the repeated evolution of viviparity through recruitment of different genes from genomic "toolboxes", which are uniquely constrained by the ancestries of each lineage.

Indexed as

LizardsViviparity, NonmammalianAnimalsBiological EvolutionFemaleGenomicsMammalsPlacentaPregnancycomplex traitsplacentotrophyviviparity

Identifiers

PMID35388432
PMCPMC9048886

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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.