PreprintCited by 78Chromosomal and Genetic VariationsEvolution and Genetic DynamicsGenomics and Phylogenetic Studies

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Virus-like transposons cross the species barrier and drive the evolution of genetic incompatibilities

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Preprint — published as 10.1126/science.ade0705 · Paper page

Abstract

Horizontal gene transfer—the movement of genetic material between different species—has been reported across all major eukaryotic lineages, including vertebrates. However, the underlying mechanisms of transfer and their impact on genome evolution are still poorly understood. While studying the evolutionary origin of a selfish element in the nematode C. briggsae , we discovered that Mavericks , ancient viral-like transposons related to giant viruses and virophages, are one of the long-sought vectors of horizontal gene transfer. We found that Mavericks gained a novel herpesvirus-like fusogen in nematodes, leading to the widespread exchange of cargo genes between extremely divergent species, bypassing sexual and genetic barriers spanning hundreds of millions of years. Our results show how the union between viruses and transposons—nature’s melting pot—causes horizontal gene transfer and ultimately genetic incompatibilities in natural populations.

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Metadata

Authors
Widen, S. A., Bes, I. C., Koreshova, A., Krogull, D., & Burga, A.
Affiliations
Institute of Molecular Biotechnology (AT)
Corresponding author
  • Widen, Sonya A.
  • Bes, Israel Campo
  • Burga, Alejandro
Venue
Science
Publisher
openRxiv
Published
2022-07-13
Volume
380
Issue
6652
Pages
eade0705-eade0705
ISSN
0036-8075 (ISSN-L)
OpenAlex
W4382520369
Cited by
78
References
1
Citations by year
2026: 16 · 2025: 30 · 2024: 25 · 2023: 7
FWCI
12.24
Type
journal article
Language
en
Open access
Licence
cc-by-nc-nd
Locations
  • Science (publishedVersion)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
Funders
  • European Commission (2014‐2020, HORIZON2020)
  • Österreichischen Akademie der Wissenschaften
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Chromosomal and Genetic Variations
  • 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
Keywords
horizontal gene transfer, genetic incompatibility, Caenorhabditis briggsae, nematodes, giant viruses, virophages, selfish genetic elements, genome evolution
MeSH terms
Animals, Caenorhabditis, DNA Transposable Elements, Biological Evolution, Genetic Vectors, Viruses, Gene Transfer, Horizontal

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