Cited by 33Bacterial Genetics and BiotechnologyEvolution and Genetic DynamicsBacterial biofilms and quorum sensing

Kin discrimination promotes horizontal gene transfer between unrelated strains in Bacillus subtilis

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Stefanic, Polonca, Belcijan, Katarina, Kraigher, Barbara, Kostanjšek, Rok, Nesme, Joseph, Madsen, Jonas Stenløkke, Kovac, Jasna, Sørensen, Søren Johannes +2 more·2021·Nature Communications

Abstract

Bacillus subtilis is a soil bacterium that is competent for natural transformation. Genetically distinct B. subtilis swarms form a boundary upon encounter, resulting in killing of one of the strains. This process is mediated by a fast-evolving kin discrimination (KD) system consisting of cellular attack and defence mechanisms. Here, we show that these swarm antagonisms promote transformation-mediated horizontal gene transfer between strains of low relatedness. Gene transfer between interacting non-kin strains is largely unidirectional, from killed cells of the donor strain to surviving cells of the recipient strain. It is associated with activation of a stress response mediated by sigma factor SigW in the donor cells, and induction of competence in the recipient strain. More closely related strains, which in theory would experience more efficient recombination due to increased sequence homology, do not upregulate transformation upon encounter. This result indicates that social interactions can override mechanistic barriers to horizontal gene transfer. We hypothesize that KD-mediated competence in response to the encounter of distinct neighbouring strains could maximize the probability of efficient incorporation of novel alleles and genes that have proved to function in a genomically and ecologically similar context.

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Authors
Stefanic, P., Belcijan, K., Kraigher, B., Kostanjšek, R., Nesme, J., Madsen, J. S., Kovac, J., Sørensen, S. J., Vos, M., & Mandic-Mulec, I.
Affiliations
  • University of Ljubljana (SI)
  • University of Copenhagen (DK)
  • University of Exeter (GB)
Venue
Nature Communications
Published
2021-06-08
Volume
12
Issue
1
Pages
3457-3457
ISSN
2041-1723 (ISSN-L)
OpenAlex
W3169533949
Cited by
33
References
51
Citations by year
2026: 2 · 2025: 6 · 2024: 5 · 2023: 6 · 2022: 8 · 2021: 6
FWCI
3.53
Type
journal article
Language
en
Open access
Locations
  • Nature Communications (publishedVersion, cc-by)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by-nd)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Research at the University of Copenhagen (University of Copenhagen) (publishedVersion, cc-by)
  • Repository of the University of Ljubljana (University of Ljubljana) (submittedVersion, cc-by)
  • RePEc: Research Papers in Economics (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Figshare (submittedVersion, cc-by)
  • Open Research Exeter (University of Exeter) (submittedVersion, cc-by)
Funders
Javna Agencija za Raziskovalno Dejavnost RS (US/18-19-091, J4-8228, J4-9302, J4-7637)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Bacterial Genetics and Biotechnology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Evolution and Genetic Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Bacterial biofilms and quorum sensing
Keywords
kin discrimination, horizontal gene transfer, Bacillus subtilis, natural transformation, competence, stress response, social interaction, strain relatedness
MeSH terms
Adaptation, Physiological, Bacillus subtilis, Cell Membrane, DNA, Bacterial, Mutation, Nucleotides, Recombination, Genetic, Stress, Physiological, Transformation, Genetic, Up-Regulation, Genome, Bacterial, Gene Transfer, Horizontal

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