Transition to Self-compatibility Associated With Dominant S-allele in a Diploid Siberian Progenitor of Allotetraploid Arabidopsis kamchatica Revealed by Arabidopsis lyrata Genomes

Kolesnikova, Uliana K.; Scott, Alison Dawn; Van de Velde, Jozefien D.; Burns, Robin; Tikhomirov, Nikita P.; Pfordt, Ursula; Clarke, Andrew C.; Yant, Levi; Seregin, Alexey P.; Vekemans, Xavier; Laurent, Stefan; Novikova, Polina Yu

Abstract

A transition to selfing can be beneficial when mating partners are scarce, for example, due to ploidy changes or at species range edges. Here, we explain how self-compatibility evolved in diploid Siberian Arabidopsis lyrata, and how it contributed to the establishment of allotetraploid Arabidopsis kamchatica. First, we provide chromosome-level genome assemblies for two self-fertilizing diploid A. lyrata accessions, one from North America and one from Siberia, including a fully assembled S-locus for the latter. We then propose a sequence of events leading to the loss of self-incompatibility in Siberian A. lyrata, date this independent transition to ∼90 Kya, and infer evolutionary relationships between Siberian and North American A. lyrata, showing an independent transition to selfing in Siberia. Finally, we provide evidence that this selfing Siberian A. lyrata lineage contributed to the formation of the allotetraploid A. kamchatica and propose that the selfing of the latter is mediated by the loss-of-function mutation in a dominant S-allele inherited from A. lyrata.

Citation

Kolesnikova, U. K., Scott, A. D., Van de Velde, J. D., Burns, R., Tikhomirov, N. P., Pfordt, U., Clarke, A. C., Yant, L., Seregin, A. P., Vekemans, X., Laurent, S., & Novikova, P. Y. (2023). Transition to Self-compatibility Associated With Dominant S-allele in a Diploid Siberian Progenitor of Allotetraploid Arabidopsis kamchatica Revealed by Arabidopsis lyrata Genomes. Molecular Biology and Evolution, 40(7), Article msad122. https://doi.org/10.1093/molbev/msad122

• Journal Article Type: Article
• Acceptance Date: Jun 2, 2023
• Online Publication Date: Jul 11, 2023
• Publication Date: 2023-07
• Deposit Date: Nov 20, 2024
• Publicly Available Date: Nov 21, 2024
• Journal: Molecular Biology and Evolution
• Print ISSN: 0737-4038
• Electronic ISSN: 1537-1719
• Publisher: Oxford University Press
• Peer Reviewed: Peer Reviewed
• Volume: 40
• Issue: 7
• Article Number: msad122
• DOI: https://doi.org/10.1093/molbev/msad122
• Public URL: https://nottingham-repository.worktribe.com/output/23221214
• Publisher URL: https://academic.oup.com/mbe/article/40/7/msad122/7222474?login=false