ArticleProceedings of the National Academy of Sciences of the United States of America2017
Endosperm-based hybridization barriers explain the pattern of gene flow between Arabidopsis lyrata and Arabidopsis arenosa in Central Europe.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 52 papers.
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52 citing papers in PubMed.
- Review
- Samplify: a versatile tool for image-based segmentation and annotation of seed abortion phenotypes.The New phytologist · 2026Article
- Introgression and parental conflict shape repeated occurrences of postzygotic isolation in Mimulus.Current biology : CB · 2026Article
- Introgression and Parental Conflict Shape Repeated Occurrences of Postzygotic Isolation.bioRxiv : the preprint server for biology · 2025Article
- Multiple Autopolyploid Arabidopsis lyrata Populations Stabilized by Long-Range Adaptive Introgression Across Eurasia.Molecular biology and evolution · 2025Article
- Bridging micro and macroevolution: insights from chromosomal dynamics in plants.Frontiers in plant science · 2025Review
- Polyploids broadly generate novel haplotypes from trans-specific variation in Arabidopsis arenosa and Arabidopsis lyrata.PLoS genetics · 2024Article
- Machine Learning Inference of Gene Regulatory Networks in DevelopingPlants (Basel, Switzerland) · 2024Article
- United by conflict: Convergent signatures of parental conflict in angiosperms and placental mammals.The Journal of heredity · 2024Review
- Parental dialectic: Epigenetic conversations in endosperm.Current opinion in plant biology · 2024Review
- Complex Polyploids: Origins, Genomic Composition, and Role of Introgressed Alleles.Systematic biology · 2024Article
- Interspecific transfer of genetic information through polyploid bridges.Proceedings of the National Academy of Sciences of the United States of America · 2024Article
- Molecular basis and evolutionary drivers of endosperm-based hybridization barriers.Plant physiology · 2024Review
- Genetic Cause of Hybrid Lethality Observed in Reciprocal Interspecific Crosses betweenInternational journal of molecular sciences · 2024Article
- Mechanisms of Intrinsic Postzygotic Isolation: From Traditional Genic and Chromosomal Views to Genomic and Epigenetic Perspectives.Cold Spring Harbor perspectives in biology · 2023Review
- Strong postmating reproductive isolation in Mimulus section Eunanus.Journal of evolutionary biology · 2023Article
- The novel expression of clonality following whole-genome multiplication compensates for reduced fertility in natural autopolyploids.Proceedings. Biological sciences · 2023Article
- Genome sequence analysis provides insights into the mode of 2n egg formation in Solanum malmeanum.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2023Article
- New insights into polyploid evolution and dynamic nature of Ludwigia section Isnardia (Onagraceae).Botanical studies · 2023Article
- Mapping and validation of quantitative trait loci associated with dorsal aleurone thickness in rice (Oryza sativa).TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2023Article
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11 authors.
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Abstract
Based on the biological species concept, two species are considered distinct if reproductive barriers prevent gene flow between them. In Central Europe, the diploid species Arabidopsis lyrata and Arabidopsis arenosa are genetically isolated, thus fitting this concept as "good species." Nonetheless, interspecific gene flow involving their tetraploid forms has been described. The reasons for this ploidy-dependent reproductive isolation remain unknown. Here, we show that hybridization between diploid A. lyrata and A. arenosa causes mainly inviable seed formation, revealing a strong postzygotic reproductive barrier separating these two species. Although viability of hybrid seeds was impaired in both directions of hybridization, the cause for seed arrest differed. Hybridization of A. lyrata seed parents with A. arenosa pollen donors resulted in failure of endosperm cellularization, whereas the endosperm of reciprocal hybrids cellularized precociously. Endosperm cellularization failure in both hybridization directions is likely causal for the embryo arrest. Importantly, natural tetraploid A. lyrata was able to form viable hybrid seeds with diploid and tetraploid A. arenosa, associated with the reestablishment of normal endosperm cellularization. Conversely, the defects of hybrid seeds between tetraploid A. arenosa and diploid A. lyrata were aggravated. According to these results, we hypothesize that a tetraploidization event in A. lyrata allowed the production of viable hybrid seeds with A. arenosa, enabling gene flow between the two species.
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