ArticleMolecular ecology2016
Unidirectional diploid-tetraploid introgression among British birch trees with shifting ranges shown by restriction site-associated markers.
Article in Molecular ecology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.
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32 citing papers in PubMed, 102 citations in OpenAlex.
- Article
- Hybridization and Polyploidy Shaped the Evolutionary History of a Complex of Cryptic Species in European Woodrushes (Luzula sect. Luzula).Systematic biology · 2026Article
- Introgression across ploidies contributes to genetic diversity in introduced urbanbioRxiv : the preprint server for biology · 2026Article
- Species integrity and ploidy stability despite extensive gene flow via introgressive hybridization: the case of Betula species in Iceland.BMC plant biology · 2025Article
- Overcoming Ploidy Barriers: The Role of Triploid Bridges in the Genetic Introgression of Cardamine amara.Molecular ecology · 2025Article
- Ploidy as a leaky reproductive barrier: mechanisms, rates and evolutionary significance of interploidy gene flow.Annals of botany · 2024Review
- Complex Polyploids: Origins, Genomic Composition, and Role of Introgressed Alleles.Systematic biology · 2024Article
- A cryptic syngameon withinEvolutionary applications · 2024Article
- Hybrids as mirrors of the past: genomic footprints reveal spatio-temporal dynamics and extinction risk of alpine extremophytes in the mountains of Central Asia.Frontiers in plant science · 2024Article
- Interploidy Introgression Shaped Adaptation during the Origin and Domestication History of Brassica napus.Molecular biology and evolution · 2023Article
- Population structure and genetic variation of fragmented mountain birch forests in Iceland.The Journal of heredity · 2023Article
- Article
- Distinct Taphrina strains from the phyllosphere of birch exhibiting a range of witches' broom disease symptoms.Environmental microbiology · 2022Article
- Global Patterns of Subgenome Evolution in Organelle-Targeted Genes of Six Allotetraploid Angiosperms.Molecular biology and evolution · 2022Article
- Molecular and morphological analyses clarify species delimitation in section Costatae and reveal Betula buggsii sp. nov. (sect. Costatae, Betulaceae) in China.Annals of botany · 2022Article
- Influence of Pliocene and Pleistocene climates on hybridization patterns between two closely related oak species in China.Annals of botany · 2022Article
- Range and niche expansion through multiple interspecific hybridization: a genotyping by sequencing analysis of Cherleria (Caryophyllaceae).BMC ecology and evolution · 2021Article
- Holocene chloroplast genetic variation of shrubs (Ecology and evolution · 2021Article
- Tracing species replacement in Iberian marbled newts.Ecology and evolution · 2021Article
- Article
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Authors and funding
7 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Hybridization may lead to introgression of genes among species. Introgression may be bidirectional or unidirectional, depending on factors such as the demography of the hybridizing species, or the nature of reproductive barriers between them. Previous microsatellite studies suggested bidirectional introgression between diploid Betula nana (dwarf birch) and tetraploid B. pubescens (downy birch) and also between B. pubescens and diploid B. pendula (silver birch) in Britain. Here, we analyse introgression among these species using 51 237 variants in restriction site-associated (RAD) markers in 194 individuals, called with allele dosages in the tetraploids. In contrast to the microsatellite study, we found unidirectional introgression into B. pubescens from both of the diploid species. This pattern fits better with the expected nature of the reproductive barrier between diploids and tetraploids. As in the microsatellite study, introgression into B. pubescens showed clear clines with increasing introgression from B. nana in the north and from B. pendula in the south. Unlike B. pendula alleles, introgression of B. nana alleles was found far from the current area of sympatry or allopatry between B. nana and B. pubescens. This pattern fits a shifting zone of hybridization due to Holocene reduction in the range of B. nana and expansion in the range of B. pubescens.
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