ArticleAnnals of botany2014
Multiple hybridization events in Cardamine (Brassicaceae) during the last 150 years: revisiting a textbook example of neoallopolyploidy.
Article in Annals of botany, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.
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15 citing papers in PubMed, 35 citations in OpenAlex.
- Nucleolar dominance arises in Spartina homoploid hybrids and persists after allopolyploidization.The Plant journal : for cell and molecular biology · 2026Article
- Multiple hybrid zones involving four Cardamine species and their triploid progeny: watching allopolyploid speciation in action?The New phytologist · 2025Article
- Natural neopolyploids: a stimulus for novel research.The New phytologist · 2025Review
- Uniparental silencing of 5S rRNA genes in plant allopolyploids - insights from Cardamine (Brassicaceae).The Plant journal : for cell and molecular biology · 2024Article
- Clonal growth characteristics and diversity patterns of different Clintonia udensis (Liliaceae) diploid and tetraploid cytotypes in the Hualongshan Mountains.Scientific reports · 2024Article
- Morphological, ecological and geographic differences between diploids and tetraploids ofAoB PLANTS · 2022Article
- Speciation by triparental hybridization in genus Sorbus (Rosaceae).Biologia futura · 2020Article
- Trait-dependent resemblance of the flowering phenology and floral morphology of the allopolyploid Cardamine flexuosa to those of the parental diploids in natural habitats.Journal of plant research · 2020Article
- So Closely Related and Yet So Different: Strong Contrasts Between the Evolutionary Histories of Species of theFrontiers in plant science · 2020Article
- A Recently Formed TriploidFrontiers in genetics · 2020Article
- Intricate Distribution Patterns of Six Cytotypes ofFrontiers in plant science · 2020Article
- The story of promiscuous crucifers: origin and genome evolution of an invasive species, Cardamine occulta (Brassicaceae), and its relatives.Annals of botany · 2019Article
- Study on Hybrid Characteristics of Medicinally Used CultivatedMolecules (Basel, Switzerland) · 2018Article
- Allopolyploid Origin of Chenopodium album s. str. (Chenopodiaceae): A Molecular and Cytogenetic Insight.PloS one · 2016Article
- Female sterility associated with increased clonal propagation suggests a unique combination of androdioecy and asexual reproduction in populations of Cardamine amara (Brassicaceae).Annals of botany · 2015Article
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7 authors at 5 institutions in 3 countries.
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No grant is acknowledged in the PubMed record.
Abstract
BACKGROUND AND
aimsRecently formed allopolyploid species represent excellent subjects for exploring early stages of polyploid evolution. The hexaploid Cardamine schulzii was regarded as one of the few nascent allopolyploid species formed within the past ∼150 years that presumably arose by autopolyploidization of a triploid hybrid, C. × insueta; however, the most recent investigations have shown that it is a trigenomic hybrid. The aims of this study were to explore the efficiency of progenitor-specific microsatellite markers in detecting the hybrid origins and genome composition of these two allopolyploids, to estimate the frequency of polyploid formation events, and to outline their evolutionary potential for long-term persistence and speciation.
methodsFlow-cytometric ploidy-level screening and genotyping by progenitor-specific microsatellite markers (20 microsatellite loci) were carried out on samples focused on hybridizing populations at Urnerboden, Switzerland, but also including comparative material of the parental species from other sites in the Alps and more distant areas. KEY
resultsIt was confirmed that hybridization between the diploids C. amara and C. rivularis auct. gave rise to triploid C. × insueta, and it is inferred that this has occurred repeatedly. Evidence is provided that C. schulzii comprises three parental genomes and supports its origin from hybridization events between C. × insueta and the locally co-occurring hypotetraploid C. pratensis, leading to two cytotypes of C. schulzii: hypopentaploid and hypohexaploid. Each cytotype of C. schulzii is genetically uniform, suggesting their single origins.
conclusionsPersistence of C. schulzii has presumably been achieved only by perennial growth and clonal reproduction. This contrasts with C. × insueta, in which multiple origins and occasional sexual reproduction have generated sufficient genetic variation for long-term survival and evolutionary success. This study illustrates a complex case of recurrent hybridization and polyploidization events, and highlights the role of triploids that promoted the origin of trigenomic hybrids.
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