ArticleAnnals of botany2012
Cytotype distribution at a diploid-hexaploid contact zone in Aster amellus (Asteraceae).
Article in Annals of botany, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.
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Who cites it
24 citing papers in PubMed.
- Hybridization and Polyploidy Shaped the Evolutionary History of a Complex of Cryptic Species in European Woodrushes (Luzula sect. Luzula).Systematic biology · 2026Article
- Spatial Distribution of Genetic, Ploidy, and Morphological Variation of the Edaphic Steno-EndemicPlants (Basel, Switzerland) · 2025Article
- Ploidy as a leaky reproductive barrier: mechanisms, rates and evolutionary significance of interploidy gene flow.Annals of botany · 2024Review
- Article
- Genetic Variability in Balkan Paleoendemic Resurrection PlantsFrontiers in plant science · 2022Article
- Single Independent Autopolyploidization Events From Distinct Diploid Gene Pools and Residual Sexuality Support Range Expansion of Locally Adapted Tetraploid Genotypes in a South American Grass.Frontiers in genetics · 2021Article
- The role of multiple reproductive barriers: strong post-pollination interactions govern cytotype isolation in a tetraploid-octoploid contact zone.Annals of botany · 2020Article
- Different Patterns of Ecological Divergence Between Two Tetraploids and Their Diploid Counterpart in a Parapatric Linear Coastal Distribution Polyploid Complex.Frontiers in plant science · 2020Article
- Effects of polyploidization on the contents of photosynthetic pigments are largely population-specific.Photosynthesis research · 2019Article
- Unmasking cryptic biodiversity in polyploids: origin and diversification of Aster amellus aggregate.Annals of botany · 2018Article
- Intraspecific ecological niche divergence and reproductive shifts foster cytotype displacement and provide ecological opportunity to polyploids.Annals of botany · 2018Article
- Complex cytogeographical patterns reveal a dynamic tetraploid-octoploid contact zone.AoB PLANTS · 2018Article
- Colchicine application significantly affects plant performance in the second generation of synthetic polyploids and its effects vary between populations.Annals of botany · 2017Article
- Evolutionary dynamics of mixed-ploidy populations in an annual herb: dispersal, local persistence and recurrent origins of polyploids.Annals of botany · 2017Article
- Factors influencing distribution and local coexistence of diploids and tetraploids of Vicia cracca: inferences from a common garden experiment.Journal of plant research · 2017Article
- Agronomic Trait Variations and Ploidy Differentiation of Kiwiberries in Northwest China: Implication for Breeding.Frontiers in plant science · 2017Article
- Flow cytometry, microsatellites and niche models reveal the origins and geographical structure of Alnus glutinosa populations in Europe.Annals of botany · 2016Article
- Ecological differentiation, lack of hybrids involving diploids, and asymmetric gene flow between polyploids in narrow contact zones of Senecio carniolicus (syn. Jacobaea carniolica, Asteraceae).Ecology and evolution · 2015Article
- Article
- Are tetraploids more successful? Floral signals, reproductive success and floral isolation in mixed-ploidy populations of a terrestrial orchid.Annals of botany · 2015Article
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4 authors.
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Abstract
BACKGROUND AND
aimsThe present study aims to assess the diversity and distribution of cytotypes of Aster amellus in central and eastern Europe, contributing with data to improve understanding of the evolutionary dynamics of the contact zone between diploids and hexaploids of this polyploid complex.
methodsLarge-scale cytotype screening of 4720 individuals collected in 229 populations was performed using 4',6-diamidino-2-phenylindole (DAPI) flow cytometry. Fine-scale cytotype screening was performed in the mixed-ploidy population. Reproductive variables, such as number of florets per flower head, seed set and seedling emergence, as well as ploidy level of seeds and seedlings were recorded in this population. KEY
resultsThe diploid-hexaploid contact zone is large and complex, reaching the Czech Republic in the west, Austria in the south, Poland in the north-east and Romania in the extreme east of the surveyed areas. Most populations presented only one cytotype, either diploid or hexaploid. In several areas of the contact zone both cytotypes were found to grow in parapatry. One mixed-ploidy population of diploids and hexaploids was detected for the first time, but no signs of hybridization were detected. In this population, diploids had a significantly lower reproductive success, and significantly higher production of intercytotype offspring, being in reproductive disadvantage in comparison with hexaploids.
conclusionsThe contact zone of diploid and hexaploid A. amellus in central and eastern Europe seems to be highly dynamic and diffuse, with both primary and secondary contacts being possible. The obtained results suggest the origin of hexaploids through diploids, overall supporting previous hypotheses that this species is autopolyploid. Data from the only mixed-ploidy population detected so far suggest that the minority cytotype exclusion is an important evolutionary mechanisms driving the prevalence of single-cytotype populations, and thus contributing to the current distributional patterns of the cytotypes of A. amellus.
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