ArticleEcology and evolution2015
Ecological differentiation, lack of hybrids involving diploids, and asymmetric gene flow between polyploids in narrow contact zones of Senecio carniolicus (syn. Jacobaea carniolica, Asteraceae).
Article in Ecology and evolution, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.
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25 citing papers in PubMed, 64 citations in OpenAlex.
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- An interactive heuristic model to test ecological and evolutionary hypotheses on incipient polyploid species.Scientific reports · 2025Article
- Niche expansion of polyploid cytotypes shaped the phylogeographical history of the Salix retusa complex in the European Alpine System.Annals of botany · 2025Article
- Overcoming Ploidy Barriers: The Role of Triploid Bridges in the Genetic Introgression of Cardamine amara.Molecular ecology · 2025Article
- Polyploidy linked with species richness but not diversification rates or niche breadth in Australian Pomaderreae (Rhamnaceae).Annals of botany · 2025Article
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- Ploidy as a leaky reproductive barrier: mechanisms, rates and evolutionary significance of interploidy gene flow.Annals of botany · 2024Review
- Morphological and environmental differentiation as prezygotic reproductive barriers between parapatric and allopatric Campanula rotundifolia agg. cytotypes.Annals of botany · 2023Article
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- Natural hybridization among three Rhododendron species (Ericaceae) revealed by morphological and genomic evidence.BMC plant biology · 2021Article
- Cytotype distribution and chloroplast phylogeography of the Actinidia chinensis complex.BMC plant biology · 2021Article
- Variation in heteroploid reproduction and gene flow across a polyploid complex: One size does not fit all.Ecology and evolution · 2021Article
- Polyploids increase overall diversity despite higher turnover than diploids in the Brassicaceae.Proceedings. Biological sciences · 2020Article
- Occurrence of apomictic conspecifics and ecological preferences rather than colonization history govern the geographic distribution of sexualEcology and evolution · 2020Article
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- Has the Polyploid Wave Ebbed?Frontiers in plant science · 2020Article
- Hidden Hybridization and Habitat Differentiation in a Mediterranean Macrophyte, the Euryhaline GenusFrontiers in plant science · 2020Article
- So Closely Related and Yet So Different: Strong Contrasts Between the Evolutionary Histories of Species of theFrontiers in plant science · 2020Article
- Article
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Authors and funding
7 authors at 5 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Areas of immediate contact of different cytotypes offer a unique opportunity to study evolutionary dynamics within heteroploid species and to assess isolation mechanisms governing coexistence of cytotypes of different ploidy. The degree of reproductive isolation of cytotypes, that is, the frequency of heteroploid crosses and subsequent formation of viable and (partly) fertile hybrids, plays a crucial role for the long-term integrity of lineages in contact zones. Here, we assessed fine-scale distribution, spatial clustering, and ecological niches as well as patterns of gene flow in parental and hybrid cytotypes in zones of immediate contact of di-, tetra-, and hexaploid Senecio carniolicus (Asteraceae) in the Eastern Alps. Cytotypes were spatially separated also at the investigated microscale; the strongest spatial separation was observed for the fully interfertile tetra- and hexaploids. The three main cytotypes showed highly significant niche differences, which were, however, weaker than across their entire distribution ranges in the Eastern Alps. Individuals with intermediate ploidy levels were found neither in the diploid/tetraploid nor in the diploid/hexaploid contact zones indicating strong reproductive barriers. In contrast, pentaploid individuals were frequent in the tetraploid/hexaploid contact zone, albeit limited to a narrow strip in the immediate contact zone of their parental cytotypes. AFLP fingerprinting data revealed introgressive gene flow mediated by pentaploid hybrids from tetra- to hexaploid individuals, but not vice versa. The ecological niche of pentaploids differed significantly from that of tetraploids but not from hexaploids.
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