ArticleAnnals of botany2019
Iterative allogamy-autogamy transitions drive actual and incipient speciation during the ongoing evolutionary radiation within the orchid genus Epipactis (Orchidaceae).
Article in Annals of botany, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed, 32 citations in OpenAlex.
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- Persistent Habitat Instability and Patchiness, Sexual Attraction, Founder Events, Drift and Selection: A Recipe for Rapid Diversification of Orchids.Plants (Basel, Switzerland) · 2025Review
- Shape and Size Variability of the Gynostemium inBiology · 2025Article
- New Cytogenetic Data for the Neottieae Tribe (Orchidaceae) in the Mediterranean Region.Plants (Basel, Switzerland) · 2024Article
- Historical biogeography and local adaptation explain population genetic structure in a widespread terrestrial orchid.Annals of botany · 2023Article
- Article
- Why does an obligate autogamous orchid produce insect attractants in nectar? - a case study on Epipactis albensis (Orchidaceae).BMC plant biology · 2022Article
- ThePlants (Basel, Switzerland) · 2021Review
- Integrative Study of Genotypic and Phenotypic Diversity in the Eurasian Orchid GenusFrontiers in plant science · 2021Article
- Impact of mating system on range size and niche breadth in Epipactis (Orchidaceae).Annals of botany · 2020Article
- A Revision of the Taxonomy and Identification ofPlants (Basel, Switzerland) · 2020Article
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Authors and funding
6 authors at 3 institutions in 3 countries.
Funding
Abstract
BACKGROUND AND
aimsThe terrestrial orchid genus Epipactis has become a model system for the study of speciation via transitions from allogamy to autogamy, but close phylogenetic relationships have proven difficult to resolve through Sanger sequencing.
methodsWe analysed with restriction site-associated sequencing (RAD-seq) 108 plants representing 29 named taxa that together span the genus, focusing on section Epipactis. Our filtered matrix of 12 543 single nucleotide polymorphisms was used to generate an unrooted network and a rooted, well-supported likelihood tree. We further inferred genetic structure through a co-ancestry heat map and admixture analysis, and estimated inbreeding coefficients per sample. KEY
resultsThe 27 named taxa of the ingroup were resolved as 11 genuine, geographically widespread species: four dominantly allogamous and seven dominantly autogamous. A single comparatively allogamous species, E. helleborine, is the direct ancestor of most of the remaining species, though one of the derived autogams has generated one further autogamous species. An assessment of shared ancestry suggested only sporadic hybridization between the re-circumscribed species. Taxa with the greatest inclination towards autogamy show less, if any, admixture, whereas the gene pools of more allogamous species contain a mixture alleles found in the autogams.
conclusionsThis clade is presently undergoing an evolutionary radiation driven by a wide spectrum of genotypic, phenotypic and environmental factors. Epipactis helleborine has also frequently generated many local variants showing inclinations toward autogamy (and occasionally cleistogamy), best viewed as incipient speciation from within the genetic background provided by E. helleborine, which thus becomes an example of a convincingly paraphyletic species. Autogams are often as widespread and ecologically successful as allogams.
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