Epipactis×subtilis(Orchidaceae), a New Hybrid betweenE. albensisandE. purpurata

Jakubska-Busse, Anna; Żołubak, Elżbieta; Łobas, Zbigniew

doi:10.5735/085.054.0322

Cited by 3 publications

(1 citation statement)

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“…However, despite these exquisite barriers that prevent invasion of the genome from one species to another, natural hybrids are quite common and have continuously been discovering in every main lineage of this family (e.g. Iamonico et al 2011;Jakubska-Busse et al 2017;Lee 2013;Liu & Chen 2007;Neto et al 2012;Nielsen 2000).…”

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confidence: 99%

Two new natural hybrids in the genus Pleione (Orchidaceae) from China

et al. 2018

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Several species in the genus Pleione (Orchidaceae) have same or overlapping geographical distribution in China. In this study, two new natural hybrids, Pleione × baoshanensis and Pleione × maoershanensis, were described and illustrated. The parentage for these two hybrids was confirmed using molecular data from ITS of the nuclear ribosomal, trnT-trnL spacer and trnL-trnF region (trnL intron and trnL-trnF spacer) of the plastid DNA. Pleione × baoshanensis is intermediate between P. albiflora and P. yunnanensis, and characterized by its erose lamellae on the lip. Meanwhile, Pleione × maoershanensis is intermediate between P. hookeriana (P. chunii) and P. pleionoides, and characterized by its deep lacerate lamellae on the lip. For the individuals tested, molecular data suggest that P. albiflora is the maternal parent of Pleione × baoshanensis, and P. hookeriana (P. chunii) is the maternal parent of Pleione × maoershanensis. The history and taxonomic status of P. chunii is also discussed.

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Section: Introductionmentioning

confidence: 99%

Two new natural hybrids in the genus Pleione (Orchidaceae) from China

et al. 2018

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Iterative allogamy–autogamy transitions drive actual and incipient speciation during the ongoing evolutionary radiation within the orchid genus Epipactis (Orchidaceae)

et al. 2019

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Background and Aims The 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. Methods We 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 Results The 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. Conclusions This 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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The Epipactis helleborine Group (Orchidaceae): An Overview of Recent Taxonomic Changes, with an Updated List of Currently Accepted Taxa

Łobas

Khapugin

Żołubak

et al. 2021

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The Epipactis helleborine (L.) Crantz group is one of the most taxonomically challenging species complexes within the genus Epipactis. Because of the exceptionally high levels of morphological variability and the ability to readily cross with other species, ninety different taxa at various taxonomic ranks have already been described within its nominative subspecies, but the taxonomic status of most of them is uncertain, widely disputed, and sometimes even irrelevant. The present review is based on results of the most recent research devoted to the E. helleborine group taxonomy. In addition, we analysed data about taxa belonging to this group presented in some research articles and monographs devoted directly to the genus Epipactis or to orchids in certain area(s). Based on the reviewed literature and data collected in four taxonomic databases available online, we propose an updated list of the 10 currently accepted taxa in the E. helleborine group (two species, six subspecies, and two varieties), which includes E. helleborine (L.) Crantz subsp. helleborine; E. helleborine subsp. bithynica (Robatsch) Kreutz, E. helleborine subsp. distans (Arv.-Touv.) R.Engel and P.Quentin; E. helleborine subsp. neerlandica (Verm.) Buttler; E. helleborine var. tangutica (Schltr.) S.C.Chen and G.H.Zhu; E. helleborine subsp. tremolsii (Pau) E.Klein; E. helleborine subsp. voethii (Robatsch) Jakubska-Busse, Żołubak, and Łobas, stat. nov.; E. condensata Boiss. ex D.P.Young, E. condensata var. kuenkeleana (Akhalk., H.Baumann, R.Lorenz, and Mosul.) Popovich; and E. cupaniana C.Brullo, D’Emerico, and Pulv.

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Epipactis×subtilis(Orchidaceae), a New Hybrid betweenE. albensisandE. purpurata

Cited by 3 publications

References 9 publications

Two new natural hybrids in the genus Pleione (Orchidaceae) from China

Two new natural hybrids in the genus Pleione (Orchidaceae) from China

Iterative allogamy–autogamy transitions drive actual and incipient speciation during the ongoing evolutionary radiation within the orchid genus Epipactis (Orchidaceae)

The Epipactis helleborine Group (Orchidaceae): An Overview of Recent Taxonomic Changes, with an Updated List of Currently Accepted Taxa

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