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Iterative allogamy-autogamy transitions drive actual and incipient speciation during the ongoing evolutionary radiation within the orchid genus Epipactis (Orchidaceae).
- G. Sramkó, O. Paun, M. K. Brandrud, L. Laczkó, A. V, R. Bateman
- BiologyAnnals of botany
- 18 October 2019
This clade is presently undergoing an evolutionary radiation driven by a wide spectrum of genotypic, phenotypic and environmental factors and is best viewed as incipient speciation from within the genetic background provided by Epipactis helleborine, which thus becomes an example of a convincingly paraphyletic species.
Restriction-site associated DNA sequencing supports a sister group relationship of Nigritella and Gymnadenia (Orchidaceae).
RADseq provides evidence for parallel ecotypic divergence in the autotetraploid Cochlearia officinalis in Northern Norway
Whether three autotetraploid Cochlearia officinalis ecotypes, adapted to different habitats (beach, estuary, spring), are genetically differentiated and result from parallel ecotypic divergence in two distinct geographical regions is investigated.
Polyploidy and ecotype variation in Cochlearia officinalis L. and related species
- M. K. Brandrud
The genetic aspect of the subspecies of C. officinalis in Northern Scandinavia is similar to that of the closely related species in section Cochlearia, while the distribution of the polyploid origin is different.
Phylogenomic Relationships of Diploids and the Origins of Allotetraploids in Dactylorhiza (Orchidaceae)
This work first investigates circumscription and relationships of diploid species in the genus using coalescent and maximum likelihood methods, and then group 16 allotetraploids by maximum affiliation to their putative parental diploids, implementing a method based on genotype likelihoods.
Using genomics to guide seed‐sourcing at the right taxonomical level for ecological restoration projects: The complex case of Carex bigelowii s.lat. in Norway
- K. Westergaard, M. O. Kyrkjeeide, M. K. Brandrud
- Environmental ScienceEcology and evolution
- 17 November 2021
Results show how genomic screening of diversity and structure in a species complex can alleviate the taxonomic impediment, inform practical questions, and legal requirements related to seed‐sourcing, and together with traditional taxonomic work provide necessary information for a sound management of biodiversity.
The use of phylogenomic tools to investigate diploid and polyploid evolution in Dactylorhiza and other orchids
- M. K. Brandrud
Die Untersuchung phylogenetischer Beziehungen von sich kurzlich entwickelten Gruppen stellt eine grose Herausforderung dar, insbesondere bei fortlaufender Hybridisierung. Allo-polyploide Organismen…
Conserving on the edge: genetic variation and structure in northern populations of the endangered plant Dracocephalum ruyschiana L. (Lamiaceae)
- M. O. Kyrkjeeide, K. Westergaard, O. Stabbetorp
- Environmental Science, BiologyConservation Genetics
- 20 May 2020
The results highlight the importance of an integrated, interdisciplinary framework to better monitor and conserve biodiversity at several levels and suggest that two sites representing the two other genetic groups should be included in the national monitoring program to better conserve the genetic variation found in the Norwegian population of D. ruyschiana.