Combining population genomics and ecological niche modeling to assess taxon limits between Carex jemtlandica and C. lepidocarpa
| Autor: | Narjes Yousefi, Leif P. Galten, Mika Bendiksby, Petri Kemppainen, Malene Nygaard, Kjell Ivar Flatberg, James D. M. Speed, Reidar Elven, Heidi Solstad |
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| Přispěvatelé: | Organismal and Evolutionary Biology Research Programme, Ecological Genetics Research Unit, University of Zurich, Nygaard, Malene |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
GENETICS species delineation CONSERVATION Population genetics Plant Science Biology 580 Plants (Botany) RAD sequencing SPECIES CONCEPTS 010603 evolutionary biology 01 natural sciences Population genomics 03 medical and health sciences taxonomy Behavior and Systematics 1110 Plant Science SPACE Cyperaceae 10211 Zurich-Basel Plant Science Center Ecology Evolution Behavior and Systematics 030304 developmental biology 0303 health sciences Carex natural hybridization Ecology ALLOZYME population genetics 15. Life on land biology.organism_classification 11831 Plant biology EVOLUTION Environmental niche modelling 10121 Department of Systematic and Evolutionary Botany Taxon 1105 Ecology Evolution Behavior and Systematics DIFFERENTIATION ecological niche modelling 1181 Ecology evolutionary biology Taxonomy (biology) FLAVA COMPLEX CYPERACEAE |
| Zdroj: | Journal of Systematics and Evolution |
| Popis: | Carex section Ceratocystis (Cyperaceae) is a group of recently evolved plant species, in which hybridization is frequent, introgression is documented, taxonomy is complex, and morphological boundaries are vague. Within this section, a unified taxonomic treatment of the Carex jemtlandica-Carex lepidocarpa species complex does not exist, and Norway may currently be the sole country accepting species rank for both. Carex jemtlandica is mainly confined to Fennoscandia and is thus a Fennoscandian conservation responsibility. This motivated us to test the principal hypothesis that both C. jemtlandica and C. lepidocarpa represent evolutionary significant units, and that both deserve their current recognition at species level. We investigated their evolutionary distinctiveness in Norway, using restriction site-associated DNA sequencing and ecological niche modeling. Our genomic results reveal two genetic clusters, largely corresponding to C. jemtlandica and C. lepidocarpa that also remain distinct in sympatry, despite clear indications of ongoing hybridization and introgression. The ecological niche modeling suggests that they occupy different environmental niches. Jointly, our results clearly show that C. jemtlandica and C. lepidocarpa represent separately evolving entities that should qualify recognition as evolutionary significant units. Given the high level of introgression compared to other hybridizing species pairs in Carex we recommend treating C. jemtlandica as a subspecies of C. lepidocarpa. |
| Databáze: | OpenAIRE |
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