Geographical variation and systematics of the tetraploid marsh orchid Dactylorhiza majalis subsp sphagnicola (Orchidaceae) and closely related taxa
Dactylorhiza majalis subsp. sphagnicola is an allotetraploid marsh orchid derived from parents closely similar to present-day D. incarnata and the western European form of D. maculata subsp. maculata, suggesting that it has a postglacial origin. It extends from northwestern continental Europe into a...
Published in: | Botanical Journal of the Linnean Society |
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2012
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Online Access: | https://lup.lub.lu.se/record/2348842 https://doi.org/10.1111/j.1095-8339.2011.01198.x |
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ftulundlup:oai:lup.lub.lu.se:8a60720b-6fd3-4011-9dfe-5a55c94341aa 2023-05-15T16:41:26+02:00 Geographical variation and systematics of the tetraploid marsh orchid Dactylorhiza majalis subsp sphagnicola (Orchidaceae) and closely related taxa Hedrén, Mikael Olofsson, Sofie Ståhlberg, David 2012 https://lup.lub.lu.se/record/2348842 https://doi.org/10.1111/j.1095-8339.2011.01198.x eng eng Oxford University Press https://lup.lub.lu.se/record/2348842 http://dx.doi.org/10.1111/j.1095-8339.2011.01198.x wos:000298980400003 scopus:84855798407 Botanical Journal of the Linnean Society; 168(2), pp 174-193 (2012) ISSN: 1095-8339 Ecology allopolyploidy genetic diversity hybridization introgression ITS nuclear microsatellites phylogeography plastid DNA taxonomy contributiontojournal/article info:eu-repo/semantics/article text 2012 ftulundlup https://doi.org/10.1111/j.1095-8339.2011.01198.x 2023-02-01T23:29:33Z Dactylorhiza majalis subsp. sphagnicola is an allotetraploid marsh orchid derived from parents closely similar to present-day D. incarnata and the western European form of D. maculata subsp. maculata, suggesting that it has a postglacial origin. It extends from northwestern continental Europe into areas formerly covered by the Weichselian ice sheet in mid-Scandinavia. Here, we studied the variation at both the plastid and nuclear marker systems to describe the geographical variation in subsp. sphagnicola and its evolutionary history. We investigated whether subsp. sphagnicola is affected by secondary hybridization and gene flow from its parental lineages or from other allotetraploid marsh orchids, and we also compared subsp. sphagnicola with other allotetraploids of similar origins. We analysed 492 plants from 50 populations. Thirty-seven populations were collected as potential Dactylorhiza majalis subsp. sphagnicola, five as subsp. sesquipedalis (D. elata), one as D. elata subsp. brennensis, one as subsp. calcifugiens, one as subsp. occidentalis and the remaining five as populations with some affinity to subsp. lapponica (including D. traunsteineri). All populations were analysed for plastid haplotypes and nuclear internal transcribed spacer (ITS) allele frequencies, and a subset of 43 populations was analysed for five nuclear microsatellite loci. Dactylorhiza majalis subsp. sphagnicola was dominated by a single plastid haplotype that was also dominant in western European D. maculata subsp. maculata, and most of the alternative haplotypes differed by only one mutation from the dominant one. There was more variation in nuclear microsatellites and ITS, and the variation was geographically structured in these markers. Subspecies occidentalis and calcifugiens shared haplotypes with subsp. sphagnicola, whereas subsp. sesquipedalis and brennensis had other haplotypes. Dactylorhiza majalis subsp. sphagnicola may have a postglacial origin within its present continental distribution. It has incorporated genetic material ... Article in Journal/Newspaper Ice Sheet Lund University Publications (LUP) Botanical Journal of the Linnean Society 168 2 174 193 |
institution |
Open Polar |
collection |
Lund University Publications (LUP) |
op_collection_id |
ftulundlup |
language |
English |
topic |
Ecology allopolyploidy genetic diversity hybridization introgression ITS nuclear microsatellites phylogeography plastid DNA taxonomy |
spellingShingle |
Ecology allopolyploidy genetic diversity hybridization introgression ITS nuclear microsatellites phylogeography plastid DNA taxonomy Hedrén, Mikael Olofsson, Sofie Ståhlberg, David Geographical variation and systematics of the tetraploid marsh orchid Dactylorhiza majalis subsp sphagnicola (Orchidaceae) and closely related taxa |
topic_facet |
Ecology allopolyploidy genetic diversity hybridization introgression ITS nuclear microsatellites phylogeography plastid DNA taxonomy |
description |
Dactylorhiza majalis subsp. sphagnicola is an allotetraploid marsh orchid derived from parents closely similar to present-day D. incarnata and the western European form of D. maculata subsp. maculata, suggesting that it has a postglacial origin. It extends from northwestern continental Europe into areas formerly covered by the Weichselian ice sheet in mid-Scandinavia. Here, we studied the variation at both the plastid and nuclear marker systems to describe the geographical variation in subsp. sphagnicola and its evolutionary history. We investigated whether subsp. sphagnicola is affected by secondary hybridization and gene flow from its parental lineages or from other allotetraploid marsh orchids, and we also compared subsp. sphagnicola with other allotetraploids of similar origins. We analysed 492 plants from 50 populations. Thirty-seven populations were collected as potential Dactylorhiza majalis subsp. sphagnicola, five as subsp. sesquipedalis (D. elata), one as D. elata subsp. brennensis, one as subsp. calcifugiens, one as subsp. occidentalis and the remaining five as populations with some affinity to subsp. lapponica (including D. traunsteineri). All populations were analysed for plastid haplotypes and nuclear internal transcribed spacer (ITS) allele frequencies, and a subset of 43 populations was analysed for five nuclear microsatellite loci. Dactylorhiza majalis subsp. sphagnicola was dominated by a single plastid haplotype that was also dominant in western European D. maculata subsp. maculata, and most of the alternative haplotypes differed by only one mutation from the dominant one. There was more variation in nuclear microsatellites and ITS, and the variation was geographically structured in these markers. Subspecies occidentalis and calcifugiens shared haplotypes with subsp. sphagnicola, whereas subsp. sesquipedalis and brennensis had other haplotypes. Dactylorhiza majalis subsp. sphagnicola may have a postglacial origin within its present continental distribution. It has incorporated genetic material ... |
format |
Article in Journal/Newspaper |
author |
Hedrén, Mikael Olofsson, Sofie Ståhlberg, David |
author_facet |
Hedrén, Mikael Olofsson, Sofie Ståhlberg, David |
author_sort |
Hedrén, Mikael |
title |
Geographical variation and systematics of the tetraploid marsh orchid Dactylorhiza majalis subsp sphagnicola (Orchidaceae) and closely related taxa |
title_short |
Geographical variation and systematics of the tetraploid marsh orchid Dactylorhiza majalis subsp sphagnicola (Orchidaceae) and closely related taxa |
title_full |
Geographical variation and systematics of the tetraploid marsh orchid Dactylorhiza majalis subsp sphagnicola (Orchidaceae) and closely related taxa |
title_fullStr |
Geographical variation and systematics of the tetraploid marsh orchid Dactylorhiza majalis subsp sphagnicola (Orchidaceae) and closely related taxa |
title_full_unstemmed |
Geographical variation and systematics of the tetraploid marsh orchid Dactylorhiza majalis subsp sphagnicola (Orchidaceae) and closely related taxa |
title_sort |
geographical variation and systematics of the tetraploid marsh orchid dactylorhiza majalis subsp sphagnicola (orchidaceae) and closely related taxa |
publisher |
Oxford University Press |
publishDate |
2012 |
url |
https://lup.lub.lu.se/record/2348842 https://doi.org/10.1111/j.1095-8339.2011.01198.x |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
Botanical Journal of the Linnean Society; 168(2), pp 174-193 (2012) ISSN: 1095-8339 |
op_relation |
https://lup.lub.lu.se/record/2348842 http://dx.doi.org/10.1111/j.1095-8339.2011.01198.x wos:000298980400003 scopus:84855798407 |
op_doi |
https://doi.org/10.1111/j.1095-8339.2011.01198.x |
container_title |
Botanical Journal of the Linnean Society |
container_volume |
168 |
container_issue |
2 |
container_start_page |
174 |
op_container_end_page |
193 |
_version_ |
1766031861508734976 |