Genetic diversity and differentiation of allopolyploid Dactylorhiza (Orchidaceae) with particular focus on the Dactylorhiza majalis ssp traunsteineri/lapponica complex
(2009) In Biological Journal of the Linnean Society 97(1). p.52-67- Abstract
- Genetic differentiation of Dactylorhiza majalis ssp. traunsteineri from the Alps, Scandinavia, and Britain was studied and compared with other allotetraploid members of the systematically challenging genus Dactylorhiza. One-hundred and eleven populations from altogether 18 taxa were analysed for eight polymorphic plastid markers and two size-variable fragments from the nuclear internal transcribed spacer (ITS) region. In total, 60 plastid haplotypes and six ITS alleles were found among the 737 individuals analysed. No clear differentiation between populations of ssp. traunsteineri from the three regions was revealed. However, ssp. traunsteineri was genetically differentiated from Dactylorhiza baumanniana, Dactylorhiza elata, and D. majalis... (More)
- Genetic differentiation of Dactylorhiza majalis ssp. traunsteineri from the Alps, Scandinavia, and Britain was studied and compared with other allotetraploid members of the systematically challenging genus Dactylorhiza. One-hundred and eleven populations from altogether 18 taxa were analysed for eight polymorphic plastid markers and two size-variable fragments from the nuclear internal transcribed spacer (ITS) region. In total, 60 plastid haplotypes and six ITS alleles were found among the 737 individuals analysed. No clear differentiation between populations of ssp. traunsteineri from the three regions was revealed. However, ssp. traunsteineri was genetically differentiated from Dactylorhiza baumanniana, Dactylorhiza elata, and D. majalis ssp. sphagnicola, although the majority of allotetraploid taxa remained inseparable. Judging from the degree of concerted evolution in ITS, D. majalis ssp. alpestris may be regarded as a relatively old allotetraploid, whereas ssp. baltica and ssp. purpurella may be considerably younger. Based on plastid data, the Alp region had the highest genetic diversity followed by Scandinavia and Britain. The geographic distribution of haplotypes provided support for possible refugial areas around the Alps and for several independent immigration routes into Scandinavia after the last ice age. (C) 2009 The Linnean Society of London, Biological Journal of the Linnean Society, 2009, 97, 52-67. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1428085
- author
- Olofsson, Sofie LU and Hedrén, Mikael LU
- organization
- publishing date
- 2009
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- plastid DNA, phylogeography, ITS, narrow-leaved marsh-orchid, polyploid, evolution
- in
- Biological Journal of the Linnean Society
- volume
- 97
- issue
- 1
- pages
- 52 - 67
- publisher
- Oxford University Press
- external identifiers
-
- wos:000265406800005
- scopus:65249116377
- ISSN
- 0024-4066
- DOI
- 10.1111/j.1095-8312.2008.01183.x
- language
- English
- LU publication?
- yes
- id
- 4a0ba458-a955-4070-8045-c6d29f47fcf9 (old id 1428085)
- date added to LUP
- 2016-04-01 11:33:51
- date last changed
- 2022-01-26 07:03:43
@article{4a0ba458-a955-4070-8045-c6d29f47fcf9,
abstract = {{Genetic differentiation of Dactylorhiza majalis ssp. traunsteineri from the Alps, Scandinavia, and Britain was studied and compared with other allotetraploid members of the systematically challenging genus Dactylorhiza. One-hundred and eleven populations from altogether 18 taxa were analysed for eight polymorphic plastid markers and two size-variable fragments from the nuclear internal transcribed spacer (ITS) region. In total, 60 plastid haplotypes and six ITS alleles were found among the 737 individuals analysed. No clear differentiation between populations of ssp. traunsteineri from the three regions was revealed. However, ssp. traunsteineri was genetically differentiated from Dactylorhiza baumanniana, Dactylorhiza elata, and D. majalis ssp. sphagnicola, although the majority of allotetraploid taxa remained inseparable. Judging from the degree of concerted evolution in ITS, D. majalis ssp. alpestris may be regarded as a relatively old allotetraploid, whereas ssp. baltica and ssp. purpurella may be considerably younger. Based on plastid data, the Alp region had the highest genetic diversity followed by Scandinavia and Britain. The geographic distribution of haplotypes provided support for possible refugial areas around the Alps and for several independent immigration routes into Scandinavia after the last ice age. (C) 2009 The Linnean Society of London, Biological Journal of the Linnean Society, 2009, 97, 52-67.}},
author = {{Olofsson, Sofie and Hedrén, Mikael}},
issn = {{0024-4066}},
keywords = {{plastid DNA; phylogeography; ITS; narrow-leaved marsh-orchid; polyploid; evolution}},
language = {{eng}},
number = {{1}},
pages = {{52--67}},
publisher = {{Oxford University Press}},
series = {{Biological Journal of the Linnean Society}},
title = {{Genetic diversity and differentiation of allopolyploid Dactylorhiza (Orchidaceae) with particular focus on the Dactylorhiza majalis ssp traunsteineri/lapponica complex}},
url = {{http://dx.doi.org/10.1111/j.1095-8312.2008.01183.x}},
doi = {{10.1111/j.1095-8312.2008.01183.x}},
volume = {{97}},
year = {{2009}},
}