Tetraploids do not form cushions: association of ploidy level, growth form and ecology in the High Arctic Saxifraga oppositifolia L. s. lat. (Saxifragaceae) in Svalbard
Saxifraga oppositifolia L. is a common circumpolar plant species that displays considerable morphological and genetic variation throughout its range. It is mainly diploid, but tetraploids are reported from several regions. The growth form varies from prostate to cushion-shaped, and the plant thrives...
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Norsk Polarinstitutt, Oslo
2013
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Online Access: | https://hdl.handle.net/10037/5979 https://doi.org/10.3402/polar.v32i0.20071 |
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ftunivtroemsoe:oai:munin.uit.no:10037/5979 2023-05-15T15:16:17+02:00 Tetraploids do not form cushions: association of ploidy level, growth form and ecology in the High Arctic Saxifraga oppositifolia L. s. lat. (Saxifragaceae) in Svalbard Eidesen, Pernille Bronken Müller, Eike Lettner, Christian Alsos, Inger Greve Bender, Morgan Kristiansen, Martin Peeters, Bart Postma, Froukje Verweij, Koen Frans 2013 https://hdl.handle.net/10037/5979 https://doi.org/10.3402/polar.v32i0.20071 eng eng Norsk Polarinstitutt, Oslo Polar Research (2013), vol. 32: 20071 FRIDAID 1045677 http://dx.doi.org/10.3402/polar.v32i0.20071 0800-0395 https://hdl.handle.net/10037/5979 URN:NBN:no-uit_munin_5665 openAccess VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ecology: 488 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økologi: 488 VDP::Mathematics and natural science: 400::Zoology and botany: 480::Plant physiology: 492 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Plantefysiologi: 492 Journal article Tidsskriftartikkel Peer reviewed 2013 ftunivtroemsoe https://doi.org/10.3402/polar.v32i0.20071 2021-06-25T17:53:49Z Saxifraga oppositifolia L. is a common circumpolar plant species that displays considerable morphological and genetic variation throughout its range. It is mainly diploid, but tetraploids are reported from several regions. The growth form varies from prostate to cushion-shaped, and the plant thrives in wet snow beds as well as on dry ridges. This variation has triggered the curiosity of many researchers, but as yet, no one has explained the observed morphological variation using ecological and/or genetic factors. However, the ploidy level has rarely been taken into account. This is the first study that demonstrates a significant correlation between ploidy level, ecology and growth form in S. oppositifolia. We successfully analysed 193 individuals of S. oppositifolia from 15 locations in Svalbard to investigate possible relationships among growth forms (prostrate, intermediate and cushion), ecological factors (vegetation and soil characteristics) and ploidy level. Results from flow cytometry reported 106 diploids, eight triploids and 79 tetraploids. Tetraploids almost exclusively showed prostrate growth, while the diploids displayed all three growth forms, evidence that growth form is at least partly genetically determined. Our analyses of environmental and vegetation data in relation to ploidy level indicated overlapping niches, but the tetraploids showed a narrower niche, and one shifted towards more benign habitats characterized by higher pH, higher soil temperatures and higher cover of vascular plants. The latter may suggest that tetraploids are slightly better competitors, but less hardy. Thus, autopolyploidy in S. oppositifolia has expanded the ecological amplitude of this species complex. Article in Journal/Newspaper Arctic Polar Research Saxifraga oppositifolia Svalbard University of Tromsø: Munin Open Research Archive Arctic Svalbard Polar Research 32 1 20071 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ecology: 488 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økologi: 488 VDP::Mathematics and natural science: 400::Zoology and botany: 480::Plant physiology: 492 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Plantefysiologi: 492 |
spellingShingle |
VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ecology: 488 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økologi: 488 VDP::Mathematics and natural science: 400::Zoology and botany: 480::Plant physiology: 492 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Plantefysiologi: 492 Eidesen, Pernille Bronken Müller, Eike Lettner, Christian Alsos, Inger Greve Bender, Morgan Kristiansen, Martin Peeters, Bart Postma, Froukje Verweij, Koen Frans Tetraploids do not form cushions: association of ploidy level, growth form and ecology in the High Arctic Saxifraga oppositifolia L. s. lat. (Saxifragaceae) in Svalbard |
topic_facet |
VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ecology: 488 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økologi: 488 VDP::Mathematics and natural science: 400::Zoology and botany: 480::Plant physiology: 492 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Plantefysiologi: 492 |
description |
Saxifraga oppositifolia L. is a common circumpolar plant species that displays considerable morphological and genetic variation throughout its range. It is mainly diploid, but tetraploids are reported from several regions. The growth form varies from prostate to cushion-shaped, and the plant thrives in wet snow beds as well as on dry ridges. This variation has triggered the curiosity of many researchers, but as yet, no one has explained the observed morphological variation using ecological and/or genetic factors. However, the ploidy level has rarely been taken into account. This is the first study that demonstrates a significant correlation between ploidy level, ecology and growth form in S. oppositifolia. We successfully analysed 193 individuals of S. oppositifolia from 15 locations in Svalbard to investigate possible relationships among growth forms (prostrate, intermediate and cushion), ecological factors (vegetation and soil characteristics) and ploidy level. Results from flow cytometry reported 106 diploids, eight triploids and 79 tetraploids. Tetraploids almost exclusively showed prostrate growth, while the diploids displayed all three growth forms, evidence that growth form is at least partly genetically determined. Our analyses of environmental and vegetation data in relation to ploidy level indicated overlapping niches, but the tetraploids showed a narrower niche, and one shifted towards more benign habitats characterized by higher pH, higher soil temperatures and higher cover of vascular plants. The latter may suggest that tetraploids are slightly better competitors, but less hardy. Thus, autopolyploidy in S. oppositifolia has expanded the ecological amplitude of this species complex. |
format |
Article in Journal/Newspaper |
author |
Eidesen, Pernille Bronken Müller, Eike Lettner, Christian Alsos, Inger Greve Bender, Morgan Kristiansen, Martin Peeters, Bart Postma, Froukje Verweij, Koen Frans |
author_facet |
Eidesen, Pernille Bronken Müller, Eike Lettner, Christian Alsos, Inger Greve Bender, Morgan Kristiansen, Martin Peeters, Bart Postma, Froukje Verweij, Koen Frans |
author_sort |
Eidesen, Pernille Bronken |
title |
Tetraploids do not form cushions: association of ploidy level, growth form and ecology in the High Arctic Saxifraga oppositifolia L. s. lat. (Saxifragaceae) in Svalbard |
title_short |
Tetraploids do not form cushions: association of ploidy level, growth form and ecology in the High Arctic Saxifraga oppositifolia L. s. lat. (Saxifragaceae) in Svalbard |
title_full |
Tetraploids do not form cushions: association of ploidy level, growth form and ecology in the High Arctic Saxifraga oppositifolia L. s. lat. (Saxifragaceae) in Svalbard |
title_fullStr |
Tetraploids do not form cushions: association of ploidy level, growth form and ecology in the High Arctic Saxifraga oppositifolia L. s. lat. (Saxifragaceae) in Svalbard |
title_full_unstemmed |
Tetraploids do not form cushions: association of ploidy level, growth form and ecology in the High Arctic Saxifraga oppositifolia L. s. lat. (Saxifragaceae) in Svalbard |
title_sort |
tetraploids do not form cushions: association of ploidy level, growth form and ecology in the high arctic saxifraga oppositifolia l. s. lat. (saxifragaceae) in svalbard |
publisher |
Norsk Polarinstitutt, Oslo |
publishDate |
2013 |
url |
https://hdl.handle.net/10037/5979 https://doi.org/10.3402/polar.v32i0.20071 |
geographic |
Arctic Svalbard |
geographic_facet |
Arctic Svalbard |
genre |
Arctic Polar Research Saxifraga oppositifolia Svalbard |
genre_facet |
Arctic Polar Research Saxifraga oppositifolia Svalbard |
op_relation |
Polar Research (2013), vol. 32: 20071 FRIDAID 1045677 http://dx.doi.org/10.3402/polar.v32i0.20071 0800-0395 https://hdl.handle.net/10037/5979 URN:NBN:no-uit_munin_5665 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.3402/polar.v32i0.20071 |
container_title |
Polar Research |
container_volume |
32 |
container_issue |
1 |
container_start_page |
20071 |
_version_ |
1766346566311870464 |