Spatial genetic structure of the sea sandwort ( Honckenya peploides ) on Surtsey: an immigrant's journey
Sea sandwort ( Honckenya peploides ) was one of the first plants to successfully colonize and reproduce on the volcanic island Surtsey, formed in 1963 off the southern coast of Iceland. Using amplified fragment length polymorphic (AFLP) markers, we examined levels of genetic variation and differenti...
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2014
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ftdoajarticles:oai:doaj.org/article:de5430ac1ea64c3a8a14e6f05b0990f0 2023-05-15T16:30:21+02:00 Spatial genetic structure of the sea sandwort ( Honckenya peploides ) on Surtsey: an immigrant's journey S. H. Árnason Ǽ. Th. Thórsson B. Magnússon M. Philipp H. Adsersen K. Anamthawat-Jónsson 2014-11-01T00:00:00Z https://doi.org/10.5194/bg-11-6495-2014 https://doaj.org/article/de5430ac1ea64c3a8a14e6f05b0990f0 EN eng Copernicus Publications http://www.biogeosciences.net/11/6495/2014/bg-11-6495-2014.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 1726-4170 1726-4189 doi:10.5194/bg-11-6495-2014 https://doaj.org/article/de5430ac1ea64c3a8a14e6f05b0990f0 Biogeosciences, Vol 11, Iss 22, Pp 6495-6507 (2014) Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 article 2014 ftdoajarticles https://doi.org/10.5194/bg-11-6495-2014 2022-12-31T02:13:35Z Sea sandwort ( Honckenya peploides ) was one of the first plants to successfully colonize and reproduce on the volcanic island Surtsey, formed in 1963 off the southern coast of Iceland. Using amplified fragment length polymorphic (AFLP) markers, we examined levels of genetic variation and differentiation among populations of H. peploides on Surtsey in relation to populations on the nearby island Heimaey and from the southern coast of Iceland. Selected populations from Denmark and Greenland were used for comparison. In addition, we tested whether the effects of isolation by distance could be seen in the Surtsey populations. Using two primer combinations, we obtained 173 AFLP markers from a total of 347 plant samples. The resulting binary matrix was then analysed statistically. The main results include the following: (i) Surtsey had the highest proportion of polymorphic markers as well as a comparatively high genetic diversity (55.5% proportion of polymorphic loci, PLP; 0.1974 H E ) and Denmark the lowest (31.8% PLP; 0.132 H E ), indicating rapid expansion during an early stage of population establishment on Surtsey and/or multiple origins of immigrants; (ii) the total genetic differentiation ( F ST ) among Surtsey (0.0714) and Heimaey (0.055) populations was less than half of that found among the mainland populations in Iceland (0.1747), indicating substantial gene flow on the islands; (iii) most of the genetic variation (79%, p < 0.001) was found within localities, possibly due to the outcrossing and subdioecious nature of the species; (iv) a significant genetic distance was found within Surtsey, among sites, and this appeared to correlate with the age of plant colonization; and (v) the genetic structure analysis indicated multiple colonization episodes on Surtsey, whereby H. peploides most likely immigrated from the nearby island of Heimaey and directly from the southern coast of Iceland. Article in Journal/Newspaper Greenland Heimaey Honckenya peploides Iceland Surtsey Directory of Open Access Journals: DOAJ Articles Greenland Heimaey ENVELOPE(-22.486,-22.486,65.099,65.099) Surtsey ENVELOPE(-20.608,-20.608,63.301,63.301) Biogeosciences 11 22 6495 6507 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
spellingShingle |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 S. H. Árnason Ǽ. Th. Thórsson B. Magnússon M. Philipp H. Adsersen K. Anamthawat-Jónsson Spatial genetic structure of the sea sandwort ( Honckenya peploides ) on Surtsey: an immigrant's journey |
topic_facet |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
description |
Sea sandwort ( Honckenya peploides ) was one of the first plants to successfully colonize and reproduce on the volcanic island Surtsey, formed in 1963 off the southern coast of Iceland. Using amplified fragment length polymorphic (AFLP) markers, we examined levels of genetic variation and differentiation among populations of H. peploides on Surtsey in relation to populations on the nearby island Heimaey and from the southern coast of Iceland. Selected populations from Denmark and Greenland were used for comparison. In addition, we tested whether the effects of isolation by distance could be seen in the Surtsey populations. Using two primer combinations, we obtained 173 AFLP markers from a total of 347 plant samples. The resulting binary matrix was then analysed statistically. The main results include the following: (i) Surtsey had the highest proportion of polymorphic markers as well as a comparatively high genetic diversity (55.5% proportion of polymorphic loci, PLP; 0.1974 H E ) and Denmark the lowest (31.8% PLP; 0.132 H E ), indicating rapid expansion during an early stage of population establishment on Surtsey and/or multiple origins of immigrants; (ii) the total genetic differentiation ( F ST ) among Surtsey (0.0714) and Heimaey (0.055) populations was less than half of that found among the mainland populations in Iceland (0.1747), indicating substantial gene flow on the islands; (iii) most of the genetic variation (79%, p < 0.001) was found within localities, possibly due to the outcrossing and subdioecious nature of the species; (iv) a significant genetic distance was found within Surtsey, among sites, and this appeared to correlate with the age of plant colonization; and (v) the genetic structure analysis indicated multiple colonization episodes on Surtsey, whereby H. peploides most likely immigrated from the nearby island of Heimaey and directly from the southern coast of Iceland. |
format |
Article in Journal/Newspaper |
author |
S. H. Árnason Ǽ. Th. Thórsson B. Magnússon M. Philipp H. Adsersen K. Anamthawat-Jónsson |
author_facet |
S. H. Árnason Ǽ. Th. Thórsson B. Magnússon M. Philipp H. Adsersen K. Anamthawat-Jónsson |
author_sort |
S. H. Árnason |
title |
Spatial genetic structure of the sea sandwort ( Honckenya peploides ) on Surtsey: an immigrant's journey |
title_short |
Spatial genetic structure of the sea sandwort ( Honckenya peploides ) on Surtsey: an immigrant's journey |
title_full |
Spatial genetic structure of the sea sandwort ( Honckenya peploides ) on Surtsey: an immigrant's journey |
title_fullStr |
Spatial genetic structure of the sea sandwort ( Honckenya peploides ) on Surtsey: an immigrant's journey |
title_full_unstemmed |
Spatial genetic structure of the sea sandwort ( Honckenya peploides ) on Surtsey: an immigrant's journey |
title_sort |
spatial genetic structure of the sea sandwort ( honckenya peploides ) on surtsey: an immigrant's journey |
publisher |
Copernicus Publications |
publishDate |
2014 |
url |
https://doi.org/10.5194/bg-11-6495-2014 https://doaj.org/article/de5430ac1ea64c3a8a14e6f05b0990f0 |
long_lat |
ENVELOPE(-22.486,-22.486,65.099,65.099) ENVELOPE(-20.608,-20.608,63.301,63.301) |
geographic |
Greenland Heimaey Surtsey |
geographic_facet |
Greenland Heimaey Surtsey |
genre |
Greenland Heimaey Honckenya peploides Iceland Surtsey |
genre_facet |
Greenland Heimaey Honckenya peploides Iceland Surtsey |
op_source |
Biogeosciences, Vol 11, Iss 22, Pp 6495-6507 (2014) |
op_relation |
http://www.biogeosciences.net/11/6495/2014/bg-11-6495-2014.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 1726-4170 1726-4189 doi:10.5194/bg-11-6495-2014 https://doaj.org/article/de5430ac1ea64c3a8a14e6f05b0990f0 |
op_doi |
https://doi.org/10.5194/bg-11-6495-2014 |
container_title |
Biogeosciences |
container_volume |
11 |
container_issue |
22 |
container_start_page |
6495 |
op_container_end_page |
6507 |
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1766020073797976064 |