Allozyme diversity and genetic structure of marginal and central populations of Corylus avellana L. (Betulaceae) in Europe
Corylus avellana L. (hazel, Betulaceae) is a long-lived, widespread shrub in Europe, having its northern range margin in Fennoscandia and a postglacial history involving range-expansion from refugial areas in southern Europe. In this study, we tested for a relationship between marginality and low wi...
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ftulundlup:oai:lup.lub.lu.se:ca847ad8-ee76-4524-bdd4-d6d529c93a59 2023-05-15T16:12:02+02:00 Allozyme diversity and genetic structure of marginal and central populations of Corylus avellana L. (Betulaceae) in Europe Persson, Helena Widén, Björn Andersson, Stefan Svensson, Linus 2004 https://lup.lub.lu.se/record/137514 https://doi.org/10.1007/s00606-003-0073-3 eng eng Springer https://lup.lub.lu.se/record/137514 http://dx.doi.org/10.1007/s00606-003-0073-3 wos:000220097500003 scopus:1842524025 Plant Systematics and Evolution; 244(3-4), pp 157-179 (2004) ISSN: 1615-6110 Ecology contributiontojournal/article info:eu-repo/semantics/article text 2004 ftulundlup https://doi.org/10.1007/s00606-003-0073-3 2023-02-01T23:33:10Z Corylus avellana L. (hazel, Betulaceae) is a long-lived, widespread shrub in Europe, having its northern range margin in Fennoscandia and a postglacial history involving range-expansion from refugial areas in southern Europe. In this study, we tested for a relationship between marginality and low within-population genetic diversity by assessing patterns of variation at 14 putatively neutral allozyme loci (comprising 43 putative alleles) within and between 40 natural populations of C. avellana along a north-south transect in Europe. Geographically marginal populations (central Sweden) showed lower levels of within-population diversity than populations in more central regions, as indicated by significant negative correlations between latitude and the percentage of polymorphic loci (r(S)=-0.47, P < 0.001), the average number of alleles per locus (r(S)=-0.65, P < 0.001), the expected heterozygosity (r(S)=-0.19, P < 0.05), and the proportion of distinguishable genotypes (r(S)=-0.56, P < 0.001). These patterns, combined with the unusually high between-population component of gene diversity (G(ST)=19.7%) and allelic richness (A(ST)=24%) in the marginal region, can be attributed to historical bottlenecks during the species' postglacial range-expansion, but may also reflect a history of genetic drift in the small, isolated populations occupying the marginal region. Information on the spatial distribution of genotypes provide further support for a role of vegetative reproduction (layering) in the structuring of genetic variation within populations. Article in Journal/Newspaper Fennoscandia Lund University Publications (LUP) Plant Systematics and Evolution 244 3-4 157 179 |
institution |
Open Polar |
collection |
Lund University Publications (LUP) |
op_collection_id |
ftulundlup |
language |
English |
topic |
Ecology |
spellingShingle |
Ecology Persson, Helena Widén, Björn Andersson, Stefan Svensson, Linus Allozyme diversity and genetic structure of marginal and central populations of Corylus avellana L. (Betulaceae) in Europe |
topic_facet |
Ecology |
description |
Corylus avellana L. (hazel, Betulaceae) is a long-lived, widespread shrub in Europe, having its northern range margin in Fennoscandia and a postglacial history involving range-expansion from refugial areas in southern Europe. In this study, we tested for a relationship between marginality and low within-population genetic diversity by assessing patterns of variation at 14 putatively neutral allozyme loci (comprising 43 putative alleles) within and between 40 natural populations of C. avellana along a north-south transect in Europe. Geographically marginal populations (central Sweden) showed lower levels of within-population diversity than populations in more central regions, as indicated by significant negative correlations between latitude and the percentage of polymorphic loci (r(S)=-0.47, P < 0.001), the average number of alleles per locus (r(S)=-0.65, P < 0.001), the expected heterozygosity (r(S)=-0.19, P < 0.05), and the proportion of distinguishable genotypes (r(S)=-0.56, P < 0.001). These patterns, combined with the unusually high between-population component of gene diversity (G(ST)=19.7%) and allelic richness (A(ST)=24%) in the marginal region, can be attributed to historical bottlenecks during the species' postglacial range-expansion, but may also reflect a history of genetic drift in the small, isolated populations occupying the marginal region. Information on the spatial distribution of genotypes provide further support for a role of vegetative reproduction (layering) in the structuring of genetic variation within populations. |
format |
Article in Journal/Newspaper |
author |
Persson, Helena Widén, Björn Andersson, Stefan Svensson, Linus |
author_facet |
Persson, Helena Widén, Björn Andersson, Stefan Svensson, Linus |
author_sort |
Persson, Helena |
title |
Allozyme diversity and genetic structure of marginal and central populations of Corylus avellana L. (Betulaceae) in Europe |
title_short |
Allozyme diversity and genetic structure of marginal and central populations of Corylus avellana L. (Betulaceae) in Europe |
title_full |
Allozyme diversity and genetic structure of marginal and central populations of Corylus avellana L. (Betulaceae) in Europe |
title_fullStr |
Allozyme diversity and genetic structure of marginal and central populations of Corylus avellana L. (Betulaceae) in Europe |
title_full_unstemmed |
Allozyme diversity and genetic structure of marginal and central populations of Corylus avellana L. (Betulaceae) in Europe |
title_sort |
allozyme diversity and genetic structure of marginal and central populations of corylus avellana l. (betulaceae) in europe |
publisher |
Springer |
publishDate |
2004 |
url |
https://lup.lub.lu.se/record/137514 https://doi.org/10.1007/s00606-003-0073-3 |
genre |
Fennoscandia |
genre_facet |
Fennoscandia |
op_source |
Plant Systematics and Evolution; 244(3-4), pp 157-179 (2004) ISSN: 1615-6110 |
op_relation |
https://lup.lub.lu.se/record/137514 http://dx.doi.org/10.1007/s00606-003-0073-3 wos:000220097500003 scopus:1842524025 |
op_doi |
https://doi.org/10.1007/s00606-003-0073-3 |
container_title |
Plant Systematics and Evolution |
container_volume |
244 |
container_issue |
3-4 |
container_start_page |
157 |
op_container_end_page |
179 |
_version_ |
1765997267030900736 |