Allozyme diversity and genetic structure of marginal and central populations of Corylus avellana L. (Betulaceae) in Europe
(2004) In Plant Systematics and Evolution 244(3-4). p.157-179- Abstract
- 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... (More)
- 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. (Less)
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https://lup.lub.lu.se/record/137514
- author
- Persson, Helena LU ; Widén, Björn LU ; Andersson, Stefan LU and Svensson, Linus
- organization
- publishing date
- 2004
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Plant Systematics and Evolution
- volume
- 244
- issue
- 3-4
- pages
- 157 - 179
- publisher
- Springer
- external identifiers
-
- wos:000220097500003
- scopus:1842524025
- ISSN
- 1615-6110
- DOI
- 10.1007/s00606-003-0073-3
- language
- English
- LU publication?
- yes
- id
- ca847ad8-ee76-4524-bdd4-d6d529c93a59 (old id 137514)
- date added to LUP
- 2016-04-01 12:36:46
- date last changed
- 2022-01-27 07:28:24
@article{ca847ad8-ee76-4524-bdd4-d6d529c93a59,
abstract = {{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.}},
author = {{Persson, Helena and Widén, Björn and Andersson, Stefan and Svensson, Linus}},
issn = {{1615-6110}},
language = {{eng}},
number = {{3-4}},
pages = {{157--179}},
publisher = {{Springer}},
series = {{Plant Systematics and Evolution}},
title = {{Allozyme diversity and genetic structure of marginal and central populations of Corylus avellana L. (Betulaceae) in Europe}},
url = {{http://dx.doi.org/10.1007/s00606-003-0073-3}},
doi = {{10.1007/s00606-003-0073-3}},
volume = {{244}},
year = {{2004}},
}