Genetic differentiation in the bladder campions, Silene vulgaris and S. uniflora (Caryophyllaceae), in Sweden
Runyeon, Helena LU and Prentice, Honor C. LU
(1997)
In Biological Journal of the Linnean Society
61(4).
p.559-584
- Abstract
Allozyme variation was studied in Swedish populations of Silene vulgaris (a widespread weed), S. uniflora ssp. uniflora (restricted to coastal habitats) and S. uniflora ssp. petraea (endemic to Sweden and confined to open limestone habitats). The taxa are diploid, gynodioecious, perennial herbs and showed high levels of within-taxon and within-population gene diversity at four polymorphic loci. Within-taxon diversity was highest (H(tax) = 0.52) in S. vulgaris and lowest (H(tax)= 0.36) in S. uniflora ssp. uniflora. The weedy S. vulgaris has more alleles than either of the other two taxa and 5 out of a total of 27 alleles are unique to S. vulgaris. Most of the gene diversity within each of the taxa is accounted for by within-population... (More)
Allozyme variation was studied in Swedish populations of Silene vulgaris (a widespread weed), S. uniflora ssp. uniflora (restricted to coastal habitats) and S. uniflora ssp. petraea (endemic to Sweden and confined to open limestone habitats). The taxa are diploid, gynodioecious, perennial herbs and showed high levels of within-taxon and within-population gene diversity at four polymorphic loci. Within-taxon diversity was highest (H(tax) = 0.52) in S. vulgaris and lowest (H(tax)= 0.36) in S. uniflora ssp. uniflora. The weedy S. vulgaris has more alleles than either of the other two taxa and 5 out of a total of 27 alleles are unique to S. vulgaris. Most of the gene diversity within each of the taxa is accounted for by within-population diversity. The between-population component of diversity is 10% in S. vulgaris, and 24% and 5%, respectively, in S. uniflora ssp. uniflora and ssp. petraea. Hybrids may occur between S. vulgaris and S. uniflora, but introgression is limited by the species' ecology. Neither allozyme nor distributional data support the suggestion that ssp. petraea is a recent hybrid between S. vulgaris and S. uniflora ssp. uniflora, although an older hybrid origin for ssp. petraea is possible. Patterns of allele frequency variation suggest that there has been some historical gene flow between taxa, outside their present areas of sympatry. It is likely that the two subspecies of S. uniflora, which occur in naturally open habitats, were able to colonize Sweden during the Late Glacial or early post-glacial, whereas S. vulgaris followed the spread of agriculture into Sweden.
(Less)
- author
- Runyeon, Helena
LU
and Prentice, Honor C.
LU
- organization
- publishing date
- 1997-08
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Allele frequencies, Allozymes, Closely related taxa, Gene diversity, Geographic variation, Immigration history
- in
- Biological Journal of the Linnean Society
- volume
- 61
- issue
- 4
- pages
- 559 - 584
- publisher
- Oxford University Press
- external identifiers
-
- scopus:0030881368
- ISSN
- 0024-4066
- DOI
- 10.1006/bijl.1997.0140
- language
- English
- LU publication?
- yes
- additional info
- Funding Information: We are grateful to Lars-König Königsson for discussions on the Quaternary history of the southern Baltic area and to Mikael Hedrén for his constructive comments on the manuscript. We would also like to thank Bo Göran Johansson and Bengt Jonsell for providing information on localities of Silene populations, Bertil Blohm for taking care of Silene plants in the greenhouse, Robert Lager and Håkan Tegelström for practical help with fieldwork. The Uppsala University Ecological Research Station at Ölands Skogsby provided a base for much of the field and laboratory work. The study was funded by grants from the Swedish Natural Science Research Council and the Swedish Council for Agricultural and Forestry Research (to HCP), by grants from the Uppsala University Ecological Research Station (to both authors), and by grants from ‘Lennanders stipendium’, ‘Th. Kroks donation’ and the ‘Hierta-Retzius stipendiefond’ (to HR). Copyright: Copyright 2017 Elsevier B.V., All rights reserved.
- id
- 538847be-0633-46d5-aa5d-7029153c49a6
- date added to LUP
- 2021-04-21 14:35:00
- date last changed
- 2022-02-01 21:29:39
@article{538847be-0633-46d5-aa5d-7029153c49a6,
abstract = {{<p>Allozyme variation was studied in Swedish populations of Silene vulgaris (a widespread weed), S. uniflora ssp. uniflora (restricted to coastal habitats) and S. uniflora ssp. petraea (endemic to Sweden and confined to open limestone habitats). The taxa are diploid, gynodioecious, perennial herbs and showed high levels of within-taxon and within-population gene diversity at four polymorphic loci. Within-taxon diversity was highest (H(tax) = 0.52) in S. vulgaris and lowest (H(tax)= 0.36) in S. uniflora ssp. uniflora. The weedy S. vulgaris has more alleles than either of the other two taxa and 5 out of a total of 27 alleles are unique to S. vulgaris. Most of the gene diversity within each of the taxa is accounted for by within-population diversity. The between-population component of diversity is 10% in S. vulgaris, and 24% and 5%, respectively, in S. uniflora ssp. uniflora and ssp. petraea. Hybrids may occur between S. vulgaris and S. uniflora, but introgression is limited by the species' ecology. Neither allozyme nor distributional data support the suggestion that ssp. petraea is a recent hybrid between S. vulgaris and S. uniflora ssp. uniflora, although an older hybrid origin for ssp. petraea is possible. Patterns of allele frequency variation suggest that there has been some historical gene flow between taxa, outside their present areas of sympatry. It is likely that the two subspecies of S. uniflora, which occur in naturally open habitats, were able to colonize Sweden during the Late Glacial or early post-glacial, whereas S. vulgaris followed the spread of agriculture into Sweden.</p>}},
author = {{Runyeon, Helena and Prentice, Honor C.}},
issn = {{0024-4066}},
keywords = {{Allele frequencies; Allozymes; Closely related taxa; Gene diversity; Geographic variation; Immigration history}},
language = {{eng}},
number = {{4}},
pages = {{559--584}},
publisher = {{Oxford University Press}},
series = {{Biological Journal of the Linnean Society}},
title = {{Genetic differentiation in the bladder campions, Silene vulgaris and S. uniflora (Caryophyllaceae), in Sweden}},
url = {{http://dx.doi.org/10.1006/bijl.1997.0140}},
doi = {{10.1006/bijl.1997.0140}},
volume = {{61}},
year = {{1997}},
}