Seed dormancy varies widely among Arabidopsis thaliana populations both between and within Fennoscandia and Italy
Abstract The timing of germination is a key life‐history trait in plants, which is strongly affected by the strength of seed dormancy. Continental‐wide genetic variation in seed dormancy has been related to differences in climate and the timing of conditions suitable for seedling establishment. Howe...
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crwiley:10.1002/ece3.8670 2024-06-02T08:06:28+00:00 Seed dormancy varies widely among Arabidopsis thaliana populations both between and within Fennoscandia and Italy Zacchello, Giulia Bomers, Svenja Böhme, Cecilia Postma, Froukje M. Ågren, Jon Vetenskapsrådet 2022 http://dx.doi.org/10.1002/ece3.8670 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.8670 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ece3.8670 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Ecology and Evolution volume 12, issue 3 ISSN 2045-7758 2045-7758 journal-article 2022 crwiley https://doi.org/10.1002/ece3.8670 2024-05-06T07:04:49Z Abstract The timing of germination is a key life‐history trait in plants, which is strongly affected by the strength of seed dormancy. Continental‐wide genetic variation in seed dormancy has been related to differences in climate and the timing of conditions suitable for seedling establishment. However, for predictions of adaptive potential and consequences of climatic change, information is needed regarding the extent to which seed dormancy varies within climatic regions and the factors driving such variation. We quantified dormancy of seeds produced by 17 Italian and 28 Fennoscandian populations of Arabidopsis thaliana when grown in the greenhouse and at two field sites in Italy and Sweden. To identify possible drivers of among‐population variation in seed dormancy, we examined the relationship between seed dormancy and climate at the site of population origin, and between seed dormancy and flowering time. Seed dormancy was on average stronger in the Italian compared to the Fennoscandian populations, but also varied widely within both regions. Estimates of seed dormancy in the three maternal environments were positively correlated. Among Fennoscandian populations, seed dormancy tended to increase with increasing summer temperature and decreasing precipitation at the site of population origin. In the smaller sample of Italian populations, no significant association was detected between mean seed dormancy and climate at the site of origin. The correlation between population mean seed dormancy and flowering time was weak and not statistically significant within regions. The correlation between seed dormancy and climatic factors in Fennoscandia suggests that at least some of the among‐population variation is adaptive and that climate change will affect selection on this trait. The weak correlation between population mean seed dormancy and flowering time indicates that the two traits can evolve independently. Article in Journal/Newspaper Fennoscandia Fennoscandian Wiley Online Library Ecology and Evolution 12 3 |
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English |
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Abstract The timing of germination is a key life‐history trait in plants, which is strongly affected by the strength of seed dormancy. Continental‐wide genetic variation in seed dormancy has been related to differences in climate and the timing of conditions suitable for seedling establishment. However, for predictions of adaptive potential and consequences of climatic change, information is needed regarding the extent to which seed dormancy varies within climatic regions and the factors driving such variation. We quantified dormancy of seeds produced by 17 Italian and 28 Fennoscandian populations of Arabidopsis thaliana when grown in the greenhouse and at two field sites in Italy and Sweden. To identify possible drivers of among‐population variation in seed dormancy, we examined the relationship between seed dormancy and climate at the site of population origin, and between seed dormancy and flowering time. Seed dormancy was on average stronger in the Italian compared to the Fennoscandian populations, but also varied widely within both regions. Estimates of seed dormancy in the three maternal environments were positively correlated. Among Fennoscandian populations, seed dormancy tended to increase with increasing summer temperature and decreasing precipitation at the site of population origin. In the smaller sample of Italian populations, no significant association was detected between mean seed dormancy and climate at the site of origin. The correlation between population mean seed dormancy and flowering time was weak and not statistically significant within regions. The correlation between seed dormancy and climatic factors in Fennoscandia suggests that at least some of the among‐population variation is adaptive and that climate change will affect selection on this trait. The weak correlation between population mean seed dormancy and flowering time indicates that the two traits can evolve independently. |
author2 |
Vetenskapsrådet |
format |
Article in Journal/Newspaper |
author |
Zacchello, Giulia Bomers, Svenja Böhme, Cecilia Postma, Froukje M. Ågren, Jon |
spellingShingle |
Zacchello, Giulia Bomers, Svenja Böhme, Cecilia Postma, Froukje M. Ågren, Jon Seed dormancy varies widely among Arabidopsis thaliana populations both between and within Fennoscandia and Italy |
author_facet |
Zacchello, Giulia Bomers, Svenja Böhme, Cecilia Postma, Froukje M. Ågren, Jon |
author_sort |
Zacchello, Giulia |
title |
Seed dormancy varies widely among Arabidopsis thaliana populations both between and within Fennoscandia and Italy |
title_short |
Seed dormancy varies widely among Arabidopsis thaliana populations both between and within Fennoscandia and Italy |
title_full |
Seed dormancy varies widely among Arabidopsis thaliana populations both between and within Fennoscandia and Italy |
title_fullStr |
Seed dormancy varies widely among Arabidopsis thaliana populations both between and within Fennoscandia and Italy |
title_full_unstemmed |
Seed dormancy varies widely among Arabidopsis thaliana populations both between and within Fennoscandia and Italy |
title_sort |
seed dormancy varies widely among arabidopsis thaliana populations both between and within fennoscandia and italy |
publisher |
Wiley |
publishDate |
2022 |
url |
http://dx.doi.org/10.1002/ece3.8670 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.8670 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ece3.8670 |
genre |
Fennoscandia Fennoscandian |
genre_facet |
Fennoscandia Fennoscandian |
op_source |
Ecology and Evolution volume 12, issue 3 ISSN 2045-7758 2045-7758 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1002/ece3.8670 |
container_title |
Ecology and Evolution |
container_volume |
12 |
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3 |
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1800751412459601920 |