Seed dormancy varies widely among Arabidopsis thaliana populations both between and within Fennoscandia and Italy
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...
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ftpubmed:oai:pubmedcentral.nih.gov:8888264 2023-05-15T16:11:47+02:00 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 2022-03-01 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8888264/ http://www.ncbi.nlm.nih.gov/pubmed/35261752 https://doi.org/10.1002/ece3.8670 en eng John Wiley and Sons Inc. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8888264/ http://www.ncbi.nlm.nih.gov/pubmed/35261752 http://dx.doi.org/10.1002/ece3.8670 © 2022 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. CC-BY Ecol Evol Research Articles Text 2022 ftpubmed https://doi.org/10.1002/ece3.8670 2022-03-13T01:34:06Z 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. Text Fennoscandia Fennoscandian PubMed Central (PMC) Ecology and Evolution 12 3 |
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Research Articles 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 |
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Research Articles |
description |
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. |
format |
Text |
author |
Zacchello, Giulia Bomers, Svenja Böhme, Cecilia Postma, Froukje M. Ågren, Jon |
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 |
John Wiley and Sons Inc. |
publishDate |
2022 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8888264/ http://www.ncbi.nlm.nih.gov/pubmed/35261752 https://doi.org/10.1002/ece3.8670 |
genre |
Fennoscandia Fennoscandian |
genre_facet |
Fennoscandia Fennoscandian |
op_source |
Ecol Evol |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8888264/ http://www.ncbi.nlm.nih.gov/pubmed/35261752 http://dx.doi.org/10.1002/ece3.8670 |
op_rights |
© 2022 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1002/ece3.8670 |
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Ecology and Evolution |
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12 |
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3 |
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1765996976051060736 |