Postglacial colonization history reflects in the genetic structure of natural populations of Festuca rubra in Europe
We conducted a large‐scale population genetic survey of genetic diversity of the host grass Festuca rubra s.l., which fitness can be highly dependent on its symbiotic fungus Epichloë festucae, to evaluate genetic variation and population structure across the European range. The 27 studied population...
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ftpubmed:oai:pubmedcentral.nih.gov:6434542 2023-05-15T16:10:55+02:00 Postglacial colonization history reflects in the genetic structure of natural populations of Festuca rubra in Europe von Cräutlein, Maria Leinonen, Päivi H. Korpelainen, Helena Helander, Marjo Väre, Henry Saikkonen, Kari 2019-03-04 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6434542/ http://www.ncbi.nlm.nih.gov/pubmed/30962916 https://doi.org/10.1002/ece3.4997 en eng John Wiley and Sons Inc. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6434542/ http://www.ncbi.nlm.nih.gov/pubmed/30962916 http://dx.doi.org/10.1002/ece3.4997 © 2019 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. This is an open access article under the terms of the http://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 Original Research Text 2019 ftpubmed https://doi.org/10.1002/ece3.4997 2019-04-14T00:14:59Z We conducted a large‐scale population genetic survey of genetic diversity of the host grass Festuca rubra s.l., which fitness can be highly dependent on its symbiotic fungus Epichloë festucae, to evaluate genetic variation and population structure across the European range. The 27 studied populations have previously been found to differ in frequencies of occurrence of the symbiotic fungus E. festucae and ploidy levels. As predicted, we found decreased genetic diversity in previously glaciated areas in comparison with nonglaciated regions and discovered three major maternal genetic groups: southern, northeastern, and northwestern Europe. Interestingly, host populations from Greenland were genetically similar to those from the Faroe Islands and Iceland, suggesting gene flow also between those areas. The level of variation among populations within regions is evidently highly dependent on the postglacial colonization history, in particular on the number of independent long‐distance seed colonization events. Yet, also anthropogenic effects may have affected the population structure in F. rubra. We did not observe higher fungal infection rates in grass populations with lower levels of genetic variability. In fact, the fungal infection rates of E. festucae in relation to genetic variability of the host populations varied widely among geographical areas, which indicate differences in population histories due to colonization events and possible costs of systemic fungi in harsh environmental conditions. We found that the plants of different ploidy levels are genetically closely related within geographic areas indicating independent formation of polyploids in different maternal lineages. Text Faroe Islands Greenland Iceland PubMed Central (PMC) Faroe Islands Greenland Ecology and Evolution 9 6 3661 3674 |
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Original Research von Cräutlein, Maria Leinonen, Päivi H. Korpelainen, Helena Helander, Marjo Väre, Henry Saikkonen, Kari Postglacial colonization history reflects in the genetic structure of natural populations of Festuca rubra in Europe |
topic_facet |
Original Research |
description |
We conducted a large‐scale population genetic survey of genetic diversity of the host grass Festuca rubra s.l., which fitness can be highly dependent on its symbiotic fungus Epichloë festucae, to evaluate genetic variation and population structure across the European range. The 27 studied populations have previously been found to differ in frequencies of occurrence of the symbiotic fungus E. festucae and ploidy levels. As predicted, we found decreased genetic diversity in previously glaciated areas in comparison with nonglaciated regions and discovered three major maternal genetic groups: southern, northeastern, and northwestern Europe. Interestingly, host populations from Greenland were genetically similar to those from the Faroe Islands and Iceland, suggesting gene flow also between those areas. The level of variation among populations within regions is evidently highly dependent on the postglacial colonization history, in particular on the number of independent long‐distance seed colonization events. Yet, also anthropogenic effects may have affected the population structure in F. rubra. We did not observe higher fungal infection rates in grass populations with lower levels of genetic variability. In fact, the fungal infection rates of E. festucae in relation to genetic variability of the host populations varied widely among geographical areas, which indicate differences in population histories due to colonization events and possible costs of systemic fungi in harsh environmental conditions. We found that the plants of different ploidy levels are genetically closely related within geographic areas indicating independent formation of polyploids in different maternal lineages. |
format |
Text |
author |
von Cräutlein, Maria Leinonen, Päivi H. Korpelainen, Helena Helander, Marjo Väre, Henry Saikkonen, Kari |
author_facet |
von Cräutlein, Maria Leinonen, Päivi H. Korpelainen, Helena Helander, Marjo Väre, Henry Saikkonen, Kari |
author_sort |
von Cräutlein, Maria |
title |
Postglacial colonization history reflects in the genetic structure of natural populations of Festuca rubra in Europe |
title_short |
Postglacial colonization history reflects in the genetic structure of natural populations of Festuca rubra in Europe |
title_full |
Postglacial colonization history reflects in the genetic structure of natural populations of Festuca rubra in Europe |
title_fullStr |
Postglacial colonization history reflects in the genetic structure of natural populations of Festuca rubra in Europe |
title_full_unstemmed |
Postglacial colonization history reflects in the genetic structure of natural populations of Festuca rubra in Europe |
title_sort |
postglacial colonization history reflects in the genetic structure of natural populations of festuca rubra in europe |
publisher |
John Wiley and Sons Inc. |
publishDate |
2019 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6434542/ http://www.ncbi.nlm.nih.gov/pubmed/30962916 https://doi.org/10.1002/ece3.4997 |
geographic |
Faroe Islands Greenland |
geographic_facet |
Faroe Islands Greenland |
genre |
Faroe Islands Greenland Iceland |
genre_facet |
Faroe Islands Greenland Iceland |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6434542/ http://www.ncbi.nlm.nih.gov/pubmed/30962916 http://dx.doi.org/10.1002/ece3.4997 |
op_rights |
© 2019 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. This is an open access article under the terms of the http://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/ece3.4997 |
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Ecology and Evolution |
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9 |
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6 |
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3661 |
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3674 |
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