Phylogeography of Populus alba (L.) and Populus tremula (L.) in Central Europe: secondary contact and hybridisation during recolonisation from disconnected refugia
The central aim of this paper is to clarify the picture of postglacial recolonisation and the reconstruction of refugia of Populus alba (L.) and Populus tremula (L.) in the light of hybridisation of the two species. We focussed our study on Central and Southeastern Europe including reference samples...
Main Authors: | , , |
---|---|
Language: | English |
Published: |
2010
|
Subjects: | |
Online Access: | http://doc.rero.ch/record/18171/files/lexer_ppp.pdf http://doc.rero.ch/record/18171/files/lexer_ppp_sm1.pdf http://doc.rero.ch/record/18171/files/lexer_ppp_sm2.pdf http://doc.rero.ch/record/18171/files/lexer_ppp_sm3.pdf |
id |
ftreroch:oai:doc.rero.ch:20100507110345-LD |
---|---|
record_format |
openpolar |
spelling |
ftreroch:oai:doc.rero.ch:20100507110345-LD 2023-05-15T16:38:18+02:00 Phylogeography of Populus alba (L.) and Populus tremula (L.) in Central Europe: secondary contact and hybridisation during recolonisation from disconnected refugia Fussi, Barbara Lexer, Christian Heinze, Berthold 2010-05-07T09:24:04Z http://doc.rero.ch/record/18171/files/lexer_ppp.pdf http://doc.rero.ch/record/18171/files/lexer_ppp_sm1.pdf http://doc.rero.ch/record/18171/files/lexer_ppp_sm2.pdf http://doc.rero.ch/record/18171/files/lexer_ppp_sm3.pdf eng eng http://doc.rero.ch/record/18171/files/lexer_ppp.pdf http://doc.rero.ch/record/18171/files/lexer_ppp_sm1.pdf http://doc.rero.ch/record/18171/files/lexer_ppp_sm2.pdf http://doc.rero.ch/record/18171/files/lexer_ppp_sm3.pdf 2010 ftreroch 2023-02-16T17:23:33Z The central aim of this paper is to clarify the picture of postglacial recolonisation and the reconstruction of refugia of Populus alba (L.) and Populus tremula (L.) in the light of hybridisation of the two species. We focussed our study on Central and Southeastern Europe including reference samples from Spain, Sweden and Northern Africa.We investigated 414 individuals of 26 populations using restriction fragment length polymorphisms (PCR-RFLPs) in six maternally inherited chloroplast markers. Altogether, 57 haplotypes were analysed of which four indicated hybridisation events in the past. Phylogeographic structure was found for P. alba with low diversity in Eastern Europe versus high diversity in Italy and Central Europe. A lack of phylogeographic structure was assessed for P. tremula as expected for a boreal forest tree, and diversity was evenly distributed in the studied populations. Two main refugia were identified for P. alba in Italy and Romania. A previously described hybrid zone between species in Central Europe turned out also to be a zone of contact between southern and eastern chloroplast lineages in P. alba. In contrast, P. tremula recolonised its present habitats in Central Europe from several refugia near the former ice cap. We assume separate disconnected refugia for P. alba and P. tremula and suggest an immigration scenario involving the mixing of colonisation routes and interspecific introgression to be responsible for the observed patterns. Other/Unknown Material Ice cap RERO DOC Digital Library |
institution |
Open Polar |
collection |
RERO DOC Digital Library |
op_collection_id |
ftreroch |
language |
English |
description |
The central aim of this paper is to clarify the picture of postglacial recolonisation and the reconstruction of refugia of Populus alba (L.) and Populus tremula (L.) in the light of hybridisation of the two species. We focussed our study on Central and Southeastern Europe including reference samples from Spain, Sweden and Northern Africa.We investigated 414 individuals of 26 populations using restriction fragment length polymorphisms (PCR-RFLPs) in six maternally inherited chloroplast markers. Altogether, 57 haplotypes were analysed of which four indicated hybridisation events in the past. Phylogeographic structure was found for P. alba with low diversity in Eastern Europe versus high diversity in Italy and Central Europe. A lack of phylogeographic structure was assessed for P. tremula as expected for a boreal forest tree, and diversity was evenly distributed in the studied populations. Two main refugia were identified for P. alba in Italy and Romania. A previously described hybrid zone between species in Central Europe turned out also to be a zone of contact between southern and eastern chloroplast lineages in P. alba. In contrast, P. tremula recolonised its present habitats in Central Europe from several refugia near the former ice cap. We assume separate disconnected refugia for P. alba and P. tremula and suggest an immigration scenario involving the mixing of colonisation routes and interspecific introgression to be responsible for the observed patterns. |
author |
Fussi, Barbara Lexer, Christian Heinze, Berthold |
spellingShingle |
Fussi, Barbara Lexer, Christian Heinze, Berthold Phylogeography of Populus alba (L.) and Populus tremula (L.) in Central Europe: secondary contact and hybridisation during recolonisation from disconnected refugia |
author_facet |
Fussi, Barbara Lexer, Christian Heinze, Berthold |
author_sort |
Fussi, Barbara |
title |
Phylogeography of Populus alba (L.) and Populus tremula (L.) in Central Europe: secondary contact and hybridisation during recolonisation from disconnected refugia |
title_short |
Phylogeography of Populus alba (L.) and Populus tremula (L.) in Central Europe: secondary contact and hybridisation during recolonisation from disconnected refugia |
title_full |
Phylogeography of Populus alba (L.) and Populus tremula (L.) in Central Europe: secondary contact and hybridisation during recolonisation from disconnected refugia |
title_fullStr |
Phylogeography of Populus alba (L.) and Populus tremula (L.) in Central Europe: secondary contact and hybridisation during recolonisation from disconnected refugia |
title_full_unstemmed |
Phylogeography of Populus alba (L.) and Populus tremula (L.) in Central Europe: secondary contact and hybridisation during recolonisation from disconnected refugia |
title_sort |
phylogeography of populus alba (l.) and populus tremula (l.) in central europe: secondary contact and hybridisation during recolonisation from disconnected refugia |
publishDate |
2010 |
url |
http://doc.rero.ch/record/18171/files/lexer_ppp.pdf http://doc.rero.ch/record/18171/files/lexer_ppp_sm1.pdf http://doc.rero.ch/record/18171/files/lexer_ppp_sm2.pdf http://doc.rero.ch/record/18171/files/lexer_ppp_sm3.pdf |
genre |
Ice cap |
genre_facet |
Ice cap |
op_relation |
http://doc.rero.ch/record/18171/files/lexer_ppp.pdf http://doc.rero.ch/record/18171/files/lexer_ppp_sm1.pdf http://doc.rero.ch/record/18171/files/lexer_ppp_sm2.pdf http://doc.rero.ch/record/18171/files/lexer_ppp_sm3.pdf |
_version_ |
1766028576072663040 |