Hybridization between Pyrola grandifloraand Pyrola minorin West Greenland: a tension zone maintained by clonality
Interspecific hybridization may lead to novel hybrid lineages and transfer of genetic material, possibly enabling species to expand into new habitats. Alternatively, hybrids may be inviable or sterile, constraining movement of parental species and genes into each others range. Pyrola minor (L.) and...
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Canadian Science Publishing
2012
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Online Access: | http://dx.doi.org/10.1139/b2012-083 http://www.nrcresearchpress.com/doi/full-xml/10.1139/b2012-083 http://www.nrcresearchpress.com/doi/pdf/10.1139/b2012-083 |
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crcansciencepubl:10.1139/b2012-083 2024-05-19T07:41:15+00:00 Hybridization between Pyrola grandifloraand Pyrola minorin West Greenland: a tension zone maintained by clonality Hauser, Thure P. Bohr, Marietta Boje Dienst, Dorte Nygaard Nielsen, Knud Brian Philipp, Marianne 2012 http://dx.doi.org/10.1139/b2012-083 http://www.nrcresearchpress.com/doi/full-xml/10.1139/b2012-083 http://www.nrcresearchpress.com/doi/pdf/10.1139/b2012-083 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Botany volume 90, issue 10, page 1036-1047 ISSN 1916-2790 1916-2804 journal-article 2012 crcansciencepubl https://doi.org/10.1139/b2012-083 2024-05-02T06:51:25Z Interspecific hybridization may lead to novel hybrid lineages and transfer of genetic material, possibly enabling species to expand into new habitats. Alternatively, hybrids may be inviable or sterile, constraining movement of parental species and genes into each others range. Pyrola minor (L.) and Pyrola grandiflora (Rad.) hybridize on Disko Island in Greenland. A recent study found most hybrids to be F 1 plants produced by P. minor mothers. Here, we test if later generation hybrids are indeed absent in a larger sample, using morphological and molecular markers. We further test if unidirectional hybridization is due to reproductive barriers. Intermediate plants were all F 1 hybrids from P. minor mother plants. Our analyses indicate that hybrids originated from few hybridization events and have been maintained by clonal reproduction since then. Barriers to pollen flow between the species result from a combination of few pollinators, different flower morphology and phenology, high proportions of abnormal pollen in hybrids, and reduced pollen tube growth of heterospecific and hybrid pollen. In general, pollen from P. grandiflora grew better than pollen from P. minor, which may explain the unidirectional hybridization. Hybridization between P. grandiflora and P. minor therefore seems to operate like a tension zone in which F 1 hybrids are maintained by clonal propagation. Article in Journal/Newspaper Greenland Canadian Science Publishing Botany 90 10 1036 1047 |
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Canadian Science Publishing |
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crcansciencepubl |
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English |
description |
Interspecific hybridization may lead to novel hybrid lineages and transfer of genetic material, possibly enabling species to expand into new habitats. Alternatively, hybrids may be inviable or sterile, constraining movement of parental species and genes into each others range. Pyrola minor (L.) and Pyrola grandiflora (Rad.) hybridize on Disko Island in Greenland. A recent study found most hybrids to be F 1 plants produced by P. minor mothers. Here, we test if later generation hybrids are indeed absent in a larger sample, using morphological and molecular markers. We further test if unidirectional hybridization is due to reproductive barriers. Intermediate plants were all F 1 hybrids from P. minor mother plants. Our analyses indicate that hybrids originated from few hybridization events and have been maintained by clonal reproduction since then. Barriers to pollen flow between the species result from a combination of few pollinators, different flower morphology and phenology, high proportions of abnormal pollen in hybrids, and reduced pollen tube growth of heterospecific and hybrid pollen. In general, pollen from P. grandiflora grew better than pollen from P. minor, which may explain the unidirectional hybridization. Hybridization between P. grandiflora and P. minor therefore seems to operate like a tension zone in which F 1 hybrids are maintained by clonal propagation. |
format |
Article in Journal/Newspaper |
author |
Hauser, Thure P. Bohr, Marietta Boje Dienst, Dorte Nygaard Nielsen, Knud Brian Philipp, Marianne |
spellingShingle |
Hauser, Thure P. Bohr, Marietta Boje Dienst, Dorte Nygaard Nielsen, Knud Brian Philipp, Marianne Hybridization between Pyrola grandifloraand Pyrola minorin West Greenland: a tension zone maintained by clonality |
author_facet |
Hauser, Thure P. Bohr, Marietta Boje Dienst, Dorte Nygaard Nielsen, Knud Brian Philipp, Marianne |
author_sort |
Hauser, Thure P. |
title |
Hybridization between Pyrola grandifloraand Pyrola minorin West Greenland: a tension zone maintained by clonality |
title_short |
Hybridization between Pyrola grandifloraand Pyrola minorin West Greenland: a tension zone maintained by clonality |
title_full |
Hybridization between Pyrola grandifloraand Pyrola minorin West Greenland: a tension zone maintained by clonality |
title_fullStr |
Hybridization between Pyrola grandifloraand Pyrola minorin West Greenland: a tension zone maintained by clonality |
title_full_unstemmed |
Hybridization between Pyrola grandifloraand Pyrola minorin West Greenland: a tension zone maintained by clonality |
title_sort |
hybridization between pyrola grandifloraand pyrola minorin west greenland: a tension zone maintained by clonality |
publisher |
Canadian Science Publishing |
publishDate |
2012 |
url |
http://dx.doi.org/10.1139/b2012-083 http://www.nrcresearchpress.com/doi/full-xml/10.1139/b2012-083 http://www.nrcresearchpress.com/doi/pdf/10.1139/b2012-083 |
genre |
Greenland |
genre_facet |
Greenland |
op_source |
Botany volume 90, issue 10, page 1036-1047 ISSN 1916-2790 1916-2804 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/b2012-083 |
container_title |
Botany |
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90 |
container_issue |
10 |
container_start_page |
1036 |
op_container_end_page |
1047 |
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1799480840852340736 |