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Extensive polyploid hybridization within the fern genus Woodsia
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Organismal Biology, Systematic Biology.
Department of Biology, Duke University, , Durham, North Carolina, USA.
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Organismal Biology, Systematic Biology.
2013 (English)Conference paper, Poster (with or without abstract) (Other academic)
Abstract [en]

In the process of resolving the phylogeny of the cosmopolitan Woodsia ferns we have conducted the most comprehensive nuclear phylogeny of ferns. We have sequenced two nuclear regions (pgiC and RPA2) on up to 175 different specimen corresponding to some 30 species. In addition to the nuclear markers we have also sequenced 5 chloroplast regions (matK, rbcL, atpA, atpB and trnGR).

The results show an extensive hybridization and chromosome doubling within the genus Woodsia. As many as 19 out of the 32 species we identify in the phylogeny are polyploids.

The Scandinavian species Woodsia alpina is the allopolyploid hybrid of Woodsia ilvensis x Woodsia glabella. In this study we show that the hybrid has originated multiple times, and also that both parents have, at least once each, acted as the donor of the maternally inherited chloroplast genome.

An extreme hybrid is Woodsia Ă—abbeae. It is an hybrid between the two species Woodsia ilvensis and Woodsia oregana ssp. cathcartiana separated by as much as 30-50 million years.

Place, publisher, year, edition, pages
2013.
National Category
Biological Systematics
Research subject
Systematic Botany
Identifiers
URN: urn:nbn:se:uu:diva-213742OAI: oai:DiVA.org:uu-213742DiVA: diva2:683342
Conference
ForBio Annual Meeting, Oslo, 4-6 March, 2013
Available from: 2014-01-03 Created: 2014-01-03 Last updated: 2015-11-28

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Larsson, AndersKorall, Petra

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