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The Origin of the Hawaiian endemic Silene species
Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Department of Evolution, Genomics and Systematics. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Department of Evolution, Genomics and Systematics, Systematic Botany. Systematisk botanik.
Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Department of Evolution, Genomics and Systematics. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Department of Evolution, Genomics and Systematics, Systematic Botany. Systematisk botanik.
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2005 (English)In: Abstracts - XVII International Botanical Congress: Vienna, Austria, 2005Conference paper, Published paper (Other scientific)
Abstract [en]

Geographically, one could expect an Asian origin for species from the Hawaiian Islands. Despite this, a number of Hawaiian taxa have been shown to have their closest relatives on the North American continent. The seven species of Silene endemic to Hawaii were placed in a section with two Japanese Silene in the latest global revision of the genus. They were thought to be the result of two colonizations, one for the shrubby species and one for the remaining herbaceous ones. Our results, based on DNA sequences from the plastid genome, ITS, and the nuclear low copy number gene RPB2 of five of the seven species (representing both of the putative colonizations) instead strongly indicate a close relationship between the endemic Hawaiian species and the North American species S. antirrhina, which is sister to a monophyletic group of the Hawaiian Silene, indicating a single colonization event. S. antirrhina is a diploid North American species that is not related to other native North American Silene, of which the majority are polyploid and belong to other clades. There is no obvious morphological support for the relationship between the Hawaiian Silene and S. antirrhina.

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2005.
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Biological Systematics
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URN: urn:nbn:se:uu:diva-77220OAI: oai:DiVA.org:uu-77220DiVA: diva2:105132
Available from: 2006-03-13 Created: 2006-03-13

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Eggens, FridaOxelman, Bengt

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