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Phylogeny of Withania (Solanaceae)
Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Department of Evolution, Genomics and Systematics. Systematisk botanik.
Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Department of Evolution, Genomics and Systematics. Systematisk botanik.
Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Department of Evolution, Genomics and Systematics. Systematisk botanik.
2005 (English)In: abstracts XVII International Botanical Congress: Vienna, Austria, Europe 17-23 July 2005, 2005Conference paper, Published paper (Other scientific)
Abstract [en]

Withania is a genus of about 11 species, six endemic in the Horn of Africa region, three in the Canary Islands, North Africa and Spain, one in southern Asia, and one widespread in the Old World tropics and subtropics. A phylogeny was inferred on the basis of DNA sequence data from three plastid regions: the trnL intron, trnL-F intergenic spacer, and the rps16 intron, as well as the nuclear ribosomal internal transcribed spacer (ITS). We found strong evidence for monophyly of Withania. The enigmatic Mellissia begonifolia, endemic to St Helena, probably is Withania’s nearest sistergroup and as sister of Withania and Mellissia we found some evidence for a clade consisting of Athenaea and Aureliana. All species of Withania except for W. aristata and W. frutescens form a clade that have W. aristata and/or W. frutescens as sister group. W. coagulans groups together with W. riebeckii in the chloroplast phylogeny but does not so on the basis of the ITS data. It may be of allopolyploid origin. Otherwise the phylogeny of the Horn of Africa taxa remains poorly resolved.

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2005.
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URN: urn:nbn:se:uu:diva-77687OAI: oai:DiVA.org:uu-77687DiVA: diva2:105599
Available from: 2006-03-15 Created: 2006-03-15

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Kool, AnneleenOxelman, BengtThulin, Mats

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