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What can a new large-scale phylogeny of Selaginellaceae tell us?
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Organismal Biology, Systematic Biology.
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Organismal Biology, Systematic Biology.
2012 (English)Conference paper, Poster (with or without abstract) (Other academic)
Abstract [en]

Selaginellaceae, spikemosses, are a large family of lycophytes comprising approximately 700 species spread mainly across the tropics and subtropics. The family is interesting in many aspects, not the least since it has an origin in the Early Carboniferous (ca. 345 Ma), which makes it an important key for understanding the early evolution of vascular plants. In contrast to most other spore dispersed plants, Selaginellaceae are heterosporous, meaning that both megaspores and microspores are needed for reproduction. This might have implications for the plants’ ability to disperse, and studying dispersal and distribution patterns in Selaginellaceae can give us important contributions towards a broader understanding of plant dispersal biology.

All evolutionary questions have to be put into a phylogenetic framework, and up to now no larger phylogeny of Selaginellaceae has been made. In this study a dataset of approximately 200 species of Selaginella has been assembled, making up for almost one third of the diversity known today. The resulting phylogeny gives us many new insights about the evolutionary history of Selaginellaceae, and in particular it helps us make hypotheses about the historical biogeography of the family. Is for example the disjunct distribution of Selaginellaceae a result of historical vicariance events or long-distance dispersal?

Place, publisher, year, edition, pages
2012.
National Category
Biological Systematics
Identifiers
URN: urn:nbn:se:uu:diva-180543OAI: oai:DiVA.org:uu-180543DiVA: diva2:550882
Conference
14th Nordic Meeting on Tropical Botany, Gothenburg, Sweden, 6-8 August, 2012
Available from: 2012-09-08 Created: 2012-09-08 Last updated: 2013-11-07Bibliographically approved

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Weststrand, StinaKorall, Petra

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