Widespread Population Sampling of Gaillardia (Asteraceae)

Spencer Wight, Oberlin College

Location

Science Center, A154

Document Type

Presentation

Start Date

4-26-2013 4:00 PM

End Date

4-26-2013 5:00 PM

Abstract

The genus Gaillardia currently contains 21 different species and includes seven gypsum endemic species. Growth in these plants is restricted to gypseous soils, which isolates them in genetic islands, increasing diversity within species. We sequenced DNA from nuclear and chloroplast regions in multiple populations of species and constructed MP trees in an attempt to further clarify the phylogeny of the genus. Our results support 3 separate evolutionary origins of gypsum endemism in Gaillardia, and two populations of G. pinnatifida which grouped within a gypsum endemic clade, suggesting that they are in fact a previously undescribed gypsum endemic species.

Notes

Session III, Panel 11: Mapping the Genus: Studies of Flora and Phylogeny
Moderator: Mike Moore, Associate Professor of Biology

Major

Biology

Advisor(s)

Taylor Allen, Biology

Project Mentor(s)

Michael Moore, Biology

April 2013

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Apr 26th, 4:00 PM Apr 26th, 5:00 PM

Widespread Population Sampling of Gaillardia (Asteraceae)

Science Center, A154

The genus Gaillardia currently contains 21 different species and includes seven gypsum endemic species. Growth in these plants is restricted to gypseous soils, which isolates them in genetic islands, increasing diversity within species. We sequenced DNA from nuclear and chloroplast regions in multiple populations of species and constructed MP trees in an attempt to further clarify the phylogeny of the genus. Our results support 3 separate evolutionary origins of gypsum endemism in Gaillardia, and two populations of G. pinnatifida which grouped within a gypsum endemic clade, suggesting that they are in fact a previously undescribed gypsum endemic species.