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Abstract Detail

Systematics Section

Hinchliff, Cody [1], Roalson, Eric [2].

A supermatrix of sedges: results from a large combined analysis of Cyperaceae.

The highly diverse sedge family Cyperaceae has long been a topic of interest to plant systematists. Numerous molecular phylogenetic studies have been conducted on the family in recent decades, which have led to the inclusion of a broad spectrum of sedge diversity in public genetic sequence databases such as GenBank. We mined GenBank for targeted sequence data to generate the largest sedge phylogeny yet constructed, which consists of over 1,000 species and is based on genetic data from over 20 nuclear and chloroplast loci (counting cpDNA loci individually). We also generated novel sequence data to fill in gaps in the alignment and to add taxonomic diversity to underrepresented clades. The resulting phylogenetic hypotheses provide better taxonomic coverage than any sedge phylogeny yet produced, and represent a major advancement toward a highly resolved sedge tree of life. We will present these phylogenetic results and discuss their implications for sedge systematics, and we will briefly explore some of the challenges and advantages of the supermatrix approach to phylogenetics.

Broader Impacts:

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1 - Washington State University, School of Biological Sciences, 239C Abelson Hall, Pullman, WA, 99164-4236, USA
2 - Washington State University, School of Biological Sciences, 332 Abelson Hall, Pullman, WA, 99164-4236, USA


Presentation Type: Oral Paper:Papers for Sections
Session: 44
Location: Lindell A/Chase Park Plaza
Date: Wednesday, July 13th, 2011
Time: 11:00 AM
Number: 44011
Abstract ID:32

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