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Abstract Detail


Systematics Section

Ames, Mercedes [1], Givnish, Thomas J. [2], Clements, Mark [3], Williams, N. H. [4], Pires, J. Chris [5], Kinney, Michael S. [6], Leebens-Mack, James H. [7], Ané, Cecile [8], Davis, Jerrold I. [9], dePamphilis, Claude W. [10], Gandolfo, Maria [11], Graham, Sean W. [12], Stevenson, Dennis Wm. [13], Zomlefer, W. B. [14].

A plastome- and nuclear gene-based phylogeny for the orchid subfamily Epidendroideae.

Relationships among the tribes and (especially) the subtribes of the epidendroids remain the greatest enigma in orchid systematics. As part of the Monocot AToL project, we are sequencing the entire plastid genome of species representing all subtribes of Epidendroideae, as well as the single-copy nuclear gene PHYC. These data should provide powerful new insights into the evolution of the epidendroids, which comprise some 80% of the largest family of monocots. We will use these data to (1) evaluate the potential importance of reticulate evolution at the tribal and subtribal level in epidendroids; (2) test recent phylogenetic hypotheses based on 2-8 plastid genes and morphology; and (3) establish a timeline for divergence of tribes within the subfamily. An analysis of support for individual nodes in the tree as a function of the number of genes, introns, spacers, and bases included will be used to assess minimum requirements for a well-resolved phylogeny of the epidendroids.


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1 - University of Wisconsin, Botany, 430 Lincoln Dr, Madison, WI, 53706, USA
2 - University of Wisconsin-Madison, Department of Botany, 430 Lincoln Drive, Birge Hall, Madison, WI, 53706, USA
3 - CSIRO (Commonwealth Scientific and Industrial Research Organization), Centre for Plant Biodiversity Research, GPO Box 1600, Canberra, ACT, 2601, Australia
4 - University of Florida, Florida Museum of Natural History, Gainesville, Florida, 32611-7800, USA
5 - University of Missouri Columbia, Biological Sciences, 1201 Rollins Road, Life Sciences Center 311, Columbia, Missouri, 65211, USA
6 - University of Missouri-Columbia, Biological Sciences, 311 Life Sciences Center, 1201 Rollins St, Columbia, MO, 65211, USA
7 - University of Georgia, Department of Plant Biology, 4504 Miller Plant Sciences, Athens, GA, 30602, USA
8 - University of Wisconsin-Madison, Department of Botany, 430 Lincoln Drive, Madison, WI, 53706
9 - Cornell University, L.H. Bailey Hortorium, Department of Plant Biology, Ithaca, New York, 14853, USA
10 - Pennsylvania State University, Department of Biology, 403 Life Sciences Building, University Park, Pennsylvania, 16802, USA
11 - Cornell University, L.H. Bailey Hortorium and Department of Plant Biology, 228 Plant Science Building, Ithaca, New York, 14853, USA
12 - University of British Columbia, Botanical Garden And Centre For Plant Research, 6804 Sw Marine Drive, Vancouver, British Columbia, V6T 1Z4, Canada
13 - The New York Botanical Garden, 200th Street & Southern Blvd., Bronx, NY, 10458, USA
14 - University of Georgia, Department of Plant Biology, 2052 Miller Plant Sciences Building, Athens, Georgia, 30602-7271, USA

Keywords:
none specified

Presentation Type: Oral Paper:Papers for BSA Sections
Session: 20
Location: Cottonwood A/Snowbird Center
Date: Monday, July 27th, 2009
Time: 4:00 PM
Number: 20011
Abstract ID:692


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