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Abstract Detail

Colloquium: Assembling the Tree of Life Colloquium

McNeal, Joel R. [4], Davis, Jerrold I. [1], dePamphilis, Claude W. [2], Givnish, Thomas J. [3], McKain, Michael R.  [4], Moore, Michael [5], Pires, J. Chris [6], Soltis, Douglas E. [7], Soltis, Pamela S. [8], Stevenson, Dennis Wm. [9], Zomlefer, W. B. [10], Leebens-Mack, James H. [4].

Understanding the monocot tree of life using complete chloroplast genome sequences.

Monocots represent nearly a quarter of all extant flowering plants and contain a disproportionate number of the world's most economically important species; thus, understanding the evolutionary relationships in this major clade is particularly crucial. Although much progress has been made in resolving monocot phylogeny in recent years, a number of the backbone relationships between the 12 monocot orders remain rather weakly supported. Advances in sequencing technologies have allowed phylogenetic hypotheses to be addressed with larger quantities of data, and sequences of entire chloroplast genomes have been particularly instrumental in resolving many of the most recalcitrant backbone relationships across angiosperms. With more than 80 genes and almost 80 kilobases of alignable, homologous nucleotide sequence across angiosperms, there are few nodes which chloroplast genome sequence cannot resolve with high confidence. We use data extracted from full chloroplast genome sequences representing all 12 orders of monocots to construct a well-resolved phylogeny. The evolutionary implications of this phylogeny will be discussed along with methods for diagnosing artifacts associated with uneven taxon sampling.

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1 - Cornell University, L.H. Bailey Hortorium, Department of Plant Biology, Ithaca, New York, 14853, USA
2 - Pennsylvania State University, Department of Biology, 403 Life Sciences Building, University Park, Pennsylvania, 16802, USA
3 - University of Wisconsin Madison, Department of Botany, Birge Hall, 430 Lincoln Drive, Madison, Wisconsin, 53706-1381, USA
4 - University of Georgia, Department of Plant Biology, 4504 Miller Plant Sciences, Athens, GA, 30602, USA
5 - Oberlin College, Biology Department, 119 Woodland Street, Science Center K111, Oberlin, Ohio, 44074-1097, USA
6 - University of Missouri Columbia, Biological Sciences, 1201 Rollins Road, Life Sciences Center 311, Columbia, Missouri, 65211, USA
7 - University of Florida, Botany, PO Box 117800, Gainesville, FL, 32611, USA
8 - Florida Museum of Natural History, Dickinson Hall, P.O. Box 117800, Gainesville, Florida, 32611, USA
9 - The New York Botanical Garden, 200th Street & Southern Blvd., Bronx, NY, 10458, USA
10 - University of Georgia, Department of Plant Biology, 2052 Miller Plant Sciences Building, Athens, Georgia, 30602-7271, USA

chloroplast genome.

Presentation Type: Symposium or Colloquium Presentation
Session: C1
Location: Cottonwood C/Snowbird Center
Date: Tuesday, July 28th, 2009
Time: 2:00 PM
Number: C1005
Abstract ID:626