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Abstract Detail



Systematics Section/ASPT

Xi, Zhenxiang [1], Liu, Liang [2], Rest, Joshua [3], Davis, Charles [4].

Plant phylogenomics and the coalescent.

Advances in next-generation sequencing and computational phylogenomics represent tremendous opportunities for inferring plant species relationships using hundreds, or even thousands, of genes. Until recently, most broad plant phylogenomic studies have relied on concatenation methods in which phylogenies are inferred from a single combined gene matrix. Theoretical and simulation studies, however, have demonstrated that concatenation methods may yield misleading results. In this presentation we explore two largescale phylogenomic datasets to investigate the value of the coalescent. Our results shed insights on key seed plant relationships. Equally important, they demonstrate the potential value of the coalescent for resolving deep nodes in the tree of life, and identify areas where standard concatenation methods can likely be improved when applied to phylogenomic data.


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1 - Harvard University, Department of Organismic and Evolutionary Biology, Harvard University Herbaria, Cambridge, MA, 02138
2 - University of Georgia, Department of Statistics and Institute of Bioinformatics, Athens, GA, 30602
3 - Department of Ecology and Evolution, Stony Brook University, Stony Brook, NY, 11794
4 - Harvard University, Organismic and Evolutionary Biology, Harvard University Herbaria, 22 Divinity Ave, Cambridge, MA, 02138, United States

Keywords:
coalescence
concatenation
phylogenomics
seed plants.

Presentation Type: Oral Paper:Papers for Sections
Session: 34
Location: Evergreen/Grove
Date: Wednesday, July 30th, 2014
Time: 8:30 AM
Number: 34003
Abstract ID:647
Candidate for Awards:None


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