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Abstract Detail

Systematics Section/ASPT

Eserman, Lauren [1], Miller, Rick [2].

Systematics of morning glories: Phylogenetic hypothesis based on a synthesis of 28 gene trees.

Morning glories have been the central focus of a wide range of evolutionary and ecological studies. A well-resolved phylogeny for Ipomoea and its close relatives will strengthen these research efforts. Here we present a an estimate of evolutionary relationships for 136 species of morning glories based on all available molecular phylogenetic data. We integrate these results with our current understanding of the systematics of the tribe Ipomoeeae. Many lineages have been sampled densely allowing us to draw inferences about species-level relationships. We present a novel approach for determining the relative noise versus signal in the sequence data, using three benchmarks of relationships within Ipomoeeae. Our results found strong support for the monophyly of major clades (e.g. Astripomoeinae versus Argyreiinae), previously identified natural groups (e.g. section Pharbitis), as well as novel clades that bring together both taxonomically and biogeographically disparate species (Ipomoea amnicola and its close relatives). This study provides the most detailed phylogenetic hypothesis of relationships among Ipomoeeae species to date.

Broader Impacts:

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1 - University of Georgia, Plant Biology Department, Athens, GA, 30602, USA
2 - Southeastern Louisiana University, Department of Biological Sciences, Hammond, Louisiana , 70402, USA

gene trees
molecular phylogeny
evolutionary relationships.

Presentation Type: Oral Paper:Papers for Sections
Session: 49
Location: Marlborough A/Riverside Hilton
Date: Wednesday, July 31st, 2013
Time: 5:15 PM
Number: 49015
Abstract ID:769
Candidate for Awards:None

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