Abstract Detail

Systematics Section/ASPT

Gonzalez, Lauren [1], Bell , Charles David [2].

Assessment of the phylogenetic relationships in the South American valerians using next-generation genomic sequence data.

Valerianaceae in South American represent one of the best examples of rapid species diversification on a continental scale. The variety of forms that have arisen in this clade, presumably over the past 5-10 million years, has all the signatures of an adaptive radiation. The phylogeny of Valerianaceae has received a lot of attention within the last 10 years, but species relationships within the southern South American radiation of Valeriana have not been well resolved with traditional genetic markers, because of its recent and rapid radiation. For this study we collected high-throughput genomic sequence data from reduced-representation libraries obtained through Genotyping By Sequencing (GBS) protocols. Putative orthologs were identified using within- and among-sample clustering using the computer software pyRAD. We recovered over 3000 loci for 15 species of southern South American Valeriana, with 140 loci present in all samples. We analyzed a set of phylogenetic trees generated from each locus using concordance (BUCKy) and multispecies coalescent (*BEAST) methods. For comparative purposes, we also used a supermatrix approach to infer the phylogeny for these taxa.

1 - University of New Orleans, Biological Sciences, 2000 Lakeshore Dr., New Orleans, LA, 70148, United States
2 - University Of New Orleans, Department Of Biological Sciences, 2000 Lakeshore Drive, New Orleans, LA, 70148, USA

Keywords:
*BEAST
Andes
BUCKy
pyRAD
GBS
rapid radiation
Valerianaceae
next generation sequencing.

Presentation Type: Oral Paper:Papers for Sections
Session: 17
Location: Payette/Boise Centre
Date: Tuesday, July 29th, 2014
Time: 9:00 AM
Number: 17005
Abstract ID:372
Candidate for Awards:George R. Cooley Award