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Abstract Detail



Phylogenomics

Vatanparast, Mohammad [1], Powell, Adrian [2], Sherman-Broyles, Sue [2], Doyle, Jane [2], Doyle, Jeff [2], Egan, Ashley N. [1].

Phylogenomics of the Phaseoloid legumes: an introduction.

The legume family (Fabaceae; Leguminosae), is the third largest family of flowering plants and is the second most important family in economic value. The phaseoloid legumes are the highest in generic diversity (~120/750) and second in species diversity (~2200/19500), and include various important beans such as soybean, common bean, cowpea, pigeon pea and winged bean. Multiple molecular phylogenetic studies have been conducted using single or multiple chloroplast and nuclear regions, yet many areas of the phaseoloid phylogeny remain unresolved or with low statistical support, particularly along the backbone. To understand relationships and evolutionary history of these legumes, we sequenced transcriptomes of 24 species, from which we developed probes to target hundreds of genes to build a robust phylogenetic tree. Our transcriptomes include representatives of all subtribes and major, delineated clades determined in previous works. Preliminary results based on 390 orthologous gene trees and a coalescent-based species tree of 24 phaseoloid representatives and six taxa from across the whole family revealed robust phylogenetic relationships of multiple clades and subclades within phaseoloids that mostly correspond with previous findings. Beyond this, we obtained a well-resolved and supported backbone with the notable exception of generic relationships surrounding Glycine, the soybean, which is of polyploid origin. The bioinformatics workflow of marker development will also be presented.


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1 - Smithsonian Institution, Botany, Washington DC, DC, 37012, USA
2 - Cornell University, School of Integrative Plant Sciences, Ithaca , NY, 14853 , USA

Keywords:
phylogenomics
legumes
Transcriptome
polyploidy
RNA-seq
Beans.

Presentation Type: Oral Paper
Session: 1, Phylogenomics I
Location: 101/Savannah International Trade and Convention Center
Date: Monday, August 1st, 2016
Time: 8:30 AM
Number: 1003
Abstract ID:139
Candidate for Awards:None


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