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Abstract Detail


Sinn, Brandon T. [1], Daragan, Christina [2], Freudenstein, John V. [3].

Phylogenomics of Asarum subgenus Heterotropa section Hexastylis: serial derivations of similar floral forms spawned from two geographically-widespread species.

Low-level phylogenetic relationships between species of Asarum subgenus Heterotropa section Hexastylis have not been resolved by analyses using plastid and nuclear markers. Using Double-Digestion Restriction Enzyme-Associated DNA Sequencing (ddRADseq), we have generated and analyzed phylogenomic datasets of up to ~5,000,000 characters from 97 individuals, representing all taxa in section Hexastylis. Using a custom pipeline, we combined elements of Stacks, pyRAD, RAxML, and multiple R libraries to streamline and automate dataset generation and analysis by integrating phylogenetic, niche equivalency and morphometric analyses. ML analyses recover two major diversification events within section Hexastylis, each with a phyletic grade of a geographically-widespread, paraphyletic progenitor species which has repeatedly spawned geographically-restricted species with novel floral shapes.

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1 - New York Botanical Garden, 2900 Southern Boulevard, Bronx, NY, 10458
2 - The Ohio State University, 1315 Kinnear Road, Columbus, OH, 43212, USA
3 - Ohio State University, MUSEUM OF BIOLOGICAL DIVERSITY, 1315 KINNEAR RD, COLUMBUS, OH, 43212-1157, USA


Presentation Type: Oral Paper
Session: 16, Phylogenomics II
Location: 202/Savannah International Trade and Convention Center
Date: Tuesday, August 2nd, 2016
Time: 8:00 AM
Number: 16001
Abstract ID:534
Candidate for Awards:Margaret Menzel Award

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