Abstract Detail

Recent Topics Posters

Fennell, Meredith [1], Boutte, Julien [1], Livshultz, Tatyana [2], Straub, Shannon [1].

Assessing the phylogeny of Apocyneae (Apocynaceae) using whole chloroplast genomes.

In recent years, Next Generation Sequence (NGS) has allowed for the collection of ever larger data sets for phylogenetics. This improvement in technology has allowed for evolutionary relationships to be resolved and greater support to be provided for those that were previously established. The phylogeny of the APSA (Apocynoideae- Periplocoideae- Secamonoideae- Asclepiadoideae) clade of Apocynaceae and its subclades have been difficult to resolve using traditional approaches and even whole plastome data sets due to ancient rapid radiations. In this study, sampling was increased by Illumina NGS of 13 new chloroplast genomes (plastomes) from within the tribe Apocyneae. Plastomes were assembled de novo in Geneious (v. 10.2.5) and aligned with 17 previously published Apocynaceae plastomes using MAFFT (v. 7.017).  The phylogeny was inferred in IQTree. Results from the increase in sampling were consistent with the topologies in previous studies and increased support for some relationships. An analysis of the plastomes revealed a truncation of the 5’ end of rpoB shared by subtribes Inchnocarpinae and Chonemorphinae. A duplication of trnQ and large repetitive insertions in accD were also observed in the plastome of Beaumontia murtonii, but were not shared by Vallaris solanacea, a representative of its sister genus, or any other species sampled within Apocyneae.

1 - Hobart and William Smith Colleges, Department of Biology, 300 Pulteney St., Geneva, NY, 14456, USA
2 - Drexel University, Biodiversity Earth and Environmental Sciences, Academy Of Natural Sciences Of Drexel University, 1900 Benjamin Franklin Parkway, Philadelphia, PA, 19103, United States

Keywords:
Apocynaceae
phylogeny
plastome.

Presentation Type: Recent Topics Poster
Session: P, Recent Topics Posters
Location: Grand Ballroom - Exhibit Hall/Mayo Civic Center
Date: Monday, July 23rd, 2018
Time: 5:30 PM
Number: PRT019
Abstract ID:1309
Candidate for Awards:None