| Abstract Detail
Recent Topics Posters Foote , Abbey J [1], Boutte, Julien [2], Fishbein, Mark [3], Simoes, Andre [4], Livshultz, Tatyana [5], Straub, Shannon [2]. Resolving the Phylogenetic Tree of Rauvolfioideae Tribes using the Whole Chloroplast Genome. The Rauvolfioideae (Apocynaceae) consists of 11 tribes and 79 genera. These plants are commonly lianas, vines, or perennial herbs, often with small, white, salverform corollas. Traditionally, differences in fruit and seed morphology have provided the basis for classification, but have been shown in previous phylogenetic studies to be homoplasious. These previous studies have been based on morphological observations and phylogenetic analysis of relatively few genes, and have resulted in unresolved relationships among the tribes. This study aimed to resolve the phylogeny of Rauvolfioideae by assembling the sequences of whole chloroplast genomes from paired-end Illumina reads for 28 species spanning all 11 tribes. The resulting phylogeny largely agrees with previous studies of small regions of the chloroplast genome, while resolving several previously unresolved nodes. The placement of Pycnobotrya nitida as sister to Willughbeieae, Tabernaemontaneae and Vinceae leads us to question its current placement within tribe Melondineae. Additionally, the Willughbeieae is polyphyletic, due to the placement of Leuconotis anceps sister to the Tabernaemontaneae, rather than the other species of this tribe. While this study resolves some tribal relationships of Rauvolfioideae, future analysis of nuclear and mitochondrial genes will be necessary to understand the evolution of this subfamily.
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1 - Hobart and William Smith Colleges, Biology, 300 Pulteney St, Geneva, NY, 14456, USA
2 - Hobart and William Smith Colleges, Department of Biology, 300 Pulteney Street, Geneva, NY, 14456, USA
3 - Oklahoma State University, Plant Biology, Ecology, & Evolution, 301 Physical Sciences, Stillwater, OK, 74078, USA
4 - Universidade Estadual de Campinas, Department of Plant Biology, Campinas, SP, Brazil
5 - Drexel University, Biodiversity, Earth & Environmental Science, 3141 Chestnut Street, Philadelphia, PA, 19104, USA
Keywords:
Apocynaceae
Rauvolfioideae
plastome
phylogeny.
Presentation Type: Recent Topics Poster
Session: P, Recent Topics Posters
Location: Exhibit Hall/Omni Hotel
Date: Monday, June 26th, 2017
Time: 5:30 PM
Number: PRT017
Abstract ID:766
Candidate for Awards:None |
