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Abstract Detail


McDonnell, Angela Jean [1], Fishbein, Mark [1].

Phylogenomics and evolution of New World milkweed vines (Gonolobinae) and resurrection of Chthamalia: a genome skimming and targeted enrichment approach.

Phylogenetic relationships among species and clades of the diverse Milkweed vine subtribe Gonolobinae (~500 spp.) are poorly understood. This lineage has an origin in the Neotropics but has undergone significant radiation in the seasonally dry grasslands and savannas of subtropical and temperate North America. A useful classification and an understanding of evolution within the American milkweed vines have been evasive due to extensive floral variation within the group and the problematic dustbin genus Matelea. We use a genome skimming and targeted enrichment approach to obtain sequence data for 768 nuclear loci and use the off-target reads to assemble plastomes. These data support relationships among some lineages of Gonolobinae and successfully reconstruct the evolutionary relationships among the multiple individuals of each species of the arid-adapted species of Matelea subgenus Chthamalia (~15 spp.). Emphasis is placed on the systematics and resurrection of Chthamalia as well as the evolution of growth form. We find multiple loss of twining events in the subtribe and one reversal to the twining growth form within Chthamalia.

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1 - Oklahoma State University, Plant Biology, Ecology, & Evolution, 301 Physical Sciences, Stillwater, OK, 74078, USA


Presentation Type: Oral Paper
Session: 19, ASPT Cooley Awards
Location: Sundance 5/Omni Hotel
Date: Tuesday, June 27th, 2017
Time: 8:00 AM
Number: 19001
Abstract ID:91
Candidate for Awards:George R. Cooley Award

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