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Abstract Detail


Sancho, Ernesto Sanz [1], Krosnick, Shawn Elizabeth [2].

Reconstructing the evolutionary history of the native Austral-Pacific species of Passiflora using anchored hybrid enrichment.

The genus Passiflora L. (Passifloraceae L.) consists of ca. 607 mostly neotropical species, with 24 native to Southeast Asia, Australia, and Southwest Pacific Islands. In the Austral-Pacific region, Passiflora subgenus Decaloba (DC.) Rchb. supersection Disemma (Labill.) J. M. MacDougal & Feuillet section Disemma (Labill.) J. M. MacDougal & Feuillet consists of the following three native species: Passiflora herbertiana Ker Gawl., P. cinnabarina Lindl., and P. aurantia G. Forster. Passiflora aurantia is divided in three varieties: P. aurantia var. aurantia G. Forster, P. aurantia var. pubescens F.M. Bailey, and P. aurantia var. samoensis (Exell) W.J. de Wilde. Additionally, two undescribed taxa similar to P. aurantia have been reported in New Caledonia. This work focuses on section Disemma, the only section of Passiflora bearing the unusual characteristics of bird-pollination features in the Old World, long blooming period (five days), and self-compatibility. The objectives of this project seek to reconstruct the evolutionary history, revise the taxonomy, and reconstruct the biogeography of section Disemma, using the phylogeny as framework. This investigation uses the cost-effective method of anchored hybrid enrichment (AHE) to examine phylogenetic relationships among species of section Disemma. Sixteen individuals were sequenced, including P. aurantia (two varieties), P. herbertiana, P. cinnabarina, and the two undescribed taxa. The project evaluates the utility of AHE at resolving relationships at the species level and below, for section Disemma. It also provides new data to further understand the complex biogeography of the Austral-Pacific region, and its rich ecological history.

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1 - Tennessee Technological University, Biology, 1100 North Dixie, Pennebaker Hall 207, Biology, Cookeville, TN, 38505, United States
2 - Tennessee Tech University, Dept. of Biology, 1100 North Dixie, Cookeville, TN, 38505, USA

anchored phylogenomics
Passiflora aurantia
Passiflora herbertiana
Passiflora cinnabarina.

Presentation Type: Oral Paper
Session: 41, Basal Rosids & Rosids I
Location: 101/Savannah International Trade and Convention Center
Date: Wednesday, August 3rd, 2016
Time: 10:15 AM
Number: 41009
Abstract ID:736
Candidate for Awards:None

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