Abstract Detail

Phylogenomics

Kates, Heather Rose [1], Soltis, Pamela  S. [2], Soltis, Douglas [3].

Species tree estimation in Cucurbita provides new insight into the genetic diversity of multiple crop species and their wild relatives.

Phylogenetics can aid the study of plant domestication by resolving sister relationships between crops and their wild relatives, thereby identifying the ancestors of cultivated plants. Previous phylogenetic studies of Cucurbita (pumpkins and squashes) suggest histories of deep coalescence within the group that complicate uncovering the genetic origins of the six crop subspecies. Here we revisit the results of our recent species tree estimation for multiple individuals for each of the twenty Cucurbita species and subspecies to compare different patterns and levels of genetic diversity within four crop-wild subspecies pairs. We based our species tree estimation on 44 loci derived from introns of single-copy nuclear genes. Our results provide new insight into relationships between wild and domesticated species and illustrate the need for extensive geographic and genetic sampling for phylogeny-based reconstruction of relationships between crops and wild plants.

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Presenting author personal website

1 - University of Florida, Florida Museum of Natural History, Dickinson Hall, PO Box 117800, Gainesville, FL, 32611, USA
2 - University Of Florida, Florida Museum Of Natural History, PO BOX 117800, Gainesville, FL, 32611-7800, USA, 352/273-1964
3 - Florida Museum of Natural History, Florida Museum of Natural History, Dickinson Hall - Museum Road, Gainesville, FL, 32611, United States

Keywords:
Cucurbits
crop wild relatives
species tree
crop evolution
microfluidic PCR-based target enrichment
low-copy nuclear markers.

Presentation Type: Oral Paper
Session: 38, Phylogenomics III
Location: 204/Savannah International Trade and Convention Center
Date: Wednesday, August 3rd, 2016
Time: 10:45 AM
Number: 38011
Abstract ID:827
Candidate for Awards:None