Abstract Detail

A synthesis of new paleontological and phylogenomic perspectives on gymnosperm evolution

Burleigh, Gordon [1], Endara, Lorena [1], Ickert-Bond, Stefanie [2], Nagalingum, Nathalie [3].

A Targeted Sequence Capture Approach to the Gymnosperm Phylogeny.

The GoFlag (Genealogy of Flagellate Plants) project developed a probe set to sequence 452 exons from low copy nuclear loci across flagellate plants, including bryophytes, lycophytes, ferns, and gymnosperms. A pilot analysis suggested that a targeted sequence capture approach using this probe set could produce an informative phylogenetic supermatrix that included members of all major flagellate plant lineages. In this study, we examine the performance of sequence data recovered from this targeted enrichment approach to resolve species-level relationships throughout the gymnosperms, focusing on relationships among conifers. We evaluate the ability of this approach to obtain nuclear sequence data across diverse lineages and the phylogenetic information in both exon and the flanking intron regions. We also evaluate issues of gene tree discordance in constructing a tree of extant gymnosperms. We finally discuss future implications for integrating data from this targeted sequence capture approach with other data to integrate extinct taxa in phylogenetic analyses and ultimately resolve a genealogy of gymnosperms.

1 - University of Florida, Department of Biology, Gainesville, FL, 32611, USA
2 - University Of Alaska Fairbanks, Museum Of The North , 1220 Miller Hill Ext., Fairbanks, AK, 99709, United States
3 - California Academy of Sciences, 55 Music Concourse Dr, San Francisco, CA, 94118, USA

Keywords:
gymnosperms
phylogeny
Targeted Sequence Capture.

Presentation Type: Colloquium Presentations
Session: C04, A synthesis of new paleontological and phylogenomic perspectives on gymnosperm evolution
Location: 102/Mayo Civic Center
Date: Monday, July 23rd, 2018
Time: 1:30 PM
Number: C04001
Abstract ID:844
Candidate for Awards:None