Abstract Detail

A synthesis of new paleontological and phylogenomic perspectives on gymnosperm evolution

Gernandt, David [1], Peláez, Pablo [2], Montes Montiel, Rubén [2], Ortiz Martínez, Alfredo [2], Moreno Letelier, Alejandra [3].

Phylogenetics, incomplete lineage sorting, and reticulation in two clades of North American pines.

Incomplete lineage sorting and reticulation are important forces in the evolution of long-lived wind pollinated plants. We explore these factors using target enriched low copy nuclear gene sequence data for Pinus subsections Cembroides and Australes. We used Illumina reads to identify single nucleotide polymorphisms for multiple individuals per species using a Pinus taeda draft genome as a reference, and inferred phylogenetic relationships using coalescent methods with and without permitting reticulation events. We compared resolution and branch support between methods that infer phylogenies by summarizing individual gene trees with those that treat sites as independent. We also tested hypotheses of introgression and hybrid speciation in both groups using analyses of phylogenetic networks and population structure

1 - Universidad Nacional Autonoma de Mexico, Departamento de Botánica, Apartado Postal 70-233, Ciudad de Mexico, 04510, Mexico
2 - Universidad Nacional Autonoma de Mexico, Departamento de Botanica, Apartado Postal 70-233, Ciudad de Mexico, 04510, Mexico
3 - Universidad Nacional Autonoma de Mexico, Jardin Botanico, Circuito exterior S/N Ciudad Universitaria, Ciudad de Mexico, 04510, Mexico

Keywords:
admixture
Pinus
phylogeny
low-copy nuclear loci
Pinaceae.

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: 4:00 PM
Number: C04010
Abstract ID:674
Candidate for Awards:None