Abstract Detail



Population Genetics/Genomics

Pelaez, Pablo [1], Gernandt, David [2], Ocampo Millan, Gudalupe [3], Montesinos Bastida, Mariana [3], Montes Montiel, Ruben [1], Vazquez-Lobo, Alejandra [4].

Systematics and conservation genetics of the pinyon pines of southern California and Baja California.

Pinus californiarum and P. quadrifolia are distributed naturally at elevations of 1,000 to 1,800 m in the Peninsular Ranges of southern California, USA and Baja California, Mexico. We studied the phylogenetic relationships between these two taxa and other pinyon pines and characterized their genetic diversity and structure. For the single-needled pinyon pine, P. californiarum, we sampled 26 individuals from eight populations ranging north to south from the San Jacinto Mountains to the Sierra de San Francisco. For P. quadrifolia we sampled 27 individuals from seven populations ranging from the San Jacinto Mountains to the Sierra San Pedro Mártir. Using the Hyb-Seq method, we generated a dataset of 8,000 SNPs from >1,000 target-enriched low-copy nuclear genes and complete- to nearly-complete plastomes. We found that P. quadrifolia is more closely related to P. monophylla to the north and west than it is to P. californiarum. We also explored previous hypotheses that each taxon was comprised of two to three gene pools along the north-south gradient and tested for evidence of admixture. Finally, we explored whether any populations had a high number of unique alleles.


1 - Instituto de Biologia, Universidad Nacional Autonoma de Mexico, Departamento de Botanica, Circuito exterior S/N Ciudad Universitaria, Coyoacán, Ciudad de Mexico, DF, 04510, Mexico
2 - Instituto de Biologia, Universidad Nacional Autonoma de Mexico, Departamento de Botanica, Circuito exterior S/N Ciudad Universitaria, Coyoacán, Mexico, DF, 04510, Mexico
3 - Universidad Autonoma del Estado de Morelos, Facultad de Ciencias Biologicas, Col. Chamilpa, Cuernavaca, MOR, 62209, Mexico
4 - Universidad Autonoma del Estado de Morelos, Centro de Investigacion en Biodiversidad y Conservacion, Col. Chamilpa, Cuernavaca, MOR, 62209, Mexico

Keywords:
conservation genetics
pinyon pine
Pinus subsection Cembroides
low copy nuclear genes
plastome
Peninsular Ranges.

Presentation Type: Poster This poster will be presented at 6:15 pm. The Poster Session runs from 5:30 pm to 7:00 pm. Posters with odd poster numbers are presented at 5:30 pm, and posters with even poster numbers are presented at 6:15 pm.
Number: PPG016
Abstract ID:913
Candidate for Awards:None


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