Abstract Detail

Systematics

Stonesmyth, Emma [1], Aguirre Santoro, Julian [2], Zuluaga Trochez, Alejandro [3], Jabaily, Rachel [4].

Revisiting the Chilean Puya (Bromeliaceae) hypothesis using a phylogenomic approach with the Angiosperm 353 probe set.

The genus Puya (Bromeliaceae) is native to South America and the ca. 250 species are characteristic of the high-Andean páramo, puna, and inter-Andean valleys. An important group of taxa are endemic to low elevations in central Chile, disjunct from the rest of the genus. In a previous study, the several chloroplast loci sequenced determined that the Chilean taxa form a monophyletic clade sister to the rest of the genus. In contrast, the single nuclear gene phylogeny determined that only Chilean taxa with blue flowers were sister to the remainder, with yellow-flowered Chilean taxa more closely related to taxa from the high central Andes. The incongruence was used to propose a hypothesis of introgression, chloroplast capture, and homoploid hybrid speciation in the group, but conclusions were limited by poor phylogenetic support. This hypothesis is now retested and strengthened using a greater taxon sampling and 300+ nuclear loci generated by the Angiosperm 353 probe set. Extensive data from the plastome are also generated and analyzed to generate a more complete picture of evolution.

1 - Colorado College, 14 E Cache La Poudre St, Colorado Spgs, CO, 80903, United States
2 - Universidad Nacional De Colombia, Instituto De Ciencias Naturales, Carrera 30 # 45-03, Instituto De Ciencias Naturales, Oficina 304, Bogota, DC, 0000, Colombia
3 - Universidad del Valle, Departamento de Biología, Cali, Colombia
4 - Colorado College, Department of Organismal Biology & Ecology, 14 E. Cache la Poudre St., Colorado Springs, CO, 80903, USA

Keywords:
Puya
Chile
Bromeliaceae
chloroplast capture
Angiosperm 353
phylogenomics.

Presentation Type: Oral Paper
Session: SYS4, Systematics IV: Monocots part B to Rosids part A
Location: Virtual/Virtual
Date: Thursday, July 30th, 2020
Time: 1:00 PM
Number: SYS4003
Abstract ID:528
Candidate for Awards:None