Abstract Detail

Systematics Section/ASPT

Calderon, Gloria [1], Bell, Charles [2].

Phylogeny and diversification of Valerianaceae (Dipsacales): new data & new hypotheses.

Valerianaceae (Dipsacales) is comprised of 250 species distributed worldwide (with the exception of Australia) across a wide ecological gradient. Valerianaceae is a family of the order Dipsacales. Over the past decade, much attention has been paid to the phylogenetic relationships within this clade. Most of these studies, however, have relied exclusively on chloroplast DNA sequence data. For this study, we collected additional data (from both sequences & taxa) to further resolve relationships among the major lineages of Valerianaceae. The phylogenetic utility of each of these several conserved orthologous sequences (COSII markers) was compared to the internal transcribed spacer (ITS) region and several non-coding chloroplast loci that have been widely used in phylogenetic inference of plants. Using already developed primers from a recent study that identified a set of nuclear genes that occur in single copy in multiple sequenced angiosperms, we were able to use sequence data from 4 of these low copy genes. We performed several phylogenetic analyses with these genes and in combination with several chloroplast DNA regions. Results from these analyses were in strong agreement with previous molecular study and provided additional support for several new hypotheses.

Broader Impacts:

1 - University of New Orleans, Biological Sciences, 2000 Lakeshore Drive, New Orleans, LA, 70148, USA
2 - University of New Orleans, Department of Biological Sciences, 2000 Lakeshore Drive, New Orleans, LA, 70148, USA

Keywords:
Valerianaceae
Dipsacales
COSII
phylogeny.

Presentation Type: Poster:Posters for Sections
Session: P
Location: Grand Salon A - D/Riverside Hilton
Date: Monday, July 29th, 2013
Time: 5:30 PM
Number: PSY056
Abstract ID:312
Candidate for Awards:None