| Abstract Detail
Macroevolution McDade, Lucinda [1], Kiel, Carrie [2], Medina, Nicolas [3], Lujan, Manuel [4], Zhuang, Yongbin [5], Schreiber, Matt [6], Stone, Heather [6], Berbeo, Eileen [7], Tripp, Erin [8]. How many ways are there to make a purple flower? Floral ‘syndromes’ are understood to comprise integrated, co-evolving sets of floral traits including flower color, size, shape, odor, reward, and timing of anthesis. Numerous studies have emphasized the importance of flower color in pollinator attraction and thus reproductive success in plants. Differences in pigmentation, including both the particular pigments present and their distribution across the flower, contribute to differential apparency and attractiveness of flowers to pollinators. However, few studies have examined flower color biochemically–and in a phylogenetic context–in large radiations of plants. Among the ~300 species of Neotropical Ruellia (Acanthaceae), there is remarkable variation in floral traits, especially color. Phylogenetic results to date have shown considerable evolutionary vagility in these traits, making this an excellent system for documenting repeated patterns of, and constraints on, floral color evolution and for testing hypotheses regarding factors associated with these evolutionary transitions. We take an integrative and comparative phylogenomic approach that incorporates two sources of data on flower color: floral spectral reflectance data and anthocyanin pigment profiles from HPLC analysis. For a nearly complete taxon sample for New World Ruellia, we generated ddRADseq data and constructed a phylogenomic hypothesis that provides evolutionary context to understand the patterns of change in flower color across the clade, including covariation between spectral reflectance and pigment profile. Most basically, our data enable us to address the question of whether human perception of flower color provides adequate description of the trait. In 2013, we set out to answer a question we posed of Ruellia: how many ways are there to make a purple flower? Five years, hundreds of species and fieldwork in seven countries later, our data have yielded a quantitative look at this question. You will want to come to hear about what we have learned!
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Related Links:
http://trippreport.com/
1 - 1500 N. College Avenue, Rancho Santa Ana Botanic Garden, Claremont, CA, 91711, United States
2 - Rancho Santa Ana Botanic Garden, 1500 North College Ave, Claremont, CA, 91711.0, United States
3 - Rancho Santa Ana Botanic Garden, 1500 N. College Ave, Rancho Santa Ana Botanic Garden, Claremont, CA, 91711, United States
4 - Rancho Santa Ana Botanic Garden, 1500 N College Ave, Claremont, CA, 91711, United States
5 - Shandong Agricultural University, 61 Zongzong St., Tai'an , Shandong, 271018, China
6 - University of Colorado Boulder, UCB 334, Ramaley Hall, Dept of Ecology and Evol. Biology, Boulder, California, 80309, United States
7 - Rancho Santa Ana Botanic Garden, 1500 North College Ave, Claremont, CA, 91711, United States
8 - C105, Ramaley Hall, UCB350, Clare Small Building, Basement, Boulder, CO, 80309, United States
Keywords:
Acanthaceae
Macroevolution
Ruellia
floral color evolution
Anthocyanin
HPLC
floral spectral reflectance
Phylogenomics
ddRADseq.
Presentation Type: Oral Paper
Session: 42, Macroevolution II
Location: 107/Mayo Civic Center
Date: Wednesday, July 25th, 2018
Time: 2:15 PM
Number: 42004
Abstract ID:901
Candidate for Awards:None |
