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Abstract Detail



Emerging Leader Lecture

Smith, Stacey [1].

Mechanisms of flower color convergence above and below the species level.

Convergent flower colors often, but not always, arise through similar genetic changes in pigment pathways. One explanation for the frequency of this molecular convergence is the selective filtering of mutations, whereby a certain subset of mutations is preferentially fixed over evolutionary time. Testing this hypothesis requires comparing the genetic and developmental basis for convergent phenotypes at multiple evolutionary timescales, e.g. within populations, between populations, or between species. I will discuss the mechanisms responsible for convergent shifts in floral anthocyanin pigmentation above and below the species level and the evidence for preferential fixation of particular genetic changes during these color shifts. I will consider these patterns in the context of what is known about the role of the anthocyanin pigments and related flavonoid compounds in plant ecology and physiology.


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1 - University of Colorado-Boulder, Dept of Ecology and Evolutionary Biology, C127 Ramaley, Campus Box 334, Boulder, CO, 80309, USA

Keywords:
Anthocyanin
Flower color polymorphism
macroevolution
pleiotropy.

Presentation Type: Special Presentation
Session: S11
Location: Hall C/The Shaw Conference Centre
Date: Wednesday, July 29th, 2015
Time: 2:30 PM
Number: S11001
Abstract ID:542
Candidate for Awards:None


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