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Abstract Detail

Evolutionary Developmental Biology (Evo-Devo)

Hall, Jocelyn [1], Patchell, Melanie [1], Bernard, Kelsey [1], Miller, Brittney [1], Mankowski, Peter [1], Stephanie, McCrea [1].

Genetic basis of floral monosymmetry in Cleomaceae.

Cleomaceae represents a promising model to investigate the basis of floral monosymmetry, a trait that has evolved many times across angiosperms. In Cleomaceae, floral monosymmetry is imparted via curvature of petals and reproductive organs upwards, which differs from most species that have been the focus of evolutionary developmental investigations. Importantly, within Cleomaceae similar mature morphologies are the result of different developmental pathways. Here we investigate the role of the TCP transcription factor family in establishing floral monosymmetry within Cleomaceae. The TCP family has been recruited in establishing monosymmetry in many taxa across angiosperms including Brassicaceae, the sister family to Cleomaceae. TCP genes have duplicated within Cleomaceae in contrast to Brassicaceae. Two copies of TCP are expressed broadly in developing flowers of Cleome violacea, corresponding to all whorls that exhibit curvature. In addition, we use virus-induced gene silencing (VIGS) to characterize the function of ClviTCP1.1 and ClviTCP1.2. Preliminary results reveal that TCP contributes towards establishing monosymmetry in C. violacea. We will compare these results to other members of Cleomaceae that exhibit a different developmental pathway to monosymmetry.

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1 - University of Alberta, Biological Sciences, CW 405 Biological Sciences Building, Edmonton, Alberta, T6G 2E9, Canada

none specified

Presentation Type: Oral Paper:Papers for Topics
Session: 42
Location: Jasperwood/Riverside Hilton
Date: Wednesday, July 31st, 2013
Time: 10:45 AM
Number: 42003
Abstract ID:435
Candidate for Awards:None

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