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Abstract Detail



Developmental and Structural Section

Trivedi, Kshitij [1], Norton, Christian [1], Lacroix, Christian [2].

Study of expression of organ identity genes in the flowers of Hibiscus rosa-sinensis (Malvaceae).

Hibiscus rosa-sinensis L. (Malvaceae) consists of two types of floral morphologies: single (wild-type) and double (mutant). The double floral form displays additional floral organs of mixed identity combining features of stamens and petals (homeotic organs) in addition to typical organs such as sepals, petals, stamens, and ovary. This activity takes place in the ring-shaped pentamerous meristematic region of the floral primordium where typical petals and stamens are initiated. The most commonly accepted and used model of floral development is referred to as the ABC model, where the overlap in activity of organ identity genes within each of these classes determines floral organ identity. This research project focuses on molecular aspects of the ABC model of floral development in H. rosa-sinensis with emphasis on studying the underlying activity of organ identity genes of classes A, B and C. Representative homologs of A, B and C-like genes were isolated in H. rosa-sinensis and characterized. The activity of these genes was examined and compared between two types of floral morphologies using In situ hybridization to confirm the extent of the domains of expression of organ identity genes during early stages of floral development.


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1 - University of Prince Edward Island, Biology, 550 University Avenue, Charlottetown, PE, C1A4P3, Canada
2 - University Of Prince Edward Island, Department Of Biology, 550 University Ave, Charlottetown, PE, C1A 4P3, Canada

Keywords:
floral development
organ identity genes
Hibiscus
ABC model
homeosis.

Presentation Type: Oral Paper:Papers for Sections
Session: 45
Location: Salon 11/The Shaw Conference Centre
Date: Tuesday, July 28th, 2015
Time: 2:45 PM
Number: 45006
Abstract ID:385
Candidate for Awards:Katherine Esau Award,Maynard F. Moseley Award,Cinq Mars Award


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