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Abstract Detail


Reproductive Development

Nole-Wilson, Staci [1], Azhakanandam, Sridevi [2], Franks, Robert G. [2].

AINTEGUMENTA and REVOLUTA are Involved in Apical-Basal Patterning of the Gynoecium in Arabidopsis thaliana.

A unique feature defining angiosperms is the female reproductive structure, known as the gynoecium, which provides a protective environment for ovule development. The gynoecium of Arabidopsis thaliana can be divided into three regions along its apical-basal axis. The stigma and style comprise the most apical regions of the gynoecium, while the middle region consists of the ovary which houses the ovules. The gynophore comprises the most basal region and serves to connect the gynoecium to the pedicel. Proper patterning along this apical-basal axis is crucial for gynoecium development. The AP2/ERF transcription factor AINTEGUMENTA (ANT) and the Class III HD-ZIP family member REVOLUTA (REV) are important regulators of Arabidopsis development. Recent work in our lab has focused on the relationship between ANT and REV in gynocium development. The generation of rev ant double mutants leads to synergistic effects on the apical-basal patterning of the gynoecium. In recent years, the phytohormone auxin has been hypothesized to be an important regulator of apical-basal patterning in the Arabidopsis gynoecium. Our analysis of rev ant carpel phenotypes suggests that ANT and REV may function in parallel pathways to affect gynoecial development. The relationship of ANT and REV to auxin-mediated patterning events is currently under investigation.


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1 - North Carolina State University, Department of Genetics, Box 7614, Raleigh, NC, 27695, USA
2 - North Carolina State University, Department of Genetics

Keywords:
AINTEGUMENTA
REVOLUTA
gynoecium.

Presentation Type: Plant Biology Abstract
Session: P
Location: Exhibit Hall (Northeast, Southwest & Southeast)/Hilton
Date: Sunday, July 8th, 2007
Time: 8:00 AM
Number: P28045
Abstract ID:1671


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