| Abstract Detail
Reproductive Development Nag, Anwesha [1], Yang, Yingzhen [2], Jack, Thomas [3]. Understanding the role of DORNRĂ–SCHEN-LIKE in Arabidopsis flower development. To identify novel genes in petal and stamen development, a genetic screen was carried out to look for enhancers of the unusual B class mutant pistillata-5 (pi-5). In pi-5 flowers, second whorl organs are sepals rather than petals, but third whorls stamens are normal. One pi-5 enhancer, dornröschen-like-2 (drnl-2), results in third whorl positions developing as filamentous organs. In addition to enhancing the pi-5 phenotype, drnl-2 mutants also exhibits a phenotype in a wild-type PI background. Although stamen primordia are morphologically visible during early stages of flower development in drnl-2, they fail to enlarge suggesting that DRNL plays a key role in stamen primordia emergence. DRNL, which encodes a single AP2 domain protein, is expressed in very restricted domains in the embryo, leaves, and flowers. DRNL is expressed more strongly in organ primordia and emerging young organs and less strongly in mature organs. Here we present our current understanding of DRNL’s role in flower development.
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1 - Dartmouth College, Department of Biological Sciences, Dartmouth College, Hanover, NH, 03755, USA
2 - University of California at San Diego, Section of Cell and Developmental Biology
3 - Dartmouth College, Department of Biological Sciences
Keywords:
reproductive development
Stamen
AP2
Anther
Arabidopsis.
Presentation Type: Plant Biology Abstract
Session: P
Location: Exhibit Hall (Northeast, Southwest & Southeast)/Hilton
Date: Sunday, July 8th, 2007
Time: 8:00 AM
Number: P28027
Abstract ID:828 |
