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Abstract Detail


Reproductive Development

Kanrar, Siddhartha [1], Becerra, Benjamin [2], Smith, Harley [2].

Arabidopsis KNOX-BELL proteins regulate flower specification in Arabidopsis.

In flowering plants, post-embryonic development is regulated by meristems. The shoot apical meristem (SAM) initiates primordial, including leaves, internodes and axillary meristems, repetitively from its flanks. Axillary meristems can develop into secondary shoots or flowers. In Arabidopsis, two paralogous BEL1-like (BELL) homeobox genes, PENNYWISE (PNY) and POUNDFOOLISH (PNF) are expressed in morphogenic region of the SAM. These homeobox genes encode DNA-binding proteins that are essential for specifying floral primordial and establishing early internode patterning events during inflorescence development. Biochemical studies showed that PNY and PNF associate with the knotted1-like homeobox (KNOX) protein SHOOT MERISTEMLESS (STM) and regulate inflorescence architecture during reproductive development. We are utilizing proteomic, genetic and molecular approaches to understand the molecular mechanisms of PNY/PNF-STM heterodimers and their role in floral specification. Results generated from these studies will be presented in the symposium.


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1 - Center for Plant Cell Biology, Institute for Integrative Genome Biolog, Botany and Plant Sciences, 2150 Batchelor Hall, Riverside, CA, 92521, USA
2 - Center for Plant Cell Biology, Institute for Integrative Genome Biolog, Botany and Plant Sciences
3 - Center for Plant Cell Biology, Institute for Integrative Genome Biolog, Botany and Plant Sciences

Keywords:
KNOX-BELL
floral induction
floral specification.

Presentation Type: Plant Biology Abstract
Session: P
Location: Exhibit Hall (Northeast, Southwest & Southeast)/Hilton
Date: Sunday, July 8th, 2007
Time: 8:00 AM
Number: P28019
Abstract ID:390


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