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Published on: June 11, 2010
The petunia AGL6 gene has a SEPALLATA-like function in floral patterning
Anneke S Rijpkema1, Jan Zethof, Tom Gerats
1Plant Genetics, IWWR, Radboud University Nijmegen, 6525 ED, Nijmegen, The Netherlands.
The Plant Journal : for Cell and Molecular Biology
|May 21, 2009
Summary
Petunia AGL6-like genes, like PhAGL6, function with SEP genes in petal and anther development. This research clarifies the elusive function of AGL6-like MADS-box genes in flowering plants.
Area of Science:
- Plant developmental genetics
- Molecular evolution of MADS-box genes
Background:
- SEPALLATA (SEP) MADS-box genes regulate floral development in angiosperms.
- AGL6-like genes, related to SEP genes, are found in gymnosperms but their function is unknown.
- No loss-of-function mutants for AGL6-like genes have been reported.
Purpose of the Study:
- To characterize the Petunia hybrida AGL6 (PhAGL6) gene.
- To investigate the function of PhAGL6 in floral development.
- To explore the relationship between AGL6-like and SEP genes.
Main Methods:
- Gene characterization of PhAGL6 in Petunia hybrida.
- Analysis of gene function through genetic redundancy studies.
- Protein-protein interaction assays (in vitro).
- Expression pattern analysis of PhAGL6.
Main Results:
- PhAGL6 functions redundantly with SEP genes (FBP2, FBP5) in petal and anther development.
- Expression analysis suggests PhAGL6 involvement in ovary and ovule development.
- PhAGL6 and FBP2 proteins interact with similar partners in vitro.
Conclusions:
- AGL6-like genes have conserved functions with SEP genes in angiosperms.
- PhAGL6 plays a role in floral organ development, particularly petals and anthers.
- Further research on gymnosperm AGL6-like genes is warranted to understand their evolutionary roles.
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