The BELL1 gene encodes a homeodomain protein involved in pattern formation in the Arabidopsis ovule primordium
Copyright policy )The BELL1 gene encodes a homeodomain protein involved in pattern formation in the Arabidopsis ovule primordium
Ovule development in Arabidopsis involves the formation of three morphologically defined proximal-distal pattern elements. Integuments arise from the central pattern element. Analysis of Bell 1 (Bel 1) mutant ovules indicated that BEL1 was required for integument development. Cloning of the BEL1 locus reveals that it encodes a homeodomain transcription factor. Prior to integument initiation, BEL1 RNA localizes to the central domain, providing molecular evidence for a central pattern element. Therefore, proximal-distal patterning of the ovule involves the regulated expression of the BEL1 gene that controls integument morphogenesis. A model for BEL1 function is evaluated with regard to new data showing the expression pattern of the floral homeotic gene AGAMOUS (AG) early in wild-type and BEL1 ovule development.
- University of British Columbia Canada
- University of California, Berkeley United States
Cell Nucleus, Homeodomain Proteins, DNA, Complementary, Base Sequence, Biochemistry, Genetics and Molecular Biology(all), Arabidopsis Proteins, Recombinant Fusion Proteins, Molecular Sequence Data, Arabidopsis, Genes, Homeobox, Genes, Plant, AGAMOUS Protein, Arabidopsis, DNA-Binding Proteins, RNA, Plant, Mutation, Amino Acid Sequence, RNA, Messenger, Cloning, Molecular, Ovum, Plant Proteins, Transcription Factors
Cell Nucleus, Homeodomain Proteins, DNA, Complementary, Base Sequence, Biochemistry, Genetics and Molecular Biology(all), Arabidopsis Proteins, Recombinant Fusion Proteins, Molecular Sequence Data, Arabidopsis, Genes, Homeobox, Genes, Plant, AGAMOUS Protein, Arabidopsis, DNA-Binding Proteins, RNA, Plant, Mutation, Amino Acid Sequence, RNA, Messenger, Cloning, Molecular, Ovum, Plant Proteins, Transcription Factors
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