Arabidopsis LEAFY COTYLEDON1 Is Sufficient to Induce Embryo Development in Vegetative Cells
Copyright policy )Arabidopsis LEAFY COTYLEDON1 Is Sufficient to Induce Embryo Development in Vegetative Cells
The Arabidopsis LEAFY COTYLEDON1 (LEC1) gene is required for the specification of cotyledon identity and the completion of embryo maturation. We isolated the LEC1 gene and showed that it functions at an early developmental stage to maintain embryonic cell fate. The LEC1 gene encodes a transcription factor homolog, the CCAAT box-binding factor HAP3 subunit. LEC1 RNA accumulates only during seed development in embryo cell types and in endosperm tissue. Ectopic postembryonic expression of the LEC1 gene in vegetative cells induces the expression of embryo-specific genes and initiates formation of embryo-like structures. Our results suggest that LEC1 is an important regulator of embryo development that activates the transcription of genes required for both embryo morphogenesis and cellular differentiation.
- University of California, Davis United States
- University of California, Berkeley United States
- University of California, Los Angeles United States
Sequence Homology, Amino Acid, Biochemistry, Genetics and Molecular Biology(all), Arabidopsis Proteins, Molecular Sequence Data, Restriction Mapping, Arabidopsis, Genes, Plant, Plants, Genetically Modified, DNA-Binding Proteins, Gene Expression Regulation, Plant, RNA, Plant, Mutation, Seeds, CCAAT-Enhancer-Binding Proteins, Amino Acid Sequence, RNA, Messenger, Cloning, Molecular, Plant Proteins, Transcription Factors
Sequence Homology, Amino Acid, Biochemistry, Genetics and Molecular Biology(all), Arabidopsis Proteins, Molecular Sequence Data, Restriction Mapping, Arabidopsis, Genes, Plant, Plants, Genetically Modified, DNA-Binding Proteins, Gene Expression Regulation, Plant, RNA, Plant, Mutation, Seeds, CCAAT-Enhancer-Binding Proteins, Amino Acid Sequence, RNA, Messenger, Cloning, Molecular, Plant Proteins, Transcription Factors
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