Host: The Japanese Society of Plant Physiologists
Pages 0008
Arabidopsis genome contains about 2000 genes that encode the transcription factors, and about 10% of them have been suggested to be transcriptional repressors because they share the common EAR-motif that act as a repression domain. This indicates that repressors might have important roles in the regulation of gene expression as well as transcriptional activators in plants. In this study, we report novel family of repressors, which possess a novel repression domain different from known EAR-motif. When the short peptide containing the novel repression domain was fused to the transcriptional factor CUC2 and AGAMOUS, the resultant transgenic plants had similar phenotype of the loss of function of these genes. The data suggest that the novel repression domain function as a potent repression domain as in EAR-motif. Because the novel domain is found in various transcription factors and in various plant species, it may play an important role in transcriptional regulation.
