| Gene Information | |
| NCBI Gene ID | 835710 |
| Symbol | ATMYB103/ATMYB80/MS188/MYB103 |
| LocusTag | AT5G56110 |
| Synonyms | ATMYB103|ATMYB80|MALE STERILE 188|MDA7.17|MDA7_17|MS188|MYB DOMAIN PROTEIN 103|MYB DOMAIN PROTEIN 80|MYB103|TRANSCRIPTION FACTOR MYB103 |
| Description | ATMYB103/ATMYB80/MS188/MYB103 (MYB DOMAIN PROTEIN 80); DNA binding / transcription factor |
| Gene Type | protein-coding |
| Pattern | ATMYB103/ATMYB80/MS188/MYB103|AT5G56110|ATMYB103|ATMYB80|MALE STERILE 188|MDA7.17|MDA7_17|MS188|MYB DOMAIN PROTEIN 103|MYB DOMAIN PROTEIN 80|MYB103|TRANSCRIPTION FACTOR MYB103|ATMYB103/ATMYB80/MS188/MYB103 (MYB DOMAIN PROTEIN 80); DNA binding / transcription factor |
| Corresponding sequence in Trichome EST library | BI927543 BP526619 EB443081 |
| Reference |
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Suppression and restoration of male fertility using a transcription factor. Li SF, Iacuone S, Parish RW. Plant Biotechnol J. 2007 Mar;5(2):297-312. ...... The Arabidopsis AtMYB103 gene codes for an R2R3 MYB domain protein whose expression is restricted to the tapetum of developing anthers and to trichomes. Down-regulation of expression using anti-sense leads to abnormal tapetum and pollen development, although seed ...... |
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...... still occurs (Higginson, T., Li, S.F. and Parish, R.W. (2003) AtMYB103 regulates tapetum and trichome development in Arabidopsis thaliana. Plant J. 35, 177-192). In this study, we show that blocking the function of the AtMYB103 gene, employing either an insertion mutant or an AtMYB103EAR chimeric repressor construct under the control of the AtMYB103 promoter, results in complete male sterility and failure to set seed. These plants exhibit similar abnormalities in ...... |
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AtMYB103 regulates tapetum and trichome development in Arabidopsis thaliana. Higginson T, Li SF, Parish RW. Plant J. 2003 Jul;35(2):177-92. ...... is also expressed in trichomes. GUS expression in trichomes was obtained by incorporating the coding and 3'-untranslated regions of AtMYB103 into the promoter-GUS constructs. Sense and antisense technologies were used to downregulate AtMYB103 expression. In transgenic lines with reduced AtMYB103 transcript levels, pollen, tapetum and trichome development were altered. The majority of the pollen grains were distorted in shape and had reduced or no cytoplasmic content. Tapetal ...... |
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...... appeared in the tapetal cytoplasm. In transgenic plants, trichomes on cauline and rosette leaves produced additional branches. These overbranched trichomes contained more nuclear DNA than the wild-type trichomes. The results indicate that AtMYB103 is required for tapetal development and microsporogenesis, and negatively regulates trichome endoreduplication linked to the trichome branching. ...... |