Clade I TGACG-Motif Binding Basic Leucine Zipper Transcription Factors Mediate BLADE-ON-PETIOLE-Dependent Regulation of Development
| Autor: | Bhaswati Devi, Michael J. Bush, Ying Wang, Brenda Chisanga Salasini, Madiha Khan, Shelley R. Hepworth, Rajagopal Subramaniam |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
Zipper Physiology Amino Acid Motifs Arabidopsis Plant Development Plant Science Flowers Biology 01 natural sciences BOP1 Gene Expression Regulation Plant Genetics RNA Messenger Inflorescence Promoter Regions Genetic Gene Transcription factor News and Views Phylogeny Regulation of gene expression Arabidopsis Proteins food and beverages 15. Life on land Meristem biology.organism_classification Cell biology Up-Regulation Basic-Leucine Zipper Transcription Factors Homeobox 010606 plant biology & botany Protein Binding |
| Zdroj: | Plant Physiol |
| ISSN: | 1532-2548 |
| Popis: | Lateral organs formed by the shoot apical meristem (SAM) are separated from surrounding stem cells by regions of low growth called boundaries. Arabidopsis (Arabidopsis thaliana) BLADE-ON-PETIOLE1 (BOP1) and BOP2 represent a class of genes important for boundary patterning in land plants. Members of this family lack a DNA-binding domain and interact with TGACG-motif binding (TGA) basic Leu zipper (bZIP) transcription factors for recruitment to DNA. Here, we show that clade I bZIP transcription factors TGA1 and TGA4, previously associated with plant defense, are essential cofactors in BOP-dependent regulation of development. TGA1 and TGA4 are expressed at organ boundaries and function in the same genetic pathways as BOP1 and BOP2 required for SAM maintenance, flowering, and inflorescence architecture. Further, we show that clade I TGAs interact constitutively with BOP1 and BOP2, contributing to activation of ARABIDOPSIS THALIANA HOMEOBOX GENE1, which is needed for boundary establishment. These studies expand the functional repertoire of clade I TGA factors in development and defense. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|