Figures & data
Figure 1. Comparative analysis of the promoter region of SamDC gene from Arabdiopsis thaliana (Col) and rice (Oryza sativa) showing the presence of different regulatory elements. (A) Oryza sativa SamDC promoter (HM102354). (B) Arabidopsis thaliana SamDC promoter (AT3G02470). ABRE- Abscisic acid Acid Responsive Elements, ANAEROB- Anaerobic responsive element, DRE- Dehydration responsive elements, GARE- Gibberellic acid responsive element, LTRE- Low temperature responsive elements, MAR- Matrix attachment region.
Figure 2. Schematic representation of regulation of SamDC gene expression and modulation of polyamine biosynthesis in response to various environmental conditions.
Figure 3. Hypothetical model of transcriptional regulation of Polyamine biosynthesis in response to abiotic stress in rice. ABF represents the ABRE binding transcription factors, CBFS, MYB, WRKY represents the LTRE binding TFs, MYB TFs and W-box binding trans-acting factors respectively. GBFs represent the transcription factors binding to the GATA and SORLIPs respectively. Spds and Spms are spermidine synthase and spermine synthase respectively.
