| Abstract: | [Objective] The aim of the study is to done the 5' flanking region of Sporamin A gene from sweet potato. [Method] The sweet potato "Xushu 18" was used to amplify the 5' flanking region of Sporamin A gene using specifically designed primers and then target fragment was analyzed by PLACE and PlantCare online. [Result] Besides the conserved elements including TATA-box and CAAT-box, the cis-acting elements including sucrose re- sponsive element CMSREI, SP8 acting site and some other regulatory sequence such as MTB binding site were also found in Spo A promoter sequence. The results suggest that the promoter has sucrose responsive function. [Conclusion] The study provided reference to reveal the regulation law of Spo A, and to develop high-level expression vectors promoted by Spo A promoter. |
