Construction of Potato DM1-3-516-R44 (DM) Transgenic System Based on Agrobacterium Transformation
Abstract Background: The sequencing potato DM1-3-516-R44 played an irreplaceable role in the study of gene function. So far, no one research the transformation system about DM. Therefore, our experiment was studied from three aspects: plant regeneration system, optimization of agrobacterium infection conditions and the effect of hygromycin on DM. Results: A relatively suitable method for genetic transformation of DM was obtained: 1) The stem callus induction medium was MS + IAA 0.5 mg/L + 6-BA 2.0 mg/L, the leaf callus induction medium was MS + NAA 1.0mg/L + 6-BA 0.5mg/L and the shoot differentiation medium was MS + 6-BA 3.0 mg/L + ZT 0.5 mg/L. 2) The specific transformation condition was the agrobacterium concentration kept the OD600 = 0.3, and co-culture time consisted 3 days in the dark. The hygromycin concentration chose 8 mg/L to screen the transgenic plants. 3) Using hygromycin to screen about 100 transgenic shoots, 75 shoots were obtained and 53 strains were identified had target stripe by PCR technology. Conclusion: The efficiency of the transformation system we created was over 50%. It provided a good basis for the study of potato gene function.