ABSTRACT
Objective Using the soaking seedling method to introduce wild Gastrodia elata DNA into potato plantlets and analyze gastrodin of transformed Solanum tuberosum.Methods After the tuber grown up,the solution of gastrodin was extracted from the potatoes which were transformed by wild G.(elata) DNA.The transformed plants were scaned by ultraviolet.PCR was used to analyze GAFP gene by SDS-PAGE.TLC was used to analyze the gastrodin of transformed S.tuberosum.Results(1)The 21 transformed plants had obvious absorption peak at 220 nm in 200 transformed S.tuberosunr.(2)The fragment of wild G.elata GAFP gene was found by PCR from 5 transformed plants.(3)The protein expressions in transgenic S.tuberosum were obviously different from the normal S.tuberosum;a band was detected in transgenic S.tuberosum and wild G.elata,but wasn't detected in normal S.tuberosum.(4)The expression of the gastrodin was detected by TLC from three transformed plants. Conclusion It is feasible to use the soaking seedling method to introduce exogenous DNA into plants.