| abstract |
From the root of rice, we isolated the 5 'upstream region of the nicotianamine synthase gene that is specifically expressed in the root, analyzed the DNA in this upstream region, and as a result of extensive studies, we controlled the gene expression specifically in the root We have succeeded in identifying a DNA sequence having a promoter function. By using the promoter of the present invention, it is possible to express a foreign gene in a root-specific manner. |