The present invention provides DNA having the promoter activity of an OsSUT1 gene, as well as a transgenic plant and others capable of expressing a desired foreign gene specifically in the vascular bundle or the phloem thereof, using the above DNA as a promoter.According to the present invention, DNA having the promoter activity of the OsSUT1 gene was isolated from the genomic library of rice (Oryza sativa L.) The DNA has a promoter sequence, which has a phloem specificity and a growing time specificity and exists in a nucleotide sequence shown in SEQ ID NO: 1. A transgenic plant expressing a foreign gene specifically in the phloem or in the vascular bundle system tissues was produced by ligating the desired foreign gene downstream of the promoter DNA and incorporating it into the genome of a plant.