The invention discloses a 5'UTR sequence of a rape
oleosin gene and an application of the 5'UTR sequence in the
gene targeting expression. The 5'UTR sequence of the
oleosin gene is one of the following
nucleotide sequences: 1,
a DNA sequence represented by SEQ ID NO:1 in a sequence table; and 2, a
nucleotide sequence which can be hybridized with the
DNA sequence limited by the SEQ ID NO:1 in the sequence table under highly strict conditions. The sequence represented by SEQ ID NO:1 and other elements construct a
plant expression vector pGOT which comprises the following four complete expression boxes: a P35S-codA-Tnos expression box, a 1900bp rape
oleosin gene 5'UTR-"sesame oleosin + CT
fusion protein gene"-Pnos-NPTII-Tnos expression box, a rape oleosin gene 3'
DNA sequence expression box, and a P35S-codA-Tnos expression box. Transgenic rape plants and lines are obtained through an in planta method. According to the invention, a
gene targeting technology is utilized to insert an exogenous
target gene into the 3' terminus of the oleosin gene, so the expression of the exogenous gene in plants is greatly improved, and a new platform is established for the massive production of a medicinal
protein with a
bioreactor.