Method for producing foreign polypeptide in plant intercellular fluid

Abstract

The invention relates to a method for producing a foreign polypeptide comprising secreting the foreign polypeptide into an intercellular fluid of a plant and recovering the polypeptide therefrom; and to a promoter DNA for use in the method which is capable of directing the expression of the foreign polypeptide that is to be secreted. The method is extremely useful industrially, since the method enables to produce a foreign polypeptide in a plant xylem sap with high efficiency.

Dependencies are inferred from the claim text.