Patent ID: 6791011
Filing Date: 2004-09-14
Classification: C12N

Abstract:
A pair of parent plants for producing seeds comprising:(i) a first parent plant containing one or more gene sequences encoding a polypeptide A, and (ii) a second parent plant containing one or more gene sequences encoding a polypeptide B; wherein each of A and B, when expressed in a plant that expresses only one of A or B, is not an active enzyme, is not a regulatory protein and is not a protein which affects the functionality and/or viability and/or the structural integrity of a cell, but when expressed in a plant that expresses both A and B, A and B form an active enzyme, or a regulatory protein, or a protein which affects the structural integrity of a plant cell, wherein the one or more gene sequences encoding polypeptide A or B comprises a tapetum-specific promoter, an embryo-specific promoter, or a seed specific promoter; and wherein one or both of the polypeptides A or B is fused to a carrier protein or a protein targeting signal.