Foreign Protein Expression in Chloroplast Transformation of Phaeodactylum tricornutum CHLOROPLAST GENETIC TRANSFORMATION AND THE LATEST PROGRESS OF ITS APPLICATION IN CROP IMPROVEMENT Herbicide Resistance Gene (bar) was Introduced into the Chloroplast of Tobacco Establishment of a Novel Prokaryotic Inducible Expression System Mutation of Residue Arginine18 of Cytochrome b55α-Subunit and its Effects on Photosystem II Activities in Chlamydomonas reinhardtii Studies on Insect Resistance of Bt Transplastomic Plants and the Phenotype of Their Progenies