The present invention provides compositions and methods for direct
transfection of mitochondria and chloroplast DNA in living cells. More
particularly, the present invention is based on the use of viral vectors
that specifically bind to receptors uniquely found on the target
organelle. In one embodiment, as shown in FIG. 1, a eukaryotic cell
containing an organelle (1) that has been modified to express a viral
receptor (2) on the organelle's surface is provided. A viral vector (6)
comprising a desired recombinant DNA construct (3) is introduced into the
cytosol of the cell, wherein the viral vector binds to its receptor and
introduces the recombinant DNA into the interior of the organelle.