A forthcoming paper in the Annual Review of Plant Biology looks really interesting: Plastid Evolution. Written by Sven Gould, Ross Waller and Geoffrey McFadden of the University of Melbourne, it looks really promising. From the abstract:
Gould, S.B., Waller, R.F. and McFadden, G.I. 2008. Plastid Evolution. Annual Review of Plant Biology 59
We review the origins, integration, and functions of the different plastid types with special emphasis on their biochemical abilities, transfer of genes to the host, and the back supply of proteins to the endosymbiont.