Part 1 Organelle genetics in lower and higher plants: organelle genetics and transformation of "chlamydomonas", J.E. Boynton et al; plastic genetics in higher plants, R. Hagemann. Part 2 Evolution of organelle genomes: comparison of chloroplast and mitochondrial genome evolution in plants, J. Palmer. Part 3 Organelle chromosomes, genes and gene expression: organization and expression of genes of plastic chromosomes from non-angiospermous land plants and green algae, K. Ohyama; plastic chromosomes from vascular plants genes, R.F. Whittier and M. Sugiura; the mitochondrial genomes of plants, D.M. Londsdale and J.M. Grienenberger; cytoplasmic male sterility, C.J. Braun et al. Part 4 Organelle biogenesis: control of plastic gene expression in "chlamydomonas reinhardtii", J.-D. Rochaix; biogenesis of plastids in higher plants, R.G. Herrmann et al. Part 5 Protein import: transport of proteins into chloroplasts, K. Keegstra and G. Heijne; components and mechanisms in mitochondrial protein import, N. Pfanner. Part 6 Glyoxysomes and peroxisomes: structure and biogenesis of glyoxysomes and peroxisomes, C. Sautter.