The role of natural products in evolution (B.B. Jarvis). The evolution of phenolics in plants (H.A. Stafford). The family of chalcone synthase-related proteins: functional diversity and evolution (J. Schröder). Macrolide and polyether polyketides: biosynthesis and molecular diversity (Y.S. Tsantrizos, X.-S. Yang). Biochemical, molecular genetic, and evolutionary aspects of defense-related terpenoid metabolism in conifers (J. Bohlmann et al.). Function and evolution of plant cytochrome P450 (R.A. Kahn, F. Durst). The biosynthesis, degradation, transport and possible function of cyanogenic glucosides (P.R. Jones et al.). Two-oxoacid-dependent dioxygenases: inefficient enzymes or evolutionary driving force? (A.G. Prescott). Evolution of acyltransferase genes: origin and diversification of the BAHD superfamily of acyltransferases involved in secondary metabolism (B. St-Pierre, V. De Luca). Glycosyltransferases involved in plant secondary metabolism (T. Vogt). The methyltransferase gene superfamily: a tree with multiple branches (R.K. Ibrahim, I. Muzac). Brassinosteroids - structures, analysis and synthesis (J. Schmidt et al.). Recent advances in molecular genetic studies of the functions of brassinolide, a steroid hormone in plants (Z.-Y. Wang, J. Chory). Plant soluble sulfotransferases: structural and functional similarity with mammalian enzymes (F. Marsolais et al.).