Benoit St-Pierre

TL;DR: It is concluded that the elaboration of the major leaf alkaloids involves the participation of at least two cell types and requires the intercellular translocation of a pathway intermediate.

TL;DR: The molecular characterization of CYP72A1 from Catharanthus roseus (Madagascar periwinkle) was described nearly a decade ago, but the enzyme function remained unknown, and it is shown by in situ hybridization and immunohistochemistry that the expression in immature leaves is epidermis-specific.

TL;DR: The involvement of some of these genes in epicuticular wax biosynthesis, fruit-ripening and in benzoyltransfer reactions indicates that the plant kingdom contains a superfamily of multifunctional acyltransferases which operate by a reaction mechanism related to the ancient chloramphenicol O-acetyltransferase and dihydrolipoyl acetyl transferase class of enzymes.

TL;DR: The chapter describes a recently characterized acyltransferase superfamily from higher plants and fungi, with a special emphasis on the acyl transferases of Arabidopsis thaliana, whose genome is being completely sequenced.

TL;DR: It is predicted that the translocation of pathway intermediates from the internal phloem parenchyma to the epidermis and, ultimately, to laticifers and idioblasts during MIA biosynthesis is likely to be required.