Comparative Analysis of Benzoxazinoid Biosynthesis in Monocots and Dicots: Independent Recruitment of Stabilization and Activation Functions[W][OA]

摘要

Benzoxazinoids are constitutive protective compounds found in many grasses and in single dicot species. Glucosylation prevents autotoxicity, and upon attack by herbivores and pathogens, the reactive aglucon is produced. Isolation of the benzoxazinoid-specific UDP-glucosyltransferase and β-glucosidase from larkspur reveals convergent evolution of these functions in grasses and in the dicot species.