4.2.1.139 up the activities of vestitone reductase and 7,2'-dihydroxy-4'-methoxyisoflavanol dehydratase increase approximately 3fold 6 hours after elicitor treatment in alfalfa suspension cell culture. The activities remain at maximal levels for 40 hours, correlating with a steady increase in the medicarpin content of the cells 722250 4.2.1.139 up the enzyme expression is induced in roots by ethylene -, 748707