Genetic Blocks in the Synthesis of Coumarin in Melilotus alba

Genetic control of coumarin biosynthesis and beta-glucosidase activity in Melilotus alba.

The biosynthesis of coumarin in Melilotus alba.

Previous investigations have shown that CY4-labeled transcinnamic acid is rapidly converted to o-coumaric acid P-glucoside by shoots of Melilotus alba (white sweet clover) (1) and Hierochlod odorata (sweet grass) (2). This glucoside is then converted to coumarin (l-3), possibly by way of trans-cis isomerization of the glucoside to coumarinic acid P-glucoside. The small amount of radioactivity f...

The Biosynthesis of Coumarin in Melilotus AZba

Previous investigations have shown that CY4-labeled transcinnamic acid is rapidly converted to o-coumaric acid P-glucoside by shoots of Melilotus alba (white sweet clover) (1) and Hierochlod odorata (sweet grass) (2). This glucoside is then converted to coumarin (l-3), possibly by way of trans-cis isomerization of the glucoside to coumarinic acid P-glucoside. The small amount of radioactivity f...

Absence of Dominance of the B Gene in Influencing ,&glucosidase Activity in Melzlotus Alba'

N sweetclover (Melilotus alba Desr.) the allelic pair designated B/b was I originally thought to be concerned with coumarin biosynthesis. Extracts of BB plants were reported to contain substantial amounts of both free and bound coumarin, while extracts of bb plants contained only bound coumarin (GOPLEN. GREENSHIELDS and BAENZIGER 1957; HASKINS and GORZ 1957), more recently identified as coumari...

Genetic control of the metabolism of O-hydroxycinnamic acid precursors in Melilotus alba.