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The isolation of an abscisic-acid metabolite, 4'-dihydrophaseic acid, from non-imbibed Phaseolus vulgaris seed. 1973

D C Walton, and B Dorn, and J Fey
Department of Chemistry, State University of New York, College of Environmental Science and Forestry, 13210, Syracuse, New York, USA.

Naturally occurring 4'-dihydrophaseic acid (DPA) has been isolated from mature, non-imbibed bean seed. The concentrations of abscisic acid (ABA), phaseic acid (PA) and DPA in the seed were estimated to be 0.06, 0.11 and 5.95 mg/kg dry wt., respectively. The results suggest that DPA is a major inactivation product of ABA in this tissue. The possible pathway from ABA to DPA is discussed.

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