The Metabolism of Hormones during Seed Germination and Dormancy: IV. The Metabolism of (S)-2-14C-Abscisic Acid in Ash Seed 12

AUTOR(ES)

Sondheimer, Ernest

RESUMO

Embryos from dormant and stratified Fraxinus americana seed were incubated with (S)-2-14C-abscisic acid (ABA) under a variety of conditions. Both dormant and stratified embryos rapidly metabolize abscisic acid to phaseic acid, dihydrophaseic acid, and an unidentified polar metabolite apparently derived from dihydrophaseic acid. Although the stratified embryos may have an increased capacity to metabolize abscisic acid, our calculations suggest that such an increased capacity would probably not be physiologically significant.

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