Occurrence and metabolism of 1',4'-trans-diol of abscisic acid

Abstract The 1′,4′- trans -diol of abscisic acid was first identified in higher plants with GC-ECD and GC-SIM. The 2 H-labelled derivative was converted into abscisic acid (ABA) in pea and avocado, but 2 H-labelled ABA was not converted into the diol. These results suggest that the diol is one of the precursors of ABA in higher plants.