title: Metabolism of 2-C-(+/-)-abscisic Acid in excised bean axes.
abstract: Excised embryonic bean axes (Phaseolus vulgaris, var. White Marrowfat) rapidly metabolize 2-(14)C-(+/-)-abscisic acid to two compounds, M-1 and M-2, which have very low growth-inhibitory activity. Chemical tests indicate the M-1 and M-2 are not previously described abscisic acid metabolites. M-2 accumulates in the axes and evidence is presented for the hypothesis that abscisic acid --> M-1 --> M-2. Zeatin, which partially reverses the abscisic acid-mediated growth inhibition of axes, neither decreases abscisic acid uptake nor causes any major changes in its metabolism. It was observed that axes transferred from abscisic acid-containing solutions to buffer resume control rates of fresh weight increase while still containing considerable quantities of abscisic acid.
authors.affiliation: Department of Chemistry, Plant Physiology-Biochemistry Group, SUNY College of Forestry at Syracuse University, Syracuse, New York 13210.
authors.forename: D C
authors.initials: DC
authors.lastname: Walton
authors.forename: E
authors.initials: E
authors.lastname: Sondheimer