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. 1972 Mar;49(3):285-9.
doi: 10.1104/pp.49.3.285.

Metabolism of 2-C-(+/-)-abscisic Acid in excised bean axes

D C Walton  1 , E Sondheimer
Affiliations

Metabolism of 2-C-(+/-)-abscisic Acid in excised bean axes

D C Walton et al. Plant Physiol. 1972 Mar.

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.

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References

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    1. Plant Physiol. 1970 Aug;46(2):186-9 - PubMed
    1. Plant Physiol. 1971 Apr;47(4):516-20 - PubMed
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