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Metabolism and biological activity of (+)- and (-)-C-1′-O-methyl ABA in maize suspension-cell cultures

From National Research Council Canada

DOIResolve DOI: https://doi.org/10.1016/0031-9422(96)00011-8
AuthorSearch for: 1; Search for: 1; Search for: 1; Search for: 1; Search for: 1
Affiliation
  1. National Research Council of Canada. NRC Plant Biotechnology Institute
FormatText, Article
SubjectZea mays L. Black Mexican sweet; Gramineae; abscisic acid analogues; growth inhibition; C-1'-methyl ether; metabolism; phaseic acid; electrospray
Abstract
(+)-C-1′-O-Methyl abscisic acid is rapidly metabolized by suspension-cultured maize cells (Zea mays L. Black Mexican Sweet) to (+)-C-1′-O-methyl phaseic acid in an analogous process as seen for ABA. The presence of a methyl ether on the 1′-position of ABA does not interfere with enzymic oxidation at the 8′-carbon. The metabolite is demethylated to yield phaseic acid. A small amount of abscisic acid is also produced by direct demethylation. The (+)-C-1′-O-methyl ABA exhibits stronger growth inhibitory activity of the maize cells than (+)-ABA, suggesting that a free C-1′-hydroxyl group is not essential for biological activity of ABA in maize. The (−)-C-1′-O-methyl ABA is metabolized to (−)-ABA and to 7′-hydroxyABA and the corresponding C-1′-O-methyl-7′-hydroxy ABA.
Publication date
PublisherElsevier
In
  • Phytochemistry 42, no. 3 (June 1996): 575–579.
LanguageEnglish
Peer reviewedYes
Identifier0031942296000118
NRCC-40014
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Record identifier25580699-2a9a-4908-b105-de71b9705a41
Record created2023-11-02
Record modified2023-11-02
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