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The conversion of mevalonic acid into gibberellin A12-aldehyde in a cell-free system from Cucurbita pepo

The conversion of mevalonic acid into gibberellin A12-aldehyde in a cell-free system from... A cell-free system prepared from immature seed of Cucurbita pepo incorporates the label from mevalonate-2-14C into ent-kaur-16-en-19-oic acid (I), ent-7α-hydroxy-kaur-16-en-19-oic acid (II), and ent-gibberell-16-en-7-al-19-oic acid (III) (gibberellin A12-aldehyde). The products were identified by gas liquid chromatography and by combined gas chromatography-mass spectrometry of the methylated and trimethylsilylated fractions. The radioactivity of the compounds was established by recrystallisation to constant specific radioactivity. Gibberellin A12 (IV), also detected in the system after incubation by combined gas chromatographymass spectrometry may be an artefact, derived from gibberellin A12-aldehyde by a non-enzymatic conversion. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Planta Springer Journals

The conversion of mevalonic acid into gibberellin A12-aldehyde in a cell-free system from Cucurbita pepo

Planta , Volume 102 (3) – Sep 13, 2004

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References (26)

Publisher
Springer Journals
Copyright
Copyright © 1972 by Springer-Verlag
Subject
Life Sciences; Plant Sciences; Agriculture; Ecology; Forestry
ISSN
0032-0935
eISSN
1432-2048
DOI
10.1007/BF00386896
Publisher site
See Article on Publisher Site

Abstract

A cell-free system prepared from immature seed of Cucurbita pepo incorporates the label from mevalonate-2-14C into ent-kaur-16-en-19-oic acid (I), ent-7α-hydroxy-kaur-16-en-19-oic acid (II), and ent-gibberell-16-en-7-al-19-oic acid (III) (gibberellin A12-aldehyde). The products were identified by gas liquid chromatography and by combined gas chromatography-mass spectrometry of the methylated and trimethylsilylated fractions. The radioactivity of the compounds was established by recrystallisation to constant specific radioactivity. Gibberellin A12 (IV), also detected in the system after incubation by combined gas chromatographymass spectrometry may be an artefact, derived from gibberellin A12-aldehyde by a non-enzymatic conversion.

Journal

PlantaSpringer Journals

Published: Sep 13, 2004

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