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Phenylpropanoid Metabolism in Suspension Cultures of Vanilla planifolia. Andr. II. Effects of Precursor Feeding and Metabolic Inhibitors
Department of Plant Biochemistry, University of Lund.ORCID iD: 0000-0001-8899-5046
1990 (English)In: Plant Physiology, ISSN 0032-0889, E-ISSN 1532-2548, Vol. 94, p. 95-101Article in journal (Refereed) Published
Abstract [en]

Feeding of cinnamic acid and ferulic acid to non-treated andchitosan-treated cell suspension cultures of Vanilla planifoIiaresulted in the formation of trace amounts of p-hydroxy benzoicacid (5.2 micrograms per gram fresh weight of cells) and vanillicacid (6.4 micrograms per gram fresh weight of cells), respectively.Addition of a 4-hydroxycinnamate: CoA-ligase inhibitor, 3,4-(methylenedioxy)-cinnamic acid (MDCA), resulted in a reducedbiosynthesis of ligneous material with a simultaneous significantincreased vanillic acid formation (around 75 micrograms per gramfresh weight of cells). A K, of 100 micromolar for 4-hydroxycinnamate:CoA-ligase in a crude preparation was estimated for thisinhibitor. It is suggested that the conversion of cinnamic acidsinto benzoic acids does not involve cinnamoyl CoA esters asintermediates. Feeding of 14C-cinnamic acid and 14C-ferulic acidto cells treated with MDCA indicate that cinnamic acid, but notferulic acid, is a precursor of vanillic acid in these cultivated cellsof V. planifolia. 

Place, publisher, year, edition, pages
1990. Vol. 94, p. 95-101
National Category
Biochemistry and Molecular Biology
Research subject
Natural Science, Biochemistry
Identifiers
URN: urn:nbn:se:lnu:diva-580OAI: oai:DiVA.org:lnu-580DiVA, id: diva2:307310
Available from: 2010-04-01 Created: 2010-04-01 Last updated: 2017-12-12Bibliographically approved

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Brodelius, Peter

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