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The phenolic profile of maize primary cell wall changes in cellulose-deficient cell cultures
Universidad de León.
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2010 (English)In: Phytochemistry, ISSN 0031-9422, E-ISSN 1873-3700, Vol. 71, no 14-15, 1684-1689 p.Article in journal (Refereed) Published
Abstract [en]

Cultured maize cells habituated to grow in the presence of the cellulose synthesis inhibitor dichlobenil (DCB) have a modified cell wall in which the amounts of cellulose are reduced and the amounts of arabinoxylan increased. This paper examines the contribution of cell wall-esterified hydroxycinnamates to the mechanism of DCB habituation. For this purpose, differences in the phenolic composition of DCB-habituated and non-habituated cell walls, throughout the cell culture cycle and the habituation process were characterized by HPLC. DCB habituation was accompanied by a net enrichment in cell wall phenolics irrespective of the cell culture phase. The amount of monomeric phenolics was 2-fold higher in habituated cell walls. Moreover, habituated cell walls were notably enriched in p-coumaric acid. Dehydrodimers were 5-6-fold enhanced as a result of DCB habituation and the steep increase in 8,5'-diferulic acid in habituated cell walls would suggest that this dehydrodimer plays a role in DCB habituation. In summary, the results obtained indicate that cell wall phenolics increased as a consequence of DCB habituation, and suggest that they would play a role in maintaining the functionality of a cellulose impoverished cell wall.

Place, publisher, year, edition, pages
2010. Vol. 71, no 14-15, 1684-1689 p.
Keyword [en]
Zea mays, Maize, Cell wall, DCB, Dichlobenil, Hydroxycinnamate, Ferulic acid, p-Coumaric acid, HPLC
National Category
Biochemistry and Molecular Biology
Identifiers
URN: urn:nbn:se:kth:diva-66491DOI: 10.1016/j.phytochem.2010.06.013ISI: 000282453900009PubMedID: 20638694OAI: oai:DiVA.org:kth-66491DiVA: diva2:499039
Note
QC 20120229Available from: 2012-02-13 Created: 2012-01-26 Last updated: 2017-12-07Bibliographically approved

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CiteExportLink to record
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  • apa
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