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231224s2011 xx |||||o 00| ||eng c |
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|a 10.1016/j.jplph.2011.05.010
|2 doi
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|a pubmed25n0697.xml
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|a (DE-627)NLM209268808
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|a (NLM)21684033
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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1 |
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|a Wakabayashi, Kazuyuki
|e verfasserin
|4 aut
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|a Cell wall oxalate oxidase modifies the ferulate metabolism in cell walls of wheat shoots
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|c 2011
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 13.05.2013
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|a Date Revised 30.09.2020
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|a published: Print
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|a Citation Status MEDLINE
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|a Copyright © 2011 Elsevier GmbH. All rights reserved.
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|a Oxalate oxidase (OXO) utilizes oxalate to generate hydrogen peroxide, and thereby acts as a source of hydrogen peroxide. The present study was carried out to investigate whether apoplastic OXO modifies the metabolism of cell wall-bound ferulates in wheat seedlings. Histochemical staining of OXO showed that cell walls were strongly stained, indicating the presence of OXO activity in shoot walls. When native cell walls prepared from shoots were incubated with oxalate or hydrogen peroxide, the levels of ester-linked diferulic acid (DFA) isomers were significantly increased. On the other hand, the level of ester-linked ferulic acid (FA) was substantially decreased. The decrease in FA level was accounted neither by the increases in DFA levels nor by the release of FA from cell walls during the incubation. After the extraction of ester-linked ferulates, considerable ultraviolet absorption remained in the hemicellulosic and cellulose fractions, which was increased by the treatment with oxalate or hydrogen peroxide. Therefore, a part of FA esters may form tight linkages within cell wall architecture. These results suggest that cell wall OXO is capable of modifying the metabolism of ester-linked ferulates in cell walls of wheat shoots by promoting the peroxidase action via supply of hydrogen peroxide
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Coumaric Acids
|2 NLM
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|a Plant Proteins
|2 NLM
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|a diferulic acid
|2 NLM
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|a ferulic acid
|2 NLM
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|a AVM951ZWST
|2 NLM
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|a Hydrogen Peroxide
|2 NLM
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|a BBX060AN9V
|2 NLM
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|a Oxidoreductases
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|a EC 1.-
|2 NLM
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|a Peroxidase
|2 NLM
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|a EC 1.11.1.7
|2 NLM
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|a oxalate oxidase
|2 NLM
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|a EC 1.2.3.4
|2 NLM
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1 |
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|a Soga, Kouichi
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Hoson, Takayuki
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of plant physiology
|d 1979
|g 168(2011), 16 vom: 01. Nov., Seite 1997-2000
|w (DE-627)NLM098174622
|x 1618-1328
|7 nnns
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| 773 |
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|g volume:168
|g year:2011
|g number:16
|g day:01
|g month:11
|g pages:1997-2000
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|u http://dx.doi.org/10.1016/j.jplph.2011.05.010
|3 Volltext
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|d 168
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|h 1997-2000
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