Cell wall oxalate oxidase modifies the ferulate metabolism in cell walls of wheat shoots

Wakabayashi, Kazuyuki; Soga, Kouichi; Hoson, Takayuki

doi:10.1016/j.jplph.2011.05.010

Cited by 7 publications

(6 citation statements)

References 32 publications

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“…Our previous study showed that the cell walls of etiolated (dark-grown) rice shoots contained three major DFA isomers: 5–5, 8- O -4, and 8–5 (8–5 benzofuran) forms [ 20 ]. A similar distribution of DFA isomers has been observed in the cell walls of wheat shoots [ 37 , 38 ]. The amounts per shoot of these three DFA isomers increased substantially from 4 d to 5.3 d ( Fig 3 ), as did FA content ( Fig 2 ).…”

Section: Resultssupporting

confidence: 74%

Suppression of Hydroxycinnamate Network Formation in Cell Walls of Rice Shoots Grown under Microgravity Conditions in Space

et al. 2015

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Network structures created by hydroxycinnamate cross-links within the cell wall architecture of gramineous plants make the cell wall resistant to the gravitational force of the earth. In this study, the effects of microgravity on the formation of cell wall-bound hydroxycinnamates were examined using etiolated rice shoots simultaneously grown under artificial 1 g and microgravity conditions in the Cell Biology Experiment Facility on the International Space Station. Measurement of the mechanical properties of cell walls showed that shoot cell walls became stiff during the growth period and that microgravity suppressed this stiffening. Amounts of cell wall polysaccharides, cell wall-bound phenolic acids, and lignin in rice shoots increased as the shoot grew. Microgravity did not influence changes in the amounts of cell wall polysaccharides or phenolic acid monomers such as ferulic acid (FA) and p-coumaric acid, but it suppressed increases in diferulic acid (DFA) isomers and lignin. Activities of the enzymes phenylalanine ammonia-lyase (PAL) and cell wall-bound peroxidase (CW-PRX) in shoots also increased as the shoot grew. PAL activity in microgravity-grown shoots was almost comparable to that in artificial 1 g-grown shoots, while CW-PRX activity increased less in microgravity-grown shoots than in artificial 1 g-grown shoots. Furthermore, the increases in expression levels of some class III peroxidase genes were reduced under microgravity conditions. These results suggest that a microgravity environment modifies the expression levels of certain class III peroxidase genes in rice shoots, that the resultant reduction of CW-PRX activity may be involved in suppressing DFA formation and lignin polymerization, and that this suppression may cause a decrease in cross-linkages within the cell wall architecture. The reduction in intra-network structures may contribute to keeping the cell wall loose under microgravity conditions.

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Section: Resultssupporting

confidence: 74%

Suppression of Hydroxycinnamate Network Formation in Cell Walls of Rice Shoots Grown under Microgravity Conditions in Space

et al. 2015

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“…From the chromatogram on HPLC analysis in the present study and reported information by Parr et al (1996) and Waldron et al (1996), the 8-5 DFA may be the benzofuran form. A similar distribution of DFA isomers was observed in cell walls of wheat shoots (Obel et al, 2002;Wakabayashi et al, 2011). Therefore, FA may be coupled into a variety of dehydrodimers.…”

Section: Amounts Of Cell Wall Polysaccharides and Wall-bound Ferulatessupporting

confidence: 67%

Phenylalanine ammonia-lyase and cell wall peroxidase are cooperatively involved in the extensive formation of ferulate network in cell walls of developing rice shoots

Wakabayashi

Soga

Hoson

2012

Journal of Plant Physiology

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“…The observation that: (i) apoplastic fluids containing peroxidases and germin-like proteins with oxalate oxidase activity preferentially accumulated in the 42 d VTZ; (ii) enhanced VTZ methyl esterification in comparison with the 42 d SAM; and (iii) evidence of low temperature-induced diferulic acid ( Wakabayashi et al , 2011 ) collectively suggest that cold acclimation may result in preferential formation of diferulic wall linkages in the VTZ. If so, this would increase cell wall mechanical resistance to ice propagation ( Rajashekar and Lafta, 1996 ).…”

Section: Discussionmentioning

confidence: 99%

“…The SAM and VTZ accumulated tissue-specific peroxidases in response to cold acclimation. In the VTZ, the increase in methyl esterification could be associated with increased abundance of peroxidase and Germin B proteins that play a role in peroxide-mediated diferulic cross-linking of glucuronoarabinoxylans ( Wakabayashi et al , 2011 ; Hatfield et al , 2016 ). These peroxidases act as a defensive response to pathogenic attack in the VTZ post-thawing ( Olien and Marchetti, 1976 ).…”

Section: Discussionmentioning

confidence: 99%

Tissue-specific changes in apoplastic proteins and cell wall structure during cold acclimation of winter wheat crowns

Willick

Takahashi

Fowler

et al. 2018

Journal of Experimental Botany

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Cell wall oxalate oxidase modifies the ferulate metabolism in cell walls of wheat shoots

Cited by 7 publications

References 32 publications

Suppression of Hydroxycinnamate Network Formation in Cell Walls of Rice Shoots Grown under Microgravity Conditions in Space

Suppression of Hydroxycinnamate Network Formation in Cell Walls of Rice Shoots Grown under Microgravity Conditions in Space

Phenylalanine ammonia-lyase and cell wall peroxidase are cooperatively involved in the extensive formation of ferulate network in cell walls of developing rice shoots

Tissue-specific changes in apoplastic proteins and cell wall structure during cold acclimation of winter wheat crowns

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