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231223s2004 xx ||||| 00| ||eng c |
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|a (NLM)15128022
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|a DE-627
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|e rakwb
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|a eng
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| 100 |
1 |
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|a Qin, Wen-Min
|e verfasserin
|4 aut
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|a Involvement of NADPH oxidase in hydrogen peroxide accumulation by Aspergillus niger elicitor-induced Taxus chinensis cell cultures
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| 264 |
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|c 2004
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|a Text
|b txt
|2 rdacontent
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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|a Band
|b nc
|2 rdacarrier
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|a Date Completed 29.06.2004
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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 After determining that hydrogen peroxide (H2O2) accumulation induced by a fungal elicitor from Aspergillus niger was from the superoxide dismutase-catalyzed dismutation of superoxide radical, the site of H2O2 generation in cell suspension cultures of Taxus chinensis was studied. The results showed that 90% and 10% of the elicitor-induced H2O2 accumulation respectively appeared in intracellular and extracellular fractions of cells, and that the elicitor-induced H2O2 accumulation in protoplasts and plasma membranes was similar to that in intact cells, indicating that the site of H2O2 accumulation was plasma membranes but not in extracellular fraction of Taxus cells. The H2O2 forming enzyme was also investigated. The elicitor-induced H2O2 accumulation in intact cells was not changed by loss of apoplastic peroxidase (POD) by the washing, and the H2O2 accumulation in plasma membranes was inhibited by the mammalian neutrophil NAD(P)H oxidase inhibitor diphenylene iodonium (DPI), but was slightly affected by exogenous POD and its inhibitor. Furthermore, in plasma membranes, the H2O2 accumulation was more significantly enhanced by NADPH than by NADH, and the former was more obviously decreased by DPI than the latter. The present results show that NADPH oxidase in plasma membranes is involved in H2O2 accumulation in fungal elicitor-induced Taxus chinensis cell cultures
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|a Journal Article
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|a Enzyme Inhibitors
|2 NLM
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|a Onium Compounds
|2 NLM
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|a NAD
|2 NLM
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|2 NLM
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|a Hydrogen Peroxide
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|a NADPH Oxidases
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|2 NLM
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1 |
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|a Lan, Wen-Zhi
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Yang, Xi
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of plant physiology
|d 1979
|g 161(2004), 4 vom: 14. Apr., Seite 355-61
|w (DE-627)NLM098174622
|x 0176-1617
|7 nnns
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| 773 |
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|g volume:161
|g year:2004
|g number:4
|g day:14
|g month:04
|g pages:355-61
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