The mitochondrial glutathione peroxidase GPX3 is essential for H2O2 homeostasis and root and shoot development in rice

Copyright © 2013 Elsevier Ireland Ltd. All rights reserved.

Bibliographische Detailangaben
Veröffentlicht in:Plant science : an international journal of experimental plant biology. - 1985. - 208(2013) vom: 17. Juli, Seite 93-101
1. Verfasser: Passaia, Gisele (VerfasserIn)
Weitere Verfasser: Fonini, Leila Spagnolo, Caverzan, Andréia, Jardim-Messeder, Douglas, Christoff, Ana Paula, Gaeta, Marcos Letaif, de Araujo Mariath, Jorge Ernesto, Margis, Rogério, Margis-Pinheiro, Marcia
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2013
Zugriff auf das übergeordnete Werk:Plant science : an international journal of experimental plant biology
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Plant Proteins Hydrogen Peroxide BBX060AN9V Glutathione Peroxidase EC 1.11.1.9
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520 |a Glutathione (GSH) peroxidases (GPXs: EC 1.11.1.9 and EC1.11.1.12) are non-heme thiol peroxidases that catalyze the reduction of H2O2 or organic hydroperoxides to water, and they have been identified in almost all kingdoms of life. The rice glutathione peroxidase (OsGPX) gene family is comprised of 5 members spread throughout a range of sub cellular compartments. The OsGPX gene family is induced in response to exogenous H2O2 and cold stress. In contrast, they are down regulated in response to drought and UV-B light treatments. Transgenic rice plants have been generated that lack mitochondrial OsGPX3. These GPX3s plants showed shorter roots and shoots compared to non-transformed (NT) plants, and higher amounts of H2O2 mitochondrial release were observed in the roots of these plants cultivated under normal conditions. This accumulation of H2O2 is positively associated with shorter root length in GPX3s plants compared to NT ones. Moreover, GPX3 promoter analysis indicated that it is mainly expressed in root tissue. These results suggest that silencing the mitochondrial OsGPX3 gene impairs normal plant development and leads to a stress-induced morphogenic response via H2O2 accumulation 
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700 1 |a Fonini, Leila Spagnolo  |e verfasserin  |4 aut 
700 1 |a Caverzan, Andréia  |e verfasserin  |4 aut 
700 1 |a Jardim-Messeder, Douglas  |e verfasserin  |4 aut 
700 1 |a Christoff, Ana Paula  |e verfasserin  |4 aut 
700 1 |a Gaeta, Marcos Letaif  |e verfasserin  |4 aut 
700 1 |a de Araujo Mariath, Jorge Ernesto  |e verfasserin  |4 aut 
700 1 |a Margis, Rogério  |e verfasserin  |4 aut 
700 1 |a Margis-Pinheiro, Marcia  |e verfasserin  |4 aut 
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