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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
biochemistry, genetics and molecular biology
Cadmium affects the glutathione/glutaredoxin system in germinating pea seeds
Biological Trace Element Research, Volume 142, No. 1, Year 2011
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Description
The aim of this work was to investigate the effects of cadmium (Cd) on thiol and especially glutathione (GSH)-dependent reactions (glutathione content, glutaredoxin (Grx) content and activity, "glutathione" peroxidase (Gpx) activity, and glutathione reductase (GR) activity) in germinating pea seeds. Under Cd stress conditions, the overall activity as well as more specifically the expression of Grx C4 and Grx S12 increased. On the contrary, when incubated with Cd ions in vitro, the disulfide reductase activity of both isoforms was drastically inhibited. In the case of Grx C4, this correlated with the formation of protein dimers of 28 kDa as evidenced by electrophoresis analysis. Oxidative stress also affected the GSH status, since Cd treatment provoked (1) a pronounced stimulation in Gpx (a thioredoxin-dependent enzyme in plants) expression and (2) a drastic decrease in GR activity. These results are discussed in relation with the known contribution of Grx system to the thiol status during the germination of Cd-poisoned pea seeds. © 2010 Springer Science+Business Media, LLC.
Authors & Co-Authors
Smiri, Moêz
Tunisia, Tunis
University of Carthage
France, Vandoeouvre-les-nancy
Interactions Arbres/micro-organismes Iam
Chaoui, Abdelilah
Tunisia, Tunis
University of Carthage
Rouhier, Nicolas
France, Vandoeouvre-les-nancy
Interactions Arbres/micro-organismes Iam
Gelhaye, Eric
France, Vandoeouvre-les-nancy
Interactions Arbres/micro-organismes Iam
Jacquot, Jean-Pierre
France, Vandoeouvre-les-nancy
Interactions Arbres/micro-organismes Iam
El Ferjani, Ezzedine
Tunisia, Tunis
University of Carthage
Statistics
Citations: 42
Authors: 6
Affiliations: 2
Identifiers
Doi:
10.1007/s12011-010-8749-3
ISSN:
01634984