Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.14279/3264
Title: Involvement of AsA/DHA and GSH/GSSG Ratios in Gene and Protein Expression and in the Activation of Defence Mechanisms Under Abiotic Stress Conditions
Authors: Fotopoulos, Vasileios 
Ziogas, Vasileios 
Tanou, Georgia 
Molassiotis, Athanassios 
metadata.dc.contributor.other: Φωτόπουλος, Βασίλειος
Major Field of Science: Natural Sciences
Field Category: Biological Sciences
Keywords: Ascorbate;Glutathione;Redox state;Antioxidant enzymes;Gene expression;Abiotic stress;Reactive oxygen species
Issue Date: 2010
Source: Ascorbate-Glutathione Pathway and Stress Tolerance in Plants, 2010, Pages 265-302
Abstract: In a persistently changing environment there are many adverse abiotic stress conditions such as cold, heat, drought, salinity, heavy metal toxicity and oxygen deprivation, which remarkably influence plant growth and crop production. Plant cells produce oxygen radicals and their derivatives, so-called reactive oxygen species (ROS) during various processes associated with abiotic stress. Moreover, the generation of ROS is the main means for higher plants to transmit cellular signalling information concerning the changing environmental conditions. Therefore, plants have evolved inducible redox state-based sensing mechanisms that are activated or amplified in response to adverse environmental conditions. Ascorbate and glutathione, the key cellular redox buffers, are used for both detoxification of ROS and transmission of redox signals. In recent years, it has become clear that abiotic stress conditions induce changes in the reduction/oxidation (redox) state of signalling molecules, which in turn modulate gene and protein expression to increase plant acclimation to abiotic stress. This important redox state-related branch of science has given several clues in understanding the adaptive plant responses to different stressful regimes. In this chapter, an overview of the literature is briefly presented in terms of the main function of ascorbate and glutathione in plant cells. Further more, we describe how important forms of abiotic stress regulate the expression of genes and proteins involved in the ascorbate and glutathione redox sensing system.
ISBN: 9789048194049
ISSN: 9789048194032
DOI: 10.1007/978-90-481-9404-9_10
Rights: © Springer Science+Business Media B.V. 2010
Type: Book Chapter
Affiliation : Cyprus University of Technology 
Aristotle University of Thessaloniki 
Publication Type: Peer Reviewed
Appears in Collections:Κεφάλαια βιβλίων/Book chapters

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