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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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