Coordinate induction of glutathione biosynthesis and glutathione-metabolizing enzymes is correlated with salt tolerance in tomato

A - Papers appearing in refereed journals

Mittova, V., Theodoulou, F. L., Kiddle, G., Gomez, L., Volokita, M., Tal, M., Foyer, C. H. and Guy, M. 2003. Coordinate induction of glutathione biosynthesis and glutathione-metabolizing enzymes is correlated with salt tolerance in tomato. FEBS Letters. 554 (3), pp. 417-421.

AuthorsMittova, V., Theodoulou, F. L., Kiddle, G., Gomez, L., Volokita, M., Tal, M., Foyer, C. H. and Guy, M.
Abstract

The acclimation of reduced glutathione (GSH) biosynthesis and GSH-utilizing enzymes to salt stress was studied in two tomato species that differ in stress tolerance. Salt increased GSH content and GSH:GSSG (oxidized glutathione) ratio in oxidative stress-tolerant Lycopersicon pennellii (Lpa) but not in Lycopersicon esculentum (Lem). These changes were associated with salt-induced upregulation of gamma-glutamylcysteine synthetase protein, an effect which was prevented by preincubation with buthionine sulfoximine. Salt treatment induced glutathione peroxidase and glutathione-S-transferase but not glutathione reductase activities in Lpa. These results suggest a mechanism of coordinate upregulation of synthesis and metabolism of GSH in Lpa, that is absent from Lem. (C) 2003 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved.

KeywordsBiochemistry & Molecular Biology; Biophysics; Cell Biology
Year of Publication2003
JournalFEBS Letters
Journal citation554 (3), pp. 417-421
Digital Object Identifier (DOI)doi:10.1016/S0014-5793(03)01214-6
PubMed ID14623104
Open accessPublished as non-open access
Funder project or code413
503
521
Cloning and characterisation of genes involved in xenobiotic metabolism
Redox signalling and oxidative-stress-mediated control of plant growth and development
ISSN00145793
PublisherWiley

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