Document Detail

Osgstu3 and osgtu4, encoding tau class glutathione S-transferases, are heavy metal- and hypoxic stress-induced and differentially salt stress-responsive in rice roots.
MedLine Citation:
PMID:  14572664     Owner:  NLM     Status:  MEDLINE    
Glutathione S-transferases (GSTs) have poorly understood roles in plant responses to environmental stresses. A polyethylene glycol (PEG)-induced tau class GST was identified in rice roots by protein microsequencing. PEG and the heavy metals Cd (20 microM), Zn (30 microM), Co and Ni rapidly and markedly induced osgstu4 and osgstu3 in rice seedling roots. Osgstu4 and osgstu3 were also induced in roots by hypoxic stress but not by cold nor heat shock. Salt stress and abscisic acid (ABA) rapidly induced osgstu3 in rice roots, whereas osgstu4 exhibited a late salt stress and no ABA response. Salicylic acid, jasmonic acid and the auxin alpha-naphthalene acetic acid triggered osgstu4 and osgstu3 expression. Osgstu4 and osgstu3 were rapidly and markedly induced by the antioxidant dithiothreitol and the strong oxidant hydrogen peroxide, which suggested that redox perturbations and reactive oxygen species are involved in their stress response regulations.
Ann Moons
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  FEBS letters     Volume:  553     ISSN:  0014-5793     ISO Abbreviation:  FEBS Lett.     Publication Date:  2003 Oct 
Date Detail:
Created Date:  2003-10-23     Completed Date:  2003-12-09     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0155157     Medline TA:  FEBS Lett     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  427-32     Citation Subset:  IM    
Department of Biology, Faculty of Science, University of Ottawa, 30 Marie Curie, K1N 6N5 ON, Ottawa, Canada.
Data Bank Information
Bank Name/Acc. No.:
GENBANK/AY271619;  AY271620
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MeSH Terms
Amino Acid Sequence
Anoxia / metabolism
Ascorbic Acid / pharmacology
Dithiothreitol / pharmacology
Enzyme Induction
Gene Expression Regulation, Plant
Genes, Plant / drug effects,  physiology*
Glutathione Transferase / biosynthesis*,  chemistry,  genetics*
Hydrogen Peroxide / pharmacology
Metals, Heavy / pharmacology*
Molecular Sequence Data
Oryza sativa / drug effects,  enzymology,  genetics*
Plant Growth Regulators / pharmacology
Plant Roots / drug effects,  enzymology,  genetics
Polyethylene Glycols / pharmacology
RNA / analysis
Sequence Analysis, Protein / methods
Sodium Chloride / pharmacology*
rac1 GTP-Binding Protein / biosynthesis,  drug effects
Reg. No./Substance:
0/Metals, Heavy; 0/Plant Growth Regulators; 0/Polyethylene Glycols; 3483-12-3/Dithiothreitol; 50-81-7/Ascorbic Acid; 63231-63-0/RNA; 7647-14-5/Sodium Chloride; 7722-84-1/Hydrogen Peroxide; EC Transferase; EC GTP-Binding Protein

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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