Document Detail

Salt tolerance of barley induced by the root endophyte Piriformospora indica is associated with a strong increase in antioxidants.
MedLine Citation:
PMID:  18681935     Owner:  NLM     Status:  MEDLINE    
The root endophytic basidiomycete Piriformospora indica has been shown to increase resistance against biotic stress and tolerance to abiotic stress in many plants. Biochemical mechanisms underlying P. indica-mediated salt tolerance were studied in barley (Hordeum vulgare) with special focus on antioxidants. Physiological markers for salt stress, such as metabolic activity, fatty acid composition, lipid peroxidation, ascorbate concentration and activities of catalase, ascorbate peroxidase, dehydroascorbate reductase, monodehydroascorbate reductase and glutathione reductase enzymes were assessed. Root colonization by P. indica increased plant growth and attenuated the NaCl-induced lipid peroxidation, metabolic heat efflux and fatty acid desaturation in leaves of the salt-sensitive barley cultivar Ingrid. The endophyte significantly elevated the amount of ascorbic acid and increased the activities of antioxidant enzymes in barley roots under salt stress conditions. Likewise, a sustained up-regulation of the antioxidative system was demonstrated in NaCl-treated roots of the salt-tolerant barley cultivar California Mariout, irrespective of plant colonization by P. indica. These findings suggest that antioxidants might play a role in both inherited and endophyte-mediated plant tolerance to salinity.
Helmut Baltruschat; József Fodor; Borbála D Harrach; Elzbieta Niemczyk; Balázs Barna; Gábor Gullner; Anna Janeczko; Karl-Heinz Kogel; Patrick Schäfer; Ildikó Schwarczinger; Alga Zuccaro; Andrzej Skoczowski
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2008-08-04
Journal Detail:
Title:  The New phytologist     Volume:  180     ISSN:  1469-8137     ISO Abbreviation:  New Phytol.     Publication Date:  2008  
Date Detail:
Created Date:  2009-01-13     Completed Date:  2009-03-03     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9882884     Medline TA:  New Phytol     Country:  England    
Other Details:
Languages:  eng     Pagination:  501-10     Citation Subset:  IM    
Institute of Phytopathology and Applied Zoology, Justus Liebig University Giessen, Heinrich-Buff-Ring 26-32, D-35392 Giessen, Germany.
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MeSH Terms
Analysis of Variance
Antioxidants / metabolism*
Ascorbic Acid / metabolism
Basidiomycota / metabolism*
Fatty Acids / analysis
Hordeum / growth & development,  metabolism*
Hot Temperature
Lipid Peroxidation / physiology
Mycorrhizae / metabolism*
Plant Roots / metabolism
Salt-Tolerance / physiology*
Sodium Chloride / pharmacology
Reg. No./Substance:
0/Antioxidants; 0/Fatty Acids; 50-81-7/Ascorbic Acid; 7647-14-5/Sodium Chloride
Comment In:
New Phytol. 2008;180(4):738-41   [PMID:  19138229 ]

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