Role of salicylic acid pre-treatment on the acclimation of tomato plants to salt- and osmotic stress
The alleviation of oxidative damage and increased resistance to salt stress and to non-ionic osmotic stress induced by 100 mM NaCl or 100 mOsm polyethylene glycol (PEG) treatments, respectively, often correlate with a more efficient antioxidative defence systems and detoxification mechanisms. Pre-tr...
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| Veröffentlicht in: | ACTA BIOLOGICA SZEGEDIENSIS (Print) 2005-01, Vol.49 (1-2), p.123 |
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| container_title | ACTA BIOLOGICA SZEGEDIENSIS (Print) |
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| creator | Szepesi, Ágnes |
| description | The alleviation of oxidative damage and increased resistance to salt stress and to non-ionic osmotic stress induced by 100 mM NaCl or 100 mOsm polyethylene glycol (PEG) treatments, respectively, often correlate with a more efficient antioxidative defence systems and detoxification mechanisms. Pre-treatment of plants with salicylic acid (SA) enhanced antioxidant enzyme activities in concentration dependent manner and increased the stress tolerance of seedlings. Improved acclimation of SA-pre-treated plants to salt stress depended on the previous activation of the antioxidative enzymes and accumulation of ionic and non-ionic osmolytes, but increased resistance to non-ionic osmotic stress could be achieved in those plants which showed reduced antioxidative enzyme activities at the initial stage of the stress. The present work deals with the possible role of the osmotic adaptation and oxidative defence mechanisms during long-term pre-treatment of tomato plants with low concentrations of SA. |
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Pre-treatment of plants with salicylic acid (SA) enhanced antioxidant enzyme activities in concentration dependent manner and increased the stress tolerance of seedlings. Improved acclimation of SA-pre-treated plants to salt stress depended on the previous activation of the antioxidative enzymes and accumulation of ionic and non-ionic osmolytes, but increased resistance to non-ionic osmotic stress could be achieved in those plants which showed reduced antioxidative enzyme activities at the initial stage of the stress. 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| identifier | ISSN: 1588-385X |
| ispartof | ACTA BIOLOGICA SZEGEDIENSIS (Print), 2005-01, Vol.49 (1-2), p.123 |
| issn | 1588-385X 1588-4082 |
| language | eng |
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| source | Alma/SFX Local Collection |
| subjects | Abiotic stress Acclimation Antioxidants Detoxification Enzymatic activity Enzymes Osmosis Osmotic stress Polyethylene glycol Salicylic acid Seedlings Sodium chloride Tomatoes |
| title | Role of salicylic acid pre-treatment on the acclimation of tomato plants to salt- and osmotic stress |
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