Heat shock tolerance and antioxidant activity in moth bean seedlings treated with tetcyclacis
| Autor: | Narendra Sankhla, Tim D. Davis, Abha Upadhyaya |
|---|---|
| Rok vydání: | 1991 |
| Předmět: |
Antioxidant
biology Physiology medicine.medical_treatment food and beverages Plant Science Malondialdehyde food.food Lipid peroxidation chemistry.chemical_compound Horticulture food chemistry Catalase Germination Botany biology.protein medicine Gibberellin Sugar Agronomy and Crop Science Vigna aconitifolia |
| Zdroj: | Plant Growth Regulation. 10:215-222 |
| ISSN: | 1573-5087 0167-6903 |
| DOI: | 10.1007/bf00024412 |
| Popis: | Moth bean (Vigna aconitifolia (Jacq.) Marechal cv. Jaadia) seeds were germinated in the presence of 0, 18, or 36 μM solutions of the gibberellin biosynthesis inhibitor, tetcyclacis. After 72 h, seedlings were exposed to 22 or 48°C for 90 min. The 48°C temperature dramatically increased total electrolyte and sugar leakage from the seedlings, particularly in the controls. Tetcyclacis reduced electrolyte and sugar leakage at 48°C by 15–35% compared to the 48°C controls. High temperature increased malondialdehyde concentration in control seedlings but not in treated seedlings indicating that tetcyclacis inhibited high temperature-induced lipid peroxidation. Relative to the control, tetcyclacis tended to increase the total activities of catalase and peroxidase in the seedlings. In contrast, tetcyclacis tended to decrease ascorbic acid oxidase activity, particularly at 48°C. These results suggest that tetcyclacis conferred at least some heat shock tolerance to moth bean seedlings. This increased tolerance was correlated with increased activities of some antioxidant systems. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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