ISHS Acta Horticulturae 516: XXV International Horticultural Congress, Part 6: Culture Techniques with Special Emphasis on Environmental Implications Physiological Processes in Plants
EFFECT OF METHYL JASMONATE ON WATER STRESS IN STRAWBERRY |
| Author: | S.Y. Wang |
| Keywords: | Fragaria vesca, membrane lipids, methyl jasmonate, oxygen scavenging enzymes, water stress |
| Abstract:
The effect of methyl jasmonate (MJ) on changes in membrane lipid composition and activities of oxygen scavenging enzymes under water stress was studied in strawberry (Fragaria vesca cv 'MMb') leaves. Under water stress, MJ treatment reduced transpiration, water loss, malondialdehyde (MDA) content and also lessened the reduction of membrane lipids, glycolipids and phospholipids, degree of fatty acid unsaturation and ratio of linolenic (18:3) to linoleic acid (18:2). MJ also reduced the rate of increase of peroxidase (EC 1.11.1.7; POD) activity under water stress. Higher activities of catalase (EC 1.11.1.6; CAT) and superoxide dismutase (EC 1.15.1.1; SOD) as well as ascorbic acid content were detected in the MJ treated leaves compared to control leaves under water deficit conditions. These results indicate that MJ treated plants are more resistant to water stress. | |
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