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American Journal of Plant Physiology
  Year: 2010 | Volume: 5 | Issue: 2 | Page No.: 56-70
DOI: 10.3923/ajpp.2010.56.70
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Evaluation of Heat Shock and Salicylic Acid Treatments as Inducers of Drought Stress Tolerance in Hassawi Wheat

M.M. Azooz and M.M. Youssef

The present study was designed to evaluate the influence of salicylic acid (50 ppm) or/and heat shock on growth, some metabolic activities and protein patterns of Hassawi wheat (Triticum aestivum L. cv. Hassawi) plant. The experimental plant was subjected to three drought stress levels, 100, 60 and 30% field capacity. The results revealed that, there were no significant changes in dry weight and tissue water content in roots and shoots of Hassawi wheat at 60% field capacity, whereas they were significantly reduced at 30% field capacity. However, root/shoot dry weight ratio was increased by increasing of drought level. Drought stress especially at 30% field capacity induced a marked decrease in the content of photosynthetic pigments. The contents of soluble carbohydrate, protein and proline were significantly increased, while an opposite trend was obtained with respect to insoluble carbohydrates and proteins. The content of total free amino acids was significantly increased in roots, while it was decreased in shoots. Salicylic acid or/and heat shock treatments stimulated growth, photosynthetic pigments and accumulation of soluble and insoluble carbohydrates and proteins, but opposite effects were observed on the biosynthesis of free amino acids and proline. In addition to that, drought stress showed different de novo protein bands with different high molecular weights in plants treated or untreated with SA and heat shock either individually or in combination.
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  •    Salicylic Acid Induced Alteration in Dry Matter Partitioning, Antioxidant Defence System and Yield in Chickpea (Cicer arietinum L.) under Drought Stress
  •    Comparative Study on Biochemical Parameters and Antioxidant Enzymes in a Drought Tolerant and a Sensitive Variety of Horsegram (Macrotyloma uniflorum) under Drought Stress
  •    Modification of Photosynthetic Pigments, Osmotic Solutes and Ions Accumulation in Chlorella vulgaris and Wheat Cv. Sds-1 Seedlings under the Influence of NaCl with Salicylic Acids
  •    Screening of Tolerant Spring Barleys for Terminal Heat Stress: Different Importance of Yield Components in Barleys with Different Row Type
  •    The Inductive Role of Vitamin C and its Mode of Application on Growth, Water Status, Antioxidant Enzyme Activities and Protein Patterns of Vicia faba L. cv. Hassawi Grown under Seawater Irrigation
  •    Biochemical and Physiological Responses in Two Vigna uguiculata (L.) Walp. Cultivars Under Water Stress
  •    Effect of Water Deficit on the Physiological and Morphological Characteristics of Mango (Mangifera indica) Rootstock Seedlings
  •    Role of Heat Shock and Salicylic Acid in Antioxidant Homeostasis in Mungbean (Vigna radiata L.) Plant Subjected to Heat Stress
How to cite this article:

M.M. Azooz and M.M. Youssef, 2010. Evaluation of Heat Shock and Salicylic Acid Treatments as Inducers of Drought Stress Tolerance in Hassawi Wheat. American Journal of Plant Physiology, 5: 56-70.

DOI: 10.3923/ajpp.2010.56.70






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