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Asian Journal of Plant Sciences
  Year: 2011 | Volume: 10 | Issue: 3 | Page No.: 212-219
DOI: 10.3923/ajps.2011.212.219
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Exogenous Abscisic Acid Enhances Sugar Accumulation in Rice (Oryza sativa L.) under Drought Stress

Wattana Pattanagul

The objective of this study was to determine the effects of exogenous ABA on growth and carbohydrate metabolism in rice seedlings cv. Khao Dawk Mali 105 under drought stress. Rice seedlings were grown for 10 days and subjected to water restriction for 7 days. Drought stress caused significant reduction in shoot as well as root growth and biomass. Leaf relative water content and chlorophyll contents were reduced by drought stress. Application of exogenous ABA helps the plants by improving leaf relative water content. Drought stress also caused significant increases in sugar accumulation, accompanied by increases in sucrose phosphate synthase activities. Application of exogenous ABA enhanced sugar accumulation but decreased starch content in the leaf. The results indicated that sugar accumulation is associated with drought stress and exogenous abscisic acid can improve plant water status as well as enhances sugar accumulation under drought stress.
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  •    Effect of Irradiation and Polyethylene Glycol on Drought Tolerance of MR269 Genotype Rice (Oryza sativa L.)
  •    Salicylic Acid Induced Alteration in Dry Matter Partitioning, Antioxidant Defence System and Yield in Chickpea (Cicer arietinum L.) under Drought Stress
  •    Water Stress Induces Cultivar Dependent Changes in Stomatal Complex, Yield and Osmotic Adjustments in Glycine max L.
  •    Effect of Exogenous Glucose and Abscisic Acid on Physiological and Morphological Performances of in vitro Indica Rice (Oryza sativa L. sp. indica)
  •    Biochemical and Physiological Responses in Two Vigna uguiculata (L.) Walp. Cultivars Under Water Stress
  •    The Effect of Water Stress on the Antioxidant Content, Protective Enzyme Activities, Proline Content and Lipid Peroxidation in Wheat Seedling
  •    Evaluation of Drought Stress on Relative Water Content and Chlorophyll Content of Sesame (Sesamum indicum L.) Genotypes at Early Flowering Stage
How to cite this article:

Wattana Pattanagul , 2011. Exogenous Abscisic Acid Enhances Sugar Accumulation in Rice (Oryza sativa L.) under Drought Stress. Asian Journal of Plant Sciences, 10: 212-219.

DOI: 10.3923/ajps.2011.212.219






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