Trehalose Expression in Hexaploid Wheat (Triticum aestivum L.) Germplasm under Drought Stress

Plant productivity is greatly influenced by environmental stresses. under stressful condition,plants develop a plethora of biochemical and molecular mechanisms to cope with new situations that causes expression of several genes by signal transduction,associated with stress tolerance. plant osmotic stress responses are associated with changes in gene expression due to environmental stresses like drought,salinity and low temperature. trehalose is a non-reducing disaccharide that occurs in a large range of organisms,such as bacteria,fungi,nematodes and crustaceans. plants that produce trehalose are highly tolerant to desiccation stress. present study was focused on biochemical estimation of trehalose levels in different wheat genotypes viz local genotype,mapping population,synthetic and nibge varieties,by hplc method. drought was induced by the application of polyethylene glycol (peg 8000). root/shoot ratio was enhanced in the drought affected genotypes. trehalose promoted a positive effect in wheat germplasm under the drought stress that has lead to the conclusion that it might be utilized to enhance the growth of wheat under the stress situation.