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Glutathion Research Paper

994 Words4 Pages

Glutathione induced antioxidant protection against salinity stress in chickpea plant
Mervat Sh Sadak and Ebtihal, M. Abd Elhamid
Botany Department, Agricultural and Biological Division, National Research Centre, Giza, Egypt. P.O. 12622
Corresponding author: Mervat Sh. Sadak
E mail : mervat_sh24@yahoo.com

Abstract: A pot experiment was conducted at the green house of National Research Centre, Dokki, Egypt to evaluate the potential role of foliar application of glutathione with different concentrations 0, 50, 100 or 150 mg/l (namely GHS0, GHS1, GHS2 & GHS3) in enhancing antioxidant defense system of chickpea plant under diluted sea water levels stress conditions 0.23, 3.13 and 6.25 dS/m (namely S0, S1 & S2). Different levels of diluted sea water, 3.13 and 6.25 dS/m (S1 & S2) caused significant increases in some osmoprotectants such as proline, free amino acids and total soluble sugars (TSS). Moreover, glutathione foliar treatment with different …show more content…

These osmolytes or osmoprotectants has an important function in lowering the osmotic potential and maintain cell turgor by increasing absorption of more water molecules into plant cells. Soluble sugars, proline, glycinebeataine and trehalose are among different osmoprotectants compounds in plant cells. These compounds are highly soluble in water, low molecular weight and non toxic compounds even at higher cytosolic concentrations. These compatible solutes increase plant tolerance at salt stress via many ways such as, protecting chloroplast and cytoplasm from sodium injury and as scavengers of reactive oxygen species (Smirnoff & Cumbes, 1989), stabilize proteins and protect structure of proteins (Bohnert & Jensen, 1996), adjust the osmotic balance and general improving stability of different physiological processes of plant under stressed conditions (Dawood and Sadak,

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