Salicylic acid involvement in salt stress alleviation in wheat (Triticum aestivum cv Crisana) seedlings

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Article Title:	Salicylic acid involvement in salt stress alleviation in wheat (Triticum aestivum cv Crisana) seedlings
Authors:	Cornelia Purcǎrea1*, Dorina Cachiţǎ-Cosma2
Affiliation:	1 University of Oradea – Faculty of Environmental Protection, postdoctoral researcher at Vasile Goldiş Western University Arad 2 Vasile Goldiş Western University Arad – Facultaty of Science
Abstract:	Salt stress affects around 20% of the world’s cultivated areas. Many crops species are sensitive to salinity. Soil salinity causes reduction in crop productivity, because plants may suffer four types of stress: osmotical conductance, specific ion toxicity, ion imbalance and oxidative stress with production of reactive oxygen species. Salicylic acid (SA) plays an important role in plants response to biotic and abiotic stress. Pre-treatment of wheat seeds with SA may cause a low level of oxidative stress, improving the antioxidative capacity of the plants. Salicylic acid can increase the plant tolerance to salt stress induced by NaCl treatments. In our experiment we determined the effect of pre-treatment of wheat seeds with 0.05 mM and 0.1 mM concentration of SA solution on growth, relative water content, on photosynthesys and on assimilatory pigments content of the wheat seedlings in vegetative stage stressed with 0.2M NaCl solution. The results obtained showed that exogenous application of SA induced an increase in growth parameters of wheat seedlings and improved photosynthetic capacity of wheat seedlings against salt induced stress. The SA treatement also ameliorate the total clorophyllian pigment content of wheat seedling leaves under salt stress.
Keywords:	wheat, salt stress, salicylic acid, growth, photosynthesis, assimilatory pigments
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*Correspondence:	Cornelia Purcărea University of Oradea. Faculty of Environmental Protection. No. 26 Gen. Magheru St. 410048. Oradea. Romania. tel +40 –(259) – 212204. email: neli_oradea@yahoo.com