TY - JOUR AB - The ameliorative effect of salicylic acid (SA) on cadmium (Cd) toxicity in sunflower plants was studied by investigating plant growth and fatty acid composition. Sunflower plants in two leaves stage were exposed to CdCl2 treatment (0, 50, 100, 150 and 200 µM) and then were treated with salicylic acid (0, 250 and 500 µM) as foliage spraying. One week after the last salicylic acid treatment,plants were harvested and growth parameters were measured . Oil of leaf was extracted in a Soxhlet system and fatty acid composition were measured by gas chromatography (GC). Statistical analyses showed excess Cd reduced growth parameters (fresh weight and length of stems and roots, fresh weight and number of leaves)and SA increased them compared with the control. Maximum reduction in these parameters was at 200 µmol Cd and 0µmol of SA. Cd caused a shift in fatty acids composition, resulting in a lower degree of their unsaturation and an increase in saturated fatty acids in sunflower leaves,whereas SA improved them. SA, particularly increased the percentage of linolenic acid and lowered that of palmitic acid by the same proportion. These results sugg membrane integrity due to lipids est that SA could be used as a potential growth regulator and a stabilizer ofprotection of cadmium-induced oxidative stress to improve plant resistance to Cd stress AU - Moradkhani, S. AU - Khavari Nejad, R. A. AU - Dilmaghani, K AU - Chaparzadeh, N. DA - 2012 KW - Cadmium toxicity; Fatty acid; Growth parameters; Helianthus annuus L.; Salicylic acid M1 - 4 M3 - ORIGINAL ARTICLE PY - 2012 SE - 78 SN - 1997-0838 SP - 78-89 ST - Effect of salicylic acid treatment on cadmium toxicity and leaf lipid composition in sunflower T2 - Journal of Stress Physiology & Biochemistry TI - Effect of salicylic acid treatment on cadmium toxicity and leaf lipid composition in sunflower UR - http://www.jspb.ru/issues/2012/N4/JSPB_2012_4_78-89.pdf VL - 8 ID - 11 ER -