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Acetylsalicylic acid ameliorates negative effects of NaCl or osmotic stress in Solanum stoloniferum in vitro

Daneshmand, F., Arvin, M. J., Kalantari, K. M.
Biologia plantarum 2010 v.54 no.4 pp. 781-784
electrolytes, ascorbate peroxidase, lipid peroxidation, drought, polyethylene glycol, potatoes, aspirin, hydrogen peroxide, explants, sodium, peroxidase, osmotic stress, linoleate 13S-lipoxygenase, superoxide dismutase, physiological response, potassium, sodium chloride, adverse effects, glutathione-disulfide reductase, catalase, salinity, Solanum stoloniferum
The role of acetylsalicylic acid (0, 1 and 10 μM) pre-treatment in amelioration of salt and osmotic stress in a wild species of potato (Solanum stoloniferum) was investigated. We compared the effects of iso-osmotic concentrations of polyethylene glycol 6000 (15 %) and NaCl (80 mM) on the physiological responses of this species in explants grown in the liquid Murashige and Skoog medium. Both salt and drought reduced shoot growth parameters, photosynthetic pigment contents and increased lipid peroxidation, electrolyte leakage, H₂O₂ content and lipoxygenase activity. The effect of NaCl was more severe than that of polyethylene glycol. Salinity also increased Na⁺ content and decreased K⁺ content and K⁺/Na⁺ ratio. Under both stresses, the activities of superoxide dismutase, guaiacol peroxidase, ascorbate peroxidase, catalase and glutathione reductase enzymes were increased. Acetylsalicylic acid pre-treatment alleviated the adverse effects of both stresses on all parameters measured.