[Effect of growth regulators on peroxidation processes in corn seedlings under salt stress].
The intensification of lipid free radical oxidation processes and active oxygen spicies accumulation in roots and leaves of corn seedlings has been studied by chemiluminescence method. 10-days exposition on 0.1 M NaCl decreased their growth and influenced on peroxidation intensivity. The maximum of H2O2-initiated chemiluminescence in roots was noted at 9th hour whereas in leaves it was demonstrated at 48th hour of salt exposition. The effect of seeds treatment by synthetic growth regulators methiur and ivin on seedlings growth and peroxidation processes in seedlings has been studied. Under salt stress condition both substances intensified seedling growth and decreased initiated chemiluminescence level. Antioxidative effect of methiur has been more pronounced in roots whereas ivin one in leaves. Practical using of these growth regulators for salt-tolerance increasing of plants has been suggested.
Kholodny Institute of Botany, National Academy of Science of Ukraine, Kyiv. ikurilenko@yahoo.com
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Kurylenko
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Palladina
D015227:Lipid Peroxidation / Q000187:drug effects*; D010937:Plant Growth Regulators / Q000494:pharmacology*; D012965:Sodium Chloride; D003313:Zea mays / Q000254:growth & development / Q000378:metabolism*
D010937:Plant Growth Regulators; D012965:Sodium Chloride