Analysis of the low-molecular weight antioxidants of transgenic plants Nicotiana tabacum under abiotic stress conditions
Keywords:
antioxidant system, low-molecular weight antioxidants, acdS-gene, Nicotiana tabacumAbstract
We conducted a comparative analysis of biochemical parameters of non-transgenic and transgenic Nicotiana tabacum, plants cultivated in heavy metal polluted soils. Transgenic plants had in their genome a bacterial acdS-gene encoding the 1-aminocyclopropane-1-carboxylate deaminase (ACC-deaminase) enzyme. The introduction of elevated concentrations of copper, chromium, and lead ions into the soil promotes induction of the acdS-gene expression and an increase in ACC-deaminase activity in transgenic plants. It was shown that the content of phenolic compounds (flavonoids), ascorbic acid, the total antioxidant activity of plants increased under abiotic stress.
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