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The influence of treatment with some purinic derivates on enzyme activity at Nicotiana tabacum L. plantlets

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Author(s): Elena Crsitina Stoica | Vlad Artenie

Journal: Analele Ştiinţifice Ale Universităţii Alexandru Ioan Cuza din Iași,Sectiunea II A : Genetica si Biologie Moleculara
ISSN 1582-3571

Volume: 9;
Issue: 2;
Date: 2008;
Original page

ABSTRACT
This paper present the influence of length treatment with two purinic derivates, on the three antioxidant enzyme activity: catalase(EC 1.11.1.6), peroxidase(EC 1.11.1.7) and superoxide dismutase(EC 1.15.1.1) in Nicotiana tabacum L plantlets. The substances using for this treatment was 1,3,7 – trimetilxanthine (teine, caffeine) and 1,3 – dimetilxanthine (theophylline), both with purinic nucleus in their structure. The treatment was applied twenty one days. In this period the plantlets was treated with these substances in following concentrations: 0.025%, 0.05%, 0.1% and 0.25%. In the same time was constituted and a control probe with plantlets treated only with distilled water. The treatment have determined the intensification of peroxidase and catalase activity and decrease of superoxide dismutase activity.

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