Open AccessEFFECT ON 6-BAP CATALASE ACTIVITY IN TOMATO PLANTS UNDER CONDITIONS OF TEMPERATURE STRESS
Author(s) -
Т. С. Колмыкова,
Ekaterina Vladimirovna Klokova,
Elvera Shagidulovna Sharkaeva
Publication year - 2015
Publication title -
samarskij naučnyj vestnik
Language(s) - English
Resource type - Journals
eISSN - 2782-3016
pISSN - 2309-4370
DOI - 10.17816/snv20152129
Subject(s) - catalase , antioxidant , cytokinin , enzyme assay , horticulture , enzyme , biology , botany , chemistry , biochemistry , auxin , gene
Activity of the antioxidant system is one of the mechanisms for the protection of plants against adverse environmental factors. Catalase - a primary antioxidant enzymes. Her change may serve as an indicator of plant resistance to stress. Studied catalase activity in tomato plants of different varieties under the action of low temperatures and cytokinin 6-BAP preparation. The object of investigation used 24- and 27-day-old tomato plant varieties Podarochnyi, Patrice, Volgogradskyi. Found that under the action of low temperatures, the decrease in positive catalase activity: 10-30% at 10 C and 40-60% at a temperature of 3 C as compared with non-refrigerated plants. Less resistant to hyperthermia were plant varieties Patrice. With increasing length of vegetation at a temperature of 25 C in 27-day-old tomato plants resulted in a minor increase in the activity of the enzyme. After the end of the cooling observed recovery of enzyme activity only at grades Podarochnyi and Patrice. This indicates that the indicated tomato varieties possess a high ability to restore metabolic processes. Using 6-regulator cytokinin BAP increased catalase activity in tomato plants as prolonged or momentary cooling. Especially responsive to the drug were plant varieties Patrice and Volgogradskyi. And 6-BAP helped repair catalase activity in 27-day-old plants in the aftereffect of cold stress. Were more sensitive plant varieties Podarochnyi.