Assessment of the effect of silicon on antioxidant enzymes in cotton plants by multivariate analysis
- Moldes, Carlos Alberto
- Lima Filho, Oscar Fontão de
- Camiña, José Manuel
- Kiriachek, Soraya Gabriela
- Molas, María Lía
- Tsai, Siu Mui
DOIAbstract
Silicon has been extensively researched in relation to the response of plants to biotic and abiotic stress, as an element triggering defense mechanisms which activate the antioxidant system. Furthermore, in some species, adding silicon to unstressed plants modifies the activity of certain antioxidant enzymes participating in detoxifying processes. Thus, in this study, we analyzed the activity of antioxidant enzymes in leaves and roots of unstressed cotton plants fertilized with silicon (Si). Cotton plants were grown in hydroponic culture and added with increasing doses of potassium silicate; then, the enzymatic activity of catalase (CAT), guaiacol peroxidase (GPOX), ascorbate peroxidase (APX), and lipid peroxidation were determined. Using m...