Open AccessActivities of Antioxidant Enzymes in Mesophyll and Bundle Sheath Cell Chloroplasts of Maize Plants (Zea mays L.) Exposed to Salt Stress
Author(s) -
N. M. Aliyeva
Publication year - 2020
Publication title -
bûlletenʹ nauki i praktiki
Language(s) - English
Resource type - Journals
ISSN - 2414-2948
DOI - 10.33619/2414-2948/60/05
Subject(s) - chloroplast , superoxide dismutase , vascular bundle , antioxidant , malondialdehyde , hydrogen peroxide , lipid peroxidation , chemistry , reactive oxygen species , peroxidase , biochemistry , botany , biology , enzyme , gene
Antioxidant defense systems have been studied in the mesophyll (MC) and bundle sheath cell (BSC) chloroplasts of maize (Zea mays L.) leaves cultivated in an artificial climate chamber under various concentrations (0%, 1%, 2%, 3%) of NaCl. The amounts of some of the main products of lipid peroxidation malondialdehyde (MDA) and reactive oxygen species hydrogen peroxide (H2O2) as well as activities of superoxide dismutase (SOD) and ascorbate peroxidase (APO) were determined in MC and BSC chloroplasts. BSC chloroplasts were found to be more tolerant to salt stress compared with MC chloroplasts. The MDA amount increased in both chloroplasts. H2O2 was found to be localized mainly in MC chloroplasts at various NaCl concentrations. The SOD and APO activities increased in both chloroplasts of the plants exposed to salt stress.