Biologia Plantarum · 2011 · 67 citations · 29 references
Life SciencesPlant BiologyPlant SciencesPlant BiochemistryPlant PhysiologyRedox BiochemistryAntioxidant DefensePlant EnzymesReactive Oxygen SpeciesSalinity PhysiologySalinity Stress PhysiologySalt Stress PhysiologyAntioxidant Defense Under SalinityCatalase FunctionEnzymesOxidative Stress In Aquatic OrganismsPlant Antioxidant DefenseSalt Tolerance MechanismsSodium Toxicity In PlantsSodium Toxicity Tolerance
The effects of NaCl on the H2O2 content and the activities of catalase (CAT) and superoxide dismutase (SOD) were studied in diverse group of plants, such as a unicellular alga, Chlorella sp., an aquatic macrophyte, Najas graminea, and a mangrove plant, Suaeda maritima, all showing high tolerance to NaCl. Significant accumulation of H2O2 was observed in all the tested plants upon their exposure to 255 mM NaCl. The activity of both CAT and SOD increased significantly in response to the NaCl treatment. Growing the plants in presence of 255 mM NaCl also resulted in the synthesis of new isoforms of both CAT and SOD.
29