• The activity of antioxidant enzymes (catalase, superoxide dismutase, peroxidase, ascorbate-peroxidase and glucose-6-phosphate dehydrogenase) and the amount of non-enzymatic compounds (malondialdehyde and thiol) significantly decerased in the third and the fourth instar larvae of H. variegata on the micronutrient treatments compared to control. (ac.ir)
  • The increase of superoxide dismutase activity can indicate the occurrence of oxidative stress in the body of the third and the fourth instar larvae of predator H. variegata could be assigned to the accumulation of H2O2 in the body of M. persicae under the influence of the defensive secondary metabolites, which led to increase the activity of catalase and peroxidase. (ac.ir)
  • Exposure to Se or mimosine exhibited a differential response in the mitochondrial catalase and ascorbate peroxidase (Asc-Px) activities. (typeset.io)
  • The ascorbate-glutathione cycle, sometimes Foyer-Halliwell-Asada pathway, is a metabolic pathway that detoxifies hydrogen peroxide (H2O2), a reactive oxygen species that is produced as a waste product in metabolism. (wikipedia.org)
  • Dehydroascorbate is reduced to ascorbate by dehydroascorbate reductase (DHAR) at the expense of GSH, yielding oxidized glutathione (GSSG). (wikipedia.org)
  • In plants, the glutathione-ascorbate cycle operates in the cytosol, mitochondria, plastids and peroxisomes. (wikipedia.org)
  • Since glutathione, ascorbate and NADPH are present in high concentrations in plant cells it is assumed that the glutathione-ascorbate cycle plays a key role for H2O2 detoxification. (wikipedia.org)
  • Peroxidase activity registered a significant increase by threefold in mitochondria and fourfold in soluble fraction in both Se and mimosine groups. (typeset.io)