Possible Interaction: Glutathione and Silicon

“RNA-sequencing showed that Si supply alters not only the expression of genes involved in the metabolism of carbon (C), nitrogen (N), and P but also phosphorylation processes and metabolism of glutathione and reactive active oxygen in tomato roots.”

“In comparison with single As/Cd treatment, Si supply reduced H2O2 content, increased total soluble protein content and enhanced glutathione S-transferase activity in shoots.”

“…,Si supplementation also stimulated the … increasing the concentrations of glutathione (GSH) and ascorbate (ASC) as well as the activities of antioxidant enzymes like ascorbate peroxidase (APX), guaiacol peroxidase (POX), catalase (… (GR), dehydro-ascorbate reductase (DHAR) and nitrate reductase (NR) for better protection of cell membranes from reactive oxygen species.”

“However, the fluoride-mediated increase in anthocyanins, flavonoids, xanthophyll, ascorbate and reduced glutathione , and osmolytes like total amino acids, proline and glycine-betaine, were all lowered in presence of silicon , together with reduced PAL and P5CS activity.”

“In addition, Si application normalized the photosynthetic responses, such as transpiration rate (E) and net photosynthesis rate (PN) in salt-treated plants, and reduced the activity of ascorbate peroxidase and glutathione under salt stress.”

“In addition, Si addition increased the activities of superoxide dismutase and catalase and the levels of ascorbic acid and glutathione in the roots under stress.”

“Ascorbic acid, glutathione and non-protein thiols concentrations increased at the higher Cd level, which were further intensified by addition of Si.”

“The concentration of glutathione , an important antioxidant in plants, was increased due to the addition of Si under saline conditions.”