Possible Interaction: Antioxidants and Nitrogen

“Tobacco consumption exposes the oral epithelium to toxic oxygen and nitrogen free radicals that can affect host antioxidant defence mechanisms.”

“PP have been shown to scavenge oxygen and nitrogen derived free radicals, modulating antioxidant enzymes and cellular redox transcription factors.”

“Second, LN pretreatment enhanced the transcript levels of stress signaling components and phytohormones pathway as well as antioxidant enzyme activities.”

“However, a sharp increase of HCN contents and a decrease of antioxidant enzymes activities were observed when nitrogen rates increased from 90 kg N ha-1 to 120 kg N ha-1 , suggesting that 90 kg N ha-1 might be better for sorghums under drought conditions.”

“Plant growth, concentration of photosynthetic pigments, total nitrogen , and carbohydrates reduced, whereas enzymatic [catalase (CAT), superoxide dismutase (SOD), and ascorbate peroxidase (APX)] and non-enzymatic (proline and total phenolics) antioxidants increased upon HM stress.”

“These results suggested that nitrogen supply could alleviate the adverse effects of drought stress on plants by enhancing antioxidant defense and improving nitrogen assimilation, while the effects on plant tolerance to drought stress varied with nitrogen ionic forms.”

“ Nitrogen application also promoted antioxidant defense in roots via increased production of phytohormones and the level of enzymatic and non-enzymatic antioxidants.”

“Intramolecular hydrogen bonding of intermediate nitrogen radicals has a major influence on the antioxidant activities of all compounds studied.”