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Abstract <p>This study examined the effects of indole-3-acetic acid (IAA) and sodium nitroprusside (SNP), two exogenous nitric oxide donors, on the growth of pea seedlings under cinnamic acid stress. <i>Pisum sativum</i> L. ‘Dingwan 8’ was used as the test material in a hydroponic experiment with treatments of various SNP (50–400 μmol/L) and IAA (5–40 μmol/L) concentrations. The findings demonstrated that cinnamic acid stress considerably reduced seedling growth and raised the amount of malondialdehyde. By increasing the levels of osmotic adjustment chemicals and antioxidant enzymes like superoxide dismutase and peroxidase, exogenous SNP and IAA reduced the stress. I5 (5 μmol/L IAA) and S50 (50 μmol/L SNP) treatments produced the most alleviative effects, according to the membership function analysis. These results provide a theoretical foundation for overcoming ongoing cropping challenges by indicating that suitable quantities of SNP and IAA can reduce oxidative damage by bolstering the antioxidant defense mechanism.</p>

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Mitigating Effects of Nitroprusside and Auxin on Pea Seedling Growth under Cinnamic Acid Stress

  • 期刊论文

  • 发表日期：

    2026年6月29日

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  • Z. Cheng,
  • L. Ma,
  • S. Ma,
  • S. Li

摘要

Abstract

This study examined the effects of indole-3-acetic acid (IAA) and sodium nitroprusside (SNP), two exogenous nitric oxide donors, on the growth of pea seedlings under cinnamic acid stress. Pisum sativum L. ‘Dingwan 8’ was used as the test material in a hydroponic experiment with treatments of various SNP (50–400 μmol/L) and IAA (5–40 μmol/L) concentrations. The findings demonstrated that cinnamic acid stress considerably reduced seedling growth and raised the amount of malondialdehyde. By increasing the levels of osmotic adjustment chemicals and antioxidant enzymes like superoxide dismutase and peroxidase, exogenous SNP and IAA reduced the stress. I5 (5 μmol/L IAA) and S50 (50 μmol/L SNP) treatments produced the most alleviative effects, according to the membership function analysis. These results provide a theoretical foundation for overcoming ongoing cropping challenges by indicating that suitable quantities of SNP and IAA can reduce oxidative damage by bolstering the antioxidant defense mechanism.