Scholarlink

<p>Considering the devastating effect of salt stress on crops the present study investigates the regulatory role of exogenous silymarin in enhancing antioxidant defense system and morpho-physiology of <i>Brassica napus</i> under salt stress. Twenty-three-day-old rapeseed (<i>Brassica napus</i> cv. BARI Sarisha-18) plants were supplemented with a foliar spray of 250&#xa0;ppm silymarin followed by two doses of NaCl, viz. 75 and 150&#xa0;mM. This growing condition was maintained for the following 30&#xa0;days. Salinity resulted in reduced biomass production, growth attributes, and relative water content of rapeseed plants with increased levels of Na<sup>+</sup> ions, hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>), lipid peroxidation, electrolyte leakage (EL), and proline (Pro) content. This led to oxidative damage by suppressing the activities of antioxidant enzymes. Silymarin reduced lipid peroxidation, H<sub>2</sub>O<sub>2</sub>, EL, and Pro content by 23, 15, 9, and 17%, respectively in 150&#xa0;mM NaCl-stressed plants compared to their corresponding controls. The activities of glyoxalase, as well as antioxidant enzymes such as ascorbate peroxidase, monodehydroascorbate reductase, dehydroascorbate reductase, glutathione reductase, catalase, glutathione peroxidase, glutathione<i> S</i>-transferase, peroxidase, lipoxygenase, and superoxide dismutase were also upregulated due to silymarin application. Findings from the current study suggest that salt-induced rapeseed plants exhibited reduced growth attributes alongside elevated oxidative stress markers, including both enzymatic and non-enzymatic antioxidants. Furthermore, it highlights the potential of silymarin as a potential growth regulator and antioxidant that can enhance salt tolerance in rapeseed plants by reducing the harmful effects of reactive oxygen species.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Silymarin orchestrates reactive oxygen species metabolism, ion homeostasis and morpho-physiological traits to confer salt tolerance in Brassica napus

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年5月2日

查看全文
  • Mirza Hasanuzzaman,
  • Samiul Alam,
  • Md. Sarwar Hosen,
  • Samiha Rummana,
  • Md. Mahabub Alam

摘要

Considering the devastating effect of salt stress on crops the present study investigates the regulatory role of exogenous silymarin in enhancing antioxidant defense system and morpho-physiology of Brassica napus under salt stress. Twenty-three-day-old rapeseed (Brassica napus cv. BARI Sarisha-18) plants were supplemented with a foliar spray of 250 ppm silymarin followed by two doses of NaCl, viz. 75 and 150 mM. This growing condition was maintained for the following 30 days. Salinity resulted in reduced biomass production, growth attributes, and relative water content of rapeseed plants with increased levels of Na+ ions, hydrogen peroxide (H2O2), lipid peroxidation, electrolyte leakage (EL), and proline (Pro) content. This led to oxidative damage by suppressing the activities of antioxidant enzymes. Silymarin reduced lipid peroxidation, H2O2, EL, and Pro content by 23, 15, 9, and 17%, respectively in 150 mM NaCl-stressed plants compared to their corresponding controls. The activities of glyoxalase, as well as antioxidant enzymes such as ascorbate peroxidase, monodehydroascorbate reductase, dehydroascorbate reductase, glutathione reductase, catalase, glutathione peroxidase, glutathione S-transferase, peroxidase, lipoxygenase, and superoxide dismutase were also upregulated due to silymarin application. Findings from the current study suggest that salt-induced rapeseed plants exhibited reduced growth attributes alongside elevated oxidative stress markers, including both enzymatic and non-enzymatic antioxidants. Furthermore, it highlights the potential of silymarin as a potential growth regulator and antioxidant that can enhance salt tolerance in rapeseed plants by reducing the harmful effects of reactive oxygen species.