Scholarlink

<p>This study aimed to investigate the potential of Silicon (SiO<sub>2</sub>NPs and Na<sub>2</sub>SiO<sub>3</sub>) to mitigate Hg absorption, accumulation, and toxicity in transgenic soybean plants. By analyzing Hg speciation, total Hg content, physiological characteristics, anatomical structures, and the homeostasis of macro (P, S, Ca, K, and Mg) and micro (Cu, Fe, Mn, Zn) nutrients, the impact of Si against Hg-induced stress was assessed. Plants were cultivated under six treatments: water, SiO<sub>2</sub>NPs, Na<sub>2</sub>SiO<sub>3</sub>, Na<sub>2</sub>SiO<sub>3</sub> + HgCl<sub>2</sub>, SiO<sub>2</sub>NPs + HgCl<sub>2</sub>, and HgCl<sub>2</sub>. The addition of silicon to the soil, both in the form of nanoparticles and in its soluble form, did not negatively impact plant development. SiO<sub>2</sub> NPs reduced Hg concentration in roots by 17% (RR) and 29% (INTACTA) and Na<sub>2</sub>SiO<sub>3</sub> by 15% and 37%. In leaves, Hg reductions were 25% with SiO<sub>2</sub>NPs and 22% with Na<sub>2</sub>SiO<sub>3</sub> for RR variety, while INTACTA showed decreases of 14% and 34%. Only Hg(II) species were found, indicating no Hg methylation in soil or plants. PCA revealed that Hg, alone or with Si, altered nutrient absorption. Morphological analyses showed that SiO<sub>2</sub>NPs and Na<sub>2</sub>SiO<sub>3</sub> reduced Hg toxicity at the cellular level, highlighting their potential to mitigate heavy metal contamination in crops.</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

Feasibility of using silica (Na2SiO3 and SiO2NPs) to mitigate mercury in transgenic soybeans grown in contaminated soils and respective effects on nutrient homeostasis

  • 期刊论文

  • 发表日期：

    2025年3月5日

查看全文
  • Vinnícius H. C. da Silva,
  • Rodrigo F. de Lima,
  • Juliana L. S. Mayer,
  • Marco Aurélio Zezzi Arruda

摘要

This study aimed to investigate the potential of Silicon (SiO2NPs and Na2SiO3) to mitigate Hg absorption, accumulation, and toxicity in transgenic soybean plants. By analyzing Hg speciation, total Hg content, physiological characteristics, anatomical structures, and the homeostasis of macro (P, S, Ca, K, and Mg) and micro (Cu, Fe, Mn, Zn) nutrients, the impact of Si against Hg-induced stress was assessed. Plants were cultivated under six treatments: water, SiO2NPs, Na2SiO3, Na2SiO3 + HgCl2, SiO2NPs + HgCl2, and HgCl2. The addition of silicon to the soil, both in the form of nanoparticles and in its soluble form, did not negatively impact plant development. SiO2 NPs reduced Hg concentration in roots by 17% (RR) and 29% (INTACTA) and Na2SiO3 by 15% and 37%. In leaves, Hg reductions were 25% with SiO2NPs and 22% with Na2SiO3 for RR variety, while INTACTA showed decreases of 14% and 34%. Only Hg(II) species were found, indicating no Hg methylation in soil or plants. PCA revealed that Hg, alone or with Si, altered nutrient absorption. Morphological analyses showed that SiO2NPs and Na2SiO3 reduced Hg toxicity at the cellular level, highlighting their potential to mitigate heavy metal contamination in crops.