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<p>Nickel is a hormetic micronutrient for plants. This study investigates the comparative impact of seed priming with nickel in the form of bulk particles, and green-synthesized nanoparticles fabricated using leaf extract of <i>Berberis baluchistanica</i>, as reducing and capping agent, on germination, phenotypic characteristics, antioxidants, stomata, and photosynthetic activity of two wheat cultivars in a laboratory pot experiment. The synthesis of NiO-NPs was confirmed by using UV-spectrophotometer (peak at 203&#xa0;nm) and their size observed was 22&#xa0;nm. Furthermore, SEM, XRD, EDX, FTIR and evaluation of zeta potential were performed to study the physiochemical characteristics of NiO-NPs. Maximum root-to-shoot Ni translocation was observed under NiO-NPs, while bulk NiNO<sub>3</sub> accumulated maximum Ni in root. Both nano and bulk form of Ni had stimulatory effects on urease activity, ammonia, and nitrate content. NiO-NPs increased the root length, shoot length and biomass, which were downregulated under bulk NiNO<sub>3</sub> treatment. Bulk NiNO<sub>3</sub> exacerbated oxidative stress in the form of MDA, H<sub>2</sub>O<sub>2</sub> and membrane damage, which in turn elicited enzymatic and non-enzymatic antioxidants. This study suggests that green-synthesized NiO-NPs at low concentration are non-toxic and effective in improvement of plant growth and photosynthetic activity.</p>

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Investigating the role of bulk and nano nickel in amelioration of morphophysiology and photosynthetic activity of Triticum aestivum L.

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年7月1日

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  • Samina Bibi,
  • Siraj Uddin,
  • Muhammad Anas,
  • Minhas Elahi,
  • Javed Iqbal,
  • Shoaib Khan,
  • Mahboobeh Mahmoodi,
  • Mohsin Kazi,
  • Fars K. Alanazi,
  • Umar Masood Quraishi

摘要

Nickel is a hormetic micronutrient for plants. This study investigates the comparative impact of seed priming with nickel in the form of bulk particles, and green-synthesized nanoparticles fabricated using leaf extract of Berberis baluchistanica, as reducing and capping agent, on germination, phenotypic characteristics, antioxidants, stomata, and photosynthetic activity of two wheat cultivars in a laboratory pot experiment. The synthesis of NiO-NPs was confirmed by using UV-spectrophotometer (peak at 203 nm) and their size observed was 22 nm. Furthermore, SEM, XRD, EDX, FTIR and evaluation of zeta potential were performed to study the physiochemical characteristics of NiO-NPs. Maximum root-to-shoot Ni translocation was observed under NiO-NPs, while bulk NiNO3 accumulated maximum Ni in root. Both nano and bulk form of Ni had stimulatory effects on urease activity, ammonia, and nitrate content. NiO-NPs increased the root length, shoot length and biomass, which were downregulated under bulk NiNO3 treatment. Bulk NiNO3 exacerbated oxidative stress in the form of MDA, H2O2 and membrane damage, which in turn elicited enzymatic and non-enzymatic antioxidants. This study suggests that green-synthesized NiO-NPs at low concentration are non-toxic and effective in improvement of plant growth and photosynthetic activity.