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<p>Marine algae contain a vast array of bioactive molecules with diverse uses. One of their interests is to apply seaweed-derived nanoparticles or polysaccharides as bio-stimulants of seed germination for plant growth promotion. Two products derived from the green alga <i>Ulva lactuca</i> were selected as apriming tool for maize seeds. First, the polysaccharide ulvan was characterized using EDX, SEM, XRD, and HPLC. Second, the phycosynthesized selenium nanoparticles (USeNPs) were characterized using SEM and TEM, showing their smooth spherical shape. This study investigates the impact of selenium nanoparticles (USeNPs) with concentrations of 0.5, 2.0, and 5.0 mg L<sup>-1</sup> and ulvan with concentrations of 0.2, 1.0, and 5.0 g L<sup>-1</sup> on the growth and morphological features of maize plants grown for a period of 14 days. Fresh and dry biomasses for shoots and roots, as well as leaf area, shoot height, and protein profile, have been evaluated. Also, the elemental content of both seeds and leaves was estimated. The findings indicated that priming maize seeds with these compounds extracted from <i>U. lactuca</i> significantly enhanced all measured growth attributes of maize plants according to their concentrations. We recommend using green nanoparticles or soluble polysaccharide extracts from seaweeds as bio-stimulants and an eco-friendly method of sustainable agriculture to minimize environmental damage.</p>

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Growth-promoting influence of selenium nanoparticles and ulvan derived from Ulva lactuca on the growth of maize during the seedling stage

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年8月5日

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  • Amany G. Mohamed,
  • Mostafa M. El-Sheekh,
  • Shuhao Huo,
  • Nabil Saber,
  • Xinjuan Hu,
  • Mofida.E.M. Makhlof

摘要

Marine algae contain a vast array of bioactive molecules with diverse uses. One of their interests is to apply seaweed-derived nanoparticles or polysaccharides as bio-stimulants of seed germination for plant growth promotion. Two products derived from the green alga Ulva lactuca were selected as apriming tool for maize seeds. First, the polysaccharide ulvan was characterized using EDX, SEM, XRD, and HPLC. Second, the phycosynthesized selenium nanoparticles (USeNPs) were characterized using SEM and TEM, showing their smooth spherical shape. This study investigates the impact of selenium nanoparticles (USeNPs) with concentrations of 0.5, 2.0, and 5.0 mg L-1 and ulvan with concentrations of 0.2, 1.0, and 5.0 g L-1 on the growth and morphological features of maize plants grown for a period of 14 days. Fresh and dry biomasses for shoots and roots, as well as leaf area, shoot height, and protein profile, have been evaluated. Also, the elemental content of both seeds and leaves was estimated. The findings indicated that priming maize seeds with these compounds extracted from U. lactuca significantly enhanced all measured growth attributes of maize plants according to their concentrations. We recommend using green nanoparticles or soluble polysaccharide extracts from seaweeds as bio-stimulants and an eco-friendly method of sustainable agriculture to minimize environmental damage.