Mycosynthesis of chitosan-selenium nanocomposite and its activity as an insecticide against the cotton leafworm Spodoptera littoralis DOI Creative Commons

Sohila Ahmed Ibrahiem,

Fifi M. Reda,

Eman Abd-ElAzeem

и другие.

Scientific Reports, Год журнала: 2025, Номер 15(1)

Опубликована: Янв. 6, 2025

Abstract The cotton leafworm, Spodoptra littoralis, causes great damage to crops. A new, safer method than insecticide is necessary for its control. Selenium nanoparticles (SeNPs) are metalloid nanomaterial, with extensive biological activities. They have low toxicity and can be used safely in plant disease management. In this study, we successfully bio-fabricated selenium chitosan-selenium nanocomposite (Ch-SeNPs) using a fungal cell-free filtrate of Penicillium griseofulvum . biosynthesized nanomaterials were initially detected optically by the formation red color solution mixture appearance strong plasmon resonance peak at 240–300 nm. fully characterized UV–visible spectroscopy, transmission electron microscopy, dynamic light scattering, energy dispersive X-ray, inductively coupled plasma Fourier transform infrared. We tested anti-insect activities SeNPs, Ch-SeNPs against larvae S. littoralis compared spore suspensions P. results indicated that followed SeNPs gave significantly higher mortality percentage suspension fungus. highest production all was after 7 days 40 °C under alkaline conditions (pH 9). average size diameter 91.25 67.41 nm zeta potential − 8.05 + 41 mV, respectively. Both high rates values LC 50 90 both pupae. showed stronger activity experimental conditions. Cytotoxicity experiments their safety honeybee populations. current study reveals significant ultrastructure impact on larvae. These findings suggest fabricated costless easy route filtrate, they pest control systems safe It first report about application as an agent.

Язык: Английский

Mycosynthesis of chitosan-selenium nanocomposite and its activity as an insecticide against the cotton leafworm Spodoptera littoralis DOI Creative Commons

Sohila Ahmed Ibrahiem,

Fifi M. Reda,

Eman Abd-ElAzeem

и другие.

Scientific Reports, Год журнала: 2025, Номер 15(1)

Опубликована: Янв. 6, 2025

Abstract The cotton leafworm, Spodoptra littoralis, causes great damage to crops. A new, safer method than insecticide is necessary for its control. Selenium nanoparticles (SeNPs) are metalloid nanomaterial, with extensive biological activities. They have low toxicity and can be used safely in plant disease management. In this study, we successfully bio-fabricated selenium chitosan-selenium nanocomposite (Ch-SeNPs) using a fungal cell-free filtrate of Penicillium griseofulvum . biosynthesized nanomaterials were initially detected optically by the formation red color solution mixture appearance strong plasmon resonance peak at 240–300 nm. fully characterized UV–visible spectroscopy, transmission electron microscopy, dynamic light scattering, energy dispersive X-ray, inductively coupled plasma Fourier transform infrared. We tested anti-insect activities SeNPs, Ch-SeNPs against larvae S. littoralis compared spore suspensions P. results indicated that followed SeNPs gave significantly higher mortality percentage suspension fungus. highest production all was after 7 days 40 °C under alkaline conditions (pH 9). average size diameter 91.25 67.41 nm zeta potential − 8.05 + 41 mV, respectively. Both high rates values LC 50 90 both pupae. showed stronger activity experimental conditions. Cytotoxicity experiments their safety honeybee populations. current study reveals significant ultrastructure impact on larvae. These findings suggest fabricated costless easy route filtrate, they pest control systems safe It first report about application as an agent.

Язык: Английский

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