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Nanoparticles

Nanoparticles Show Promise in Insect Pest Management, with Caveats

Strategic Insights

— 2 min read

Research published in the journal Plant Nano Biology has investigated the effects of silica, titania, and silver nanoparticles on the American serpentine leafminer, a devastating pest of various crops. The study, conducted by scientists at Kafrelsheikh University in Egypt, found that while nanoparticles may not affect larval feeding rates, they can have significant impacts on the survival, development, and body size of the leafminer. However, the results also suggest that plant-mediated exposure to certain nanoparticles may actually increase the performance of phytophagous insects, potentially undermining their use in pest management.

Key Takeaways:

  • The study investigated the effects of silica, titania, and silver nanoparticles on the American serpentine leafminer, a major pest of various crops.
  • The research found that while nanoparticles may not affect larval feeding rates, they can impact the survival, development, and body size of the leafminer.
  • Silica nanoparticles were found to decrease puparia weight, while titania and silver nanoparticles increased both weight and length of puparium as well as wing length in adults.
  • The lowest concentration of titania nanoparticles and the highest concentration of silver nanoparticles led to upregulation of the antioxidant enzyme superoxide dismutase 2.
  • The study also found that the LC50 of silica nanoparticles was estimated to be 550 mg/L, indicating a significant impact on the leafminer at this concentration.
  • The research has important implications for the use of nanoparticles in the management of internal feeders and other insect pests.
  • The study was conducted by scientists at Kafrelsheikh University in Egypt, with additional authors from Kyushu University and other institutions.

Statistics:

  • 50, 100, 200, and 400 mg/L: the concentrations of nanoparticles tested in the study.
  • 550 mg/L: the estimated LC50 (lethal concentration for 50% of the leafminers) of silica nanoparticles.
  • 50 mg/L: the lowest concentration of titania nanoparticles that led to upregulation of superoxide dismutase 2.
  • 400 mg/L: the highest concentration of silver nanoparticles that led to upregulation of superoxide dismutase 2.
  • 13():100164: the journal issue and article number for the study in Plant Nano Biology.
  • 2025: the year the study was conducted.

Sources:

  • VerticalNews. "Fresh data on nanoparticles are presented in a new report." October 20, 2025.
  • Oxidative effects of foliar-applied silica, titania, and silver nanoparticles on the leafminer, with additional studies of silica nanoparticle impacts on survival and development time. Plant Nano Biology, 2025,13():100164.
  • NewsRx LLC. "Research on Nanoparticles Reported by Researchers at Kafrelsheikh University (Oxidative effects of foliar-applied silica, titania, and silver nanoparticles on the leafminer, with additional studies of silica nanoparticle impacts on survival and ...)." Nanotechnology Weekly. October 20, 2025; p 1616.

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