Effect of Nanoparticles on the Growth of Micromycetes: The Case of Trichoderma Asperellum

Resumo

The effect of concentrations in the media of nanoparticles of silica, magnetite, and carbon nanotubes, as well as magnetic metallopolymer nanocomposites based on unsaturated dicarboxylates of cobalt (II), nickel (II), and iron (iron itaconate and citraconate and maleates of nickel, cobalt, and iron), on the growth of the soil-forming micromycete Trichoderma asperellum is studied in this work. As a result, the toxicity of a nanocomposite prepared by the thermal decomposition of cobalt maleate is revealed at a concentration of 10^–4 parts by weight in the culture media. For the rest of the nanoparticles studied, neither acute toxicity nor the significant inhibition of the micromycete growth are found. For all types of particles studied, it is revealed that the particle concentrations in the media of (1–5) × 10^–6 parts by weight nonspecifically stimulate the regrowth of fungi.