Essential oil of Eucalyptus grandis effect on the growth of ectomycorrhizal isolates in different copper, zinc and nickel concentrations

• Autor(a) principal: Steffen, Ricardo Bemfica
• Data de Publicação: 2011
• Outros Autores: Antoniolli, Zaida Inês, Steffen, Gerusa Pauli Kist, Jacques, Rodrigo Josemar Seminoti, Echkardt, Daniel Pazzini, dos Santos, Marcos Leandro, Santana, Natielo Almeida
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Pesquisa Florestal Brasileira (Online)
• Texto Completo: https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/259
• topic: Heavy metals; Secondary metabolites; Ectomycorrhizae.; Metais pesados; Metabólitos secundários; Ectomicorrizas

The bioactive secondary metabolites of some plants are capable of stimulating the growth of ectomycorrhizal fungi. Combined with plants, these fungi provide the same conditions to grow in environments contaminated by heavy metals. We evaluated the effect of adding essential oil of Eucalyptus grandis in the growth of ectomycorrhizal isolates in the presence of copper, zinc and nickel. The ectomycorrhizal Pisolithus microcarpus (UFSC Pt 116) and Pisolithus sp. (UFSC Pt 24) were incubated in liquid culture medium in the presence of increasing concentrations of copper, zinc and nickel and essential oil of Eucalyptus grandis at a concentration of 20 μL L-1. After an incubation period of 25 days, we estimated the dry mass of mycelium and concentration that inhibited fungal growth by 50%. At concentrations of copper, zinc and nickel above of 3.94, 1.57 and 0.85 mmol L-1 respectively, no increase was observed in the growth of ectomycorrhizal isolates evaluated by the addition of essential oil. The presence of essential oil of E. grandis at a concentration of 20 μL L-1 in liquid culture medium increased the tolerance of ectomycorrhizal isolates UFSC Pt 116 and Pt 24 UFSC to the heavy metals copper, zinc and nickel.doi: 10.4336/2011.pfb.31.67.227