Tolerance and Bioaccumulation of Copper by the Entomopathogen Beauveria bassiana (Bals.-Criv.) Vuill. Exposed to Various Copper-Based Fungicides

作者：Martins Fatima; Soares Maria Elisa; Oliveira Ivo; Pereira Jose Alberto; Bastos Maria de Lourdes; Baptista Paula^*

来源：Bulletin of Environmental Contamination and Toxicology, 2012, 89(1): 53-60.

DOI：10.1007/s00128-012-0628-5

• Beauveria bassiana
• Copper-based fungicides
• Tolerance

This work evaluates for the first time the relationships between copper-tolerance, -solubilization and -bioaccumulation in the entomopathogen Beauveria bassiana exposed to Bordeaux mixture, copper oxychloride or copper hydroxide. Bordeaux mixture was highly detrimental to fungus, by inhibiting the growth totally at the recommended dose (RD) and 2xRD. Copper hydroxide and copper oxychloride were found to be less toxic, reducing fungus growth, sporulation and conidial germination in an average of 29 %, 30 % and 58 %, respectively. These two copper forms were the easiest to solubilize, to precipitate and the most accumulated by B. bassiana, suggesting the involvement of all these processes on fungus copper-tolerance.

• 出版日期2012-7