CIMO/School of Agriculture, Polytechnic Institute of Bragança, Campus de Santa Apolónia, Apartado 1172, 5301-854, Bragança, Portugal.
Bull Environ Contam Toxicol. 2012 Jul;89(1):53-60. doi: 10.1007/s00128-012-0628-5. Epub 2012 Apr 8.
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 2×RD. 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.
本研究首次评估了在波尔多混合物、氧氯化铜或氢氧化铜暴露下，昆虫病原体球孢白僵菌的铜耐受性、铜增溶和铜积累之间的关系。波尔多混合物对真菌有高度危害性，在推荐剂量 (RD) 和 2×RD 时完全抑制了真菌的生长。发现氢氧化铜和氧氯化铜的毒性较低，分别平均减少了 29%、30%和 58%的真菌生长、孢子形成和分生孢子萌发。这两种铜形式最容易增溶、沉淀和被球孢白僵菌积累，这表明所有这些过程都参与了真菌的铜耐受性。
