title: Influence of copper, manganese and pH on the growth and several enzyme activities in mycorrhizal fungus Amanita muscaria.
abstract: The effects of various concentrations of copper, manganese and pH on the growth and several enzyme activities of mycorrhizal fungus Amanita muscaria were investigated. Cu (5-25 mg l-1) and lower pH (3.0-4.0) strongly inhibited the mycelial growth (dry weight), however, the protein content was not affected evidently. Some enzyme activities were lower as the Cu and Mn concentrations were higher and other enzymes had the maximum values at the specified concentration. The activities of the following enzymes were significantly correlated with the fungal growth after the treatment with Cu: G6PDH, MTLDH and trehalase, and with Mn: G6PDH, MTLDH and alpha-mannosidase respectively. Measurement of these enzyme activities might provide a useful biochemical criterion for the evaluation of the fungitoxicity of soil contaminated by copper or manganese.
authors.affiliation: Department of Environmental Science and Engineering, Nanjing University, P. R. China.
authors.forename: E X
authors.initials: EX
authors.lastname: Kong
mesh_terms: D000135:Acid Phosphatase / Q000187:drug effects / Q000378:metabolism; D000545:Amanita / Q000187:drug effects / Q000201:enzymology* / Q000254:growth & development*; D003300:Copper / Q000494:pharmacology*; D006863:Hydrogen-Ion Concentration; D008345:Manganese / Q000494:pharmacology*; D008361:Mannosidases / Q000187:drug effects / Q000378:metabolism; D010088:Oxidoreductases / Q000187:drug effects / Q000378:metabolism; D011506:Proteins / Q000187:drug effects / Q000378:metabolism; D014198:Trehalase / Q000187:drug effects / Q000378:metabolism; D043323:alpha-Mannosidase
chemical_list: D011506:Proteins; D008345:Manganese; D003300:Copper; D010088:Oxidoreductases; D000135:Acid Phosphatase; D008361:Mannosidases; D043323:alpha-Mannosidase; D014198:Trehalase