Effects of silver bioaccumulation on uptake of nutrients and trace metals and total amounts of the rhizosphere proteins
The effects of increased soil Ag concentration, resulting from addition to soil of Ag sulfate and nitrate, on uptake of 13 nutrient and trace elements by wheat seedlings and on soil proteins were studied in a greenhouse experiment. Plant roots were able to take up large amounts of Ag, though concentrations of Ag in leaves remained the same as in the control plants. In both cases (treatments with Ag<,2> SO<,4> and with AgNO<,3>, Ag affected biomass of the seedlings. More significant decreases in plant biomass were observed after treatment with AgNO<,3>. Ag inhibited uptake of different nutrients and trace elements. The effect increased with time and was evident for both roots and leaves. The relative sensitivity of roots and leaves to different Ag compounds was different. Total amount of proteins in the rhizosphere soil of the plants varied significantly. Over time, concentrations of soil proteins in the control soil and in the soil treated with AgNO<,3> increased and decreased in the soil treated with Ag<,2>SO<,4>.
Silver wheat Triticum aestivum variations in nutrient and trace element uptake soil proteins
I. Shtangeeva S. Hartikainen H. Hartikainen M. Surgik S. Timofeev
St. Petersburg University, Universitetskaya nab., 7/9, St. Petersburg 199034 Russia Department of Applied Chemistry and Microbiology, University of Helsinki Box 27 00014 Finland
国际会议
第九届痕量元素生物地球化学国际会议(9th International Conference on the Biogeochemistry of Trace Elements)
北京
英文
716-717
2007-07-15（万方平台首次上网日期，不代表论文的发表时间）