Effect of bacterial exudates on the mobilisation of Zn and Cd from a contaminated soil
Rhizosphere bacteria are considered to play a key role for the plant availability of Zn and Cd in contaminated soils. Bacteria were previously isolated from the rhizosphere and endosphere of field-grown Salix caprea on a contaminated site in South Austria (Amoldstein). Filtrates of bacterial suspensions were used to extract Zn and Cd from a contaminated soil derived from Arnoldstein. Compared to the control (no bacteria), the largest amounts of Zn and Cd could be mobilized by the filtrates of an endophyte from the Microbacteriaceae family and by the rhizosphere bacterium Agromyces sp. Surprisingly, both of them do not produce siderophores or ACC deaminase, In a previous experiment, it was found that inoculation with Agromyces sp. could enhance the leaf biomass production of Salix caprea, but not the foliar concentrations of Zn and Cd.
metal mobilisation rhizosphere bacteria zinc cadmium
M. Puschenreiter A. Sessitsch M. Kuffner G. Wieshammer M. Gorfer Strauss J W. W. Wenzel
Department of Forest and Soil Sciences, University of Natural Resources and Applied Life Sciences, P ARC Seibersdorf Research GmbH, Department of Bioresources, A-2444 Seibersdorf, Austria Department of Plant Sciences and Applied Plant Biotechnology, University of Natural Resources and Ap Department of Plant Sciences and Applied Plant Biotechnology, University of Natural Resources and Ap
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
227-228
2007-07-15（万方平台首次上网日期，不代表论文的发表时间）