In situ distribution and speciation of toxic copper, nickel, and zinc in hydrated roots of cowpea.

@article{Kopittke2011InSD,
  title={In situ distribution and speciation of toxic copper, nickel, and zinc in hydrated roots of cowpea.},
  author={Peter M. Kopittke and Neal W. Menzies and Martin D de Jonge and Brigid A. McKenna and Erica Donner and Richard I. Webb and David J Paterson and Daryl L Howard and C. G. Ryan and Chris J. Glover and Kirk G Scheckel and Enzo Lombi},
  journal={Plant physiology},
  year={2011},
  volume={156 2},
  pages={
          663-73
        }
}
The phytotoxicity of trace metals is of global concern due to contamination of the landscape by human activities. Using synchrotron-based x-ray fluorescence microscopy and x-ray absorption spectroscopy, the distribution and speciation of copper (Cu), nickel (Ni), and zinc (Zn) was examined in situ using hydrated roots of cowpea (Vigna unguiculata) exposed to 1.5 μm Cu, 5 μm Ni, or 40 μm Zn for 1 to 24 h. After 24 h of exposure, most Cu was bound to polygalacturonic acid of the rhizodermis and… CONTINUE READING
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