Diffusion limitations in root uptake of cadmium and zinc, but not nickel, and resulting bias in the Michaelis constant.

  title={Diffusion limitations in root uptake of cadmium and zinc, but not nickel, and resulting bias in the Michaelis constant.},
  author={Fien Degryse and Afsaneh Shahbazi and Liesbeth Verheyen and Erik Smolders},
  journal={Plant physiology},
  volume={160 2},
It has long been recognized that diffusive boundary layers affect the determination of active transport parameters, but this has been largely overlooked in plant physiological research. We studied the short-term uptake of cadmium (Cd), zinc (Zn), and nickel (Ni) by spinach (Spinacia oleracea) and tomato (Lycopersicon esculentum) in solutions with or without metal complexes. At same free ion concentration, the presence of complexes, which enhance the diffusion flux, increased the uptake of Cd… CONTINUE READING
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