Selenium Transport in Root Systems of Tomato

  title={Selenium Transport in Root Systems of Tomato},
  author={Colin J. Asher and G. W. Butler and Peter John Peterson},
  journal={Journal of Experimental Botany},
Selenate and selenite transport through tomato root systems were followed for periods up to 4 h after removal of the plant tops, using Se as a tracer.With selenate, Se concentrations in the xylem exudate were 6 to 13 times higher than in the external solution, and chromatographic analysis showed that the selenium was transported as inorganic selenate (SeO42-).With selenite, Se concentrations in the exudate were always lower than in the external solution. Analyses of exudate samples showed that… 

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