Journal of Radioanalytical and Nuclear Chemistry

, Volume 275, Issue 2, pp 247–251 | Cite as

Effect of rhizosphere pH condition on cadmium movement in a soybean plant

  • T. Ohya
  • K. Tanoi
  • H. Iikura
  • H. Rai
  • T. M. Nakanishi


To study the effect of rhizosphere pH condition on the cadmium uptake movement, 109Cd, was applied as a radioisotope tracer to a soybean plant grown in a water culture at pH 4.5 or pH 6.5. The distribution of 109Cd in the soybean plant was observed radiographically with an imaging plate (IP). The amount of Cd transported from the root to the upper part of the plant at pH 4.5 was approximately two times higher than that at pH 6.5. However, the movement of Cd in the upper part of the plant was similar under both pH conditions. The distribution of Cd inside the internodes at pH 4.5 also showed similar pattern to that at pH 6.5, suggesting that once Cd reached to the vessel of the root, the movement of Cd was not dependent on rhizosphere pH conditions.


Radiographic Image Soybean Plant Imaging Plate Xylem Vessel Soybean Seedling 
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Copyright information

© Springer Science+Business Media, LLC. 2008

Authors and Affiliations

  • T. Ohya
    • 1
  • K. Tanoi
    • 1
  • H. Iikura
    • 1
  • H. Rai
    • 1
  • T. M. Nakanishi
    • 1
  1. 1.Graduated School of Agricultural and Life SciencesThe University of TokyoTokyoJapan

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