Charged particle activation analysis at RIKEN: Past,present and future |
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Authors: | T Nozaki |
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Institution: | (1) Graduated School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan |
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Abstract: | 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. |
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