Influence of lanthanum on the uptake of trace elements in cucumber plant |
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Authors: | Zhiwei Huang Guichen Chen Jiawei Du |
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Institution: | (1) Institute of Physiology and Ecology of Plant, Chinese Academy of Sciences, 200032 Shanghai, People’s Republic of China;(2) Northwest Plateau Institute of Biology, Chinese Academy of Sciences, 810001 Xining, People’s Republic of China |
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Abstract: | The effects of La3+ on the uptake of trace elements (Se, Co, V, and Tc) in cucumber plants were studied by a radioactive multitracer technique.
It was observed that the uptake and distribution of these trace elements in roots, stems, and leaves are different under different
La3+ treatments. Furthermore, in the control, the plant accumulates 75Se, 56Co, and 48V all in the order roots>leaves>stems, whereas 95mTc was in the order leaves>stems>roots. The accumulations of 75Se and 95mTc in plants treated with different La3+ concentration were in the same order as those in the control, but the uptakes percentages of other kinds of element changed
differently. The results indicate that lanthanum treatments to a growing cucumber lead to the change of uptake of trace elements,
which suggest that a rare earth element is directly or indirectly involved in the ion transport of the plant and affects plant
growth by regulating the uptake and distribution of elements that influence the plant cell physiology and biochemistry. |
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Keywords: | Lanthanum cucumber seedlings radionuclide root stem leaf |
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