Abstract
Biological and environmental effects of lanthanide series of elements have received much attention recently due to their wide applications. In this study, effects of La3+ treatments on calcium and magnesium concentrations as well as cytoplasmic streaming of internodal cells of Chara corallina were investigated. At all treatment concentrations (10, 100, and 1,000 μM), La3+ significantly decreased calcium concentrations in the cell-wall fractions after 5-h treatments. Calcium concentrations in the cell contents and magnesium concentrations in the cell-wall fractions were reduced by 100 and 1,000 μM La3+ treatments. However, cytoplasmic streaming as an indicator of [Ca2+]cyt was only inhibited at the highest La3+ concentration (1,000 μM). The results suggest that La3+ may affect cellular calcium homeostasis by actions other than as a simple Ca2+ antagonist. La3+ could partially compensate for calcium deficiency at certain concentrations.
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Acknowledgements
This work was supported by National Natural Science Foundation of China (grant No. 10875136, 10905062, 11005118), the Knowledge Innovation Program of the Chinese Academy of Sciences (grant No. KJCX3.SYW.N3), and the Ministry of Science and Technology of China (grant No. 2011CB933404).
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Li, Z., Zhang, Z., Yu, M. et al. Effects of Lanthanum on Calcium and Magnesium Contents and Cytoplasmic Streaming of Internodal Cells of Chara corallina . Biol Trace Elem Res 143, 555–561 (2011). https://doi.org/10.1007/s12011-010-8854-3
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DOI: https://doi.org/10.1007/s12011-010-8854-3