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Accumulation and Localization of Cadmium in Potato (Solanum tuberosum) Under Different Soil Cd Levels

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Abstract

Phytoavailability and uptake mechanism of Cd in edible plant tissues grown on metal polluted agricultural soils has become a growing concern worldwide. Uptake, transport, accumulation and localization of cadmium in potato organs under different soil Cd levels were investigated using inductively-coupled plasma mass spectrometry and energy dispersive X-ray microanalysis. Results indicated that Cd contents in potato organs increased with increasing soil Cd concentrations, and the order of Cd contents in different organs was leaves > stems/roots > tubers. Root-to-stem Cd translocation coefficients ranged from 0.89 to 1.81. Cd localization in potato tissues suggested that leaves and stems should be the main compartment of Cd storage and uptake. Although low concentrations of Cd migrated from the root to tuber, Cd accumulation in the tuber exceeded the standard for food security. Therefore, the planting of potato plants in farmland containing Cd should be closely evaluated due to its potential to present health risks.

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Acknowledgments

This research was supported by the National Natural Science Foundation of China (No. 41301336) and the key science and technology research projects of the Education Department of Henan province, China (Grant No. 13A610064).

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Correspondence to Zhifan Chen.

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Chen, Z., Zhao, Y., Gu, L. et al. Accumulation and Localization of Cadmium in Potato (Solanum tuberosum) Under Different Soil Cd Levels. Bull Environ Contam Toxicol 92, 745–751 (2014). https://doi.org/10.1007/s00128-014-1252-3

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  • DOI: https://doi.org/10.1007/s00128-014-1252-3

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