Abstract
A simulated warming manipulation was conducted to evaluate the effects of temperature increase on cadmium (Cd), lead (Pb), copper (Cu), iron (Fe) and zinc (Zn) accumulation in Solanum tuberosum L. at Dingxi, Gansu, in the semiarid northwest of China. The objective of this study was to determine if temperature increases significantly changed trace element concentrations and contents in the different ecosystem compartments by affecting soil content, soil solubility and plant capture. The results reveal that an increase in temperature will lead to a significant change in trace element concentrations and contents in Solanum tuberosum L. The strongest effects of a 3°C temperature increase are increased Cu, Zn and Fe leaf concentrations of 25, 27 and 24%, respectively; but decreases in Cd, Pb, Fe, Zn and Cu tuber concentrations of 27, 55, 41, 29 and 23%, respectively. The increasing concentrations of some trace elements in Solanum tuberosum L. leaves are related to greater retranslocation, photosynthetic capacity and growth. Warming decreases the concentrations of some trace elements in tubers, implying that tuber growth rate exceeds its metal uptake rate at higher temperatures. Indeed, it is expected that by the year 2050 the increased temperature will have induced a decrease of concentrations of Cd, Pb, Cu, Fe and Zn of 9.1, 11.5, 18.5, 16.8 and 15.8%, respectively, in tubers in the study area. In addition, the results indicate that a 1–3°C increase in temperature will improve the availability of selected trace elements and transfer potential of these elements from soil to Solanum tuberosum L.





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Acknowledgements
This research was supported by National Key Natural Science Fund (Project No. 40830957), Science Fund of Public Welfare Meteorological Organization (Project No. GYHY201106029), the China Postdoctoral Science Foundation (Project No. 20100470891), and the Arid Meteorological Science Foundation (Project No. IAM201017). We are very grateful to David Cushley for English improve.
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Li, Y., Zhang, Q., Wang, R. et al. Temperature changes the dynamics of trace element accumulation in Solanum tuberosum L.. Climatic Change 112, 655–672 (2012). https://doi.org/10.1007/s10584-011-0251-1
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DOI: https://doi.org/10.1007/s10584-011-0251-1