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- W3136308388 abstract "Food crops often accumulate heavy metals above the recommended limits. Cadmium (Cd) is particularly harmful in terms of its potential dangers to human health. The effects of nutrient status and cation competition on Cd uptake and distribution in barley were investigated to analyse the main route for Cd entry into the plants. Cd uptake into whole plants was measured by radiotracer studies and elemental analysis using environmentally relevant concentrations. The nutrient status of the plants was altered by growing them hydroponically in micronutrient-deficient conditions (-Fe, -Mn, or -Zn). Fe and Zn were found to have a large effect on the uptake of Cd both via deficiencies and by the competition for uptake. However, Mn was found to have no effect on the uptake of Cd either via deficiency or by the competition for uptake. This strongly suggests that the main route for Cd uptake into the roots is via Fe and Zn transporters. The inhibition of Cd influx only by FeII (but not by FeIII) suggests that Cd uptake into the root occurs through divalent cation transporters. Since Cd is a non-essential metal in plants, the transport characteristics were compared with those of an essential micronutrient, Ni. At the same external concentration, more than twice as much Cd was absorbed as Ni in all of the different nutrient conditions. Ni translocation to the shoot was much lower than for Cd. The comparison of two metals showed some similarities in the root uptake processes but not in the shoot translocation." @default.
- W3136308388 created "2021-03-29" @default.
- W3136308388 creator A5000002044 @default.
- W3136308388 date "2021-05-01" @default.
- W3136308388 modified "2023-10-17" @default.
- W3136308388 title "A comparative study of the factors affecting uptake and distribution of Cd with Ni in barley" @default.
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- W3136308388 doi "https://doi.org/10.1016/j.plaphy.2021.03.043" @default.
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