Stable Isotope Analyses Reveal Impact of Fe and Zn on Cd Uptake and Translocation by Theobroma cacao .
| Autor: | Moore RET; Department of Earth Science and Engineering, Imperial College, London SW7 2BP, UK., Ullah I; School of Agriculture, Policy and Development, University of Reading, Reading RG6 6EU, UK., Dunwell JM; School of Agriculture, Policy and Development, University of Reading, Reading RG6 6EU, UK., Rehkämper M; Department of Earth Science and Engineering, Imperial College, London SW7 2BP, UK. |
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| Jazyk: | angličtina |
| Zdroj: | Plants (Basel, Switzerland) [Plants (Basel)] 2024 Feb 17; Vol. 13 (4). Date of Electronic Publication: 2024 Feb 17. |
| DOI: | 10.3390/plants13040551 |
| Abstrakt: | High concentrations of toxic cadmium (Cd) in soils are problematic as the element accumulates in food crops such as rice and cacao. A mitigation strategy to minimise Cd accumulation is to enhance the competitive uptake of plant-essential metals. Theobroma cacao seedlings were grown hydroponically with added Cd. Eight different treatments were used, which included/excluded hydroponic or foliar zinc (Zn) and/or iron (Fe) for the final growth period. Analyses of Cd concentrations and natural stable isotope compositions by multiple collector ICP-MS were conducted. Cadmium uptake and translocation decreased when Fe was removed from the hydroponic solutions, while the application of foliar Zn-EDTA may enhance Cd translocation. No significant differences in isotope fractionation during uptake were found between treatments. Data from all treatments fit a single Cd isotope fractionation model associated with sequestration (seq) of isotopically light Cd in roots and unidirectional mobilisation (mob) of isotopically heavier Cd to the leaves (ε 114 Cd |
| Databáze: | MEDLINE |
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