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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/120521
Zinc Homeostasis and isotopic fractionation in plants: a review
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Aims Recent advances in mass spectrometry have dem- onstrated that higher plants discriminate stable Zn iso- topes during uptake and translocation depending on environmental conditions and physiological status of the plant. Stable Zn isotopes have emerged as a prom- ising tool to characterize the plants response to inade- quate Zn supply. The aim of this review is to build a comprehensive model linking Zn homeostasis and Zn isotopic fractionation in plants and advance our current view of Zn homeostasis and interaction with other micronutrients. Methods The distribution of stable Zn isotopes in plants and the most likely causes of fractionation are reviewed, and the interactions with micronutrients Fe, Cu, and Ni are discussed. Results The main sources of Zn fractionation in plants are i) adsorption, ii) low- and high-affinity transport phenomena, iii) speciation, iv) compartmentalization, and v) diffusion. We propose a model for Zn fraction- ation during uptake and radial transport in the roots, root-to-shoot transport, and remobilization. Conclusions Future work should concentrate on better understanding the molecular mechanisms underlying the fractionations as this will be the key to future devel- opment of this novel isotope system. A combination of stable isotopes and speciation analyses might prove a powerful tool for plant nutrition and homeostasis studies.
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CALDELAS, Cristina and WEISS, Dominik Jakob. Zinc Homeostasis and isotopic fractionation in plants: a review. Plant and Soil. 2016. Vol. 411, num. 1-2, pags. 17-46. ISSN 0032-079X. [consulted: 13 of June of 2026]. Available at: https://hdl.handle.net/2445/120521