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Zinc can be present in six different forms in soil namely; water soluble zinc, exchangeable zinc, organically bound zinc, carbonate bound zinc, aluminium and manganese oxide bound zinc and residual fractions of zinc.
1 paź 2023 · Deficiencies of micronutrients like iron (Fe), zinc (Zn), calcium (Ca) and other minerals can cause life threatening conditions while Fe deficiency and anemia has been the biggest issue. Through the proper selection of food these micronutrients deficiencies can be prevented to a reasonable extent.
Here, we review the current understanding of zinc homeostasis in plants from the molecular and physiological perspectives. We provide an overview of approaches pursued so far in Zn biofortification of crops. Finally, we outline a “push-pull” model of zinc nutrition in plants as a simplifying concept.
Zinc is an essential mineral that is present naturally in some foods, added to others, and is also available as a dietary supplement. Zinc is also found in many cold lozenges and some over-the-counter drugs sold as cold remedies.
1 wrz 2018 · Biofortification of food crops may be an effective method for improving Zn intake in susceptible human populations. A basic knowledge of the dynamics of zinc (Zn) in soils, water and plants are important steps in achieving sustainable solutions to the problem of Zn deficiency in crops and humans.
Zn is ubiquitous and is the second most abundant element after iron (Fe) (Hambidge & Krebs, 2007 ). The familiar sources of Zn include animal sources (beef, poultry, and seafood), dairy (cheese), and few vegetables (legumes and grains) (Gibson & Anderson, 2009; NIH, 2021) (Figure 1 ).
ZIP4 and/or ZnT5B transport dietary zinc ions from the duodenum into the enterocyte, ZnT1 transports zinc ions from the enterocyte into the circulation, and ZnT5B (bidirectional zinc transporter) facilitates endogenous zinc secretion into the intestinal lumen.
