Zinc (Zn) Uptake

  • Gyanendra Nath Mitra


Zinc deficiency is generally observed in lowland soils. In aerobic soils, Zn2+ is readily available to plants. About one third of the world’s population suffers from mild Zn deficiency. Zinc is an essential catalytic component of over 300 enzymes. Zinc is an essential plant nutrient but is toxic beyond a threshold concentration. Several regulatory mechanisms, such as control of Zn uptake, intracellular binding by metal chelators (mugineic acid, phytochelatins, metallothioneins), efflux from the cell and sequestration into vacuoles, are adopted to maintain Zn homeostasis by plants. There is a coordinated expression of Zn2+ transporters, which are involved in Zn2+ uptake from the soil, translocation of Zn2+ to various organs and tissues and in intracellular sequestration and transport to vacuole.


Zinc Deficiency Aerobic Rice Essential Plant Nutrient Mugineic Acid Heavy Metal ATPase 
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Copyright information

© Springer India 2015

Authors and Affiliations

  • Gyanendra Nath Mitra
    • 1
  1. 1.Department of Soil Science and Agricultural ChemistryOrissa University of Agriculture and TechnologyBhubaneswarIndia

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