Cadmium uptake by the roots and translocation to
shoots has been characterised in a number of plant species, including
wheat (Triticum turgidum) [8] and maize (Zea mays) [9]. After
root absorption, Cd is translocated to the shoots mainly in an ionic
form in xylem and phloem [10], either passively by transpiration
rate [11] or actively through Fe transporters [12].