Kinetic properties of a micronutrient transporter from Pisum sativum indicate a primary function in Fe uptake from the soil.

Abstract excerpt

Fe uptake in dicotyledonous plants is mediated by a root plasma membrane-bound ferric reductase that reduces extracellular Fe(III)-chelates, releasing Fe(2+) ions, which are then absorbed via a metal ion transporter. We previously showed that Fe deficiency induces an increased capacity to absorb Fe and other micronutrient and heavy metals such as Zn(2+) and Cd(2+) into pea ( Pisum sativum L.) roots [Cohen et al....

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