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Background: Iron long distance transport in plants is underdocumented. Results: Iron is delivered to embryos as ferric complexes with citrate/malate. An ascorbate-mediated reduction step is further required to acquire iron. Conclusion: Ascorbate plays a key role for the chemical reduction and transport of Fe 2ϩ . Significance: The identification of iron ligands and the transport process is crucial to further understand how iron is distributed within the plant.

Localization and chemical forms of cadmium in plant samples by combining analytical electron microscopy and X-ray spectromicroscopy. Spectrochimica Acta B, 2006, 61 (12)