List of yeast (Saccharomyces cerevisiae) strains used in this study.

I: BAPTA (1,2-bis(o-aminophenoxy)ethane-N,N,N',N'-tetra acetic acid)II: EGTA (ethylene glycol-bis-β-aminoethylenether-N,N,N′,N′-tetraacetic acid)III: The YCp-vector His 3 marker (Stratagene PRS-413) were transformed into the ccc1 yeast strain achieving a yeast strain sensitive on high Fe2+/Fe3+ levels [25].Barley MTP8 proteins were tested for their metal ion selectivity in different yeast mutants at different metal ion concentrations as given below. The accessions numbers for each strain obtained from Euroscarf are given (www.euroscarf.de) [60].List of yeast (Saccharomyces cerevisiae) strains used in this study.