Other Metal Chelating Agents Thiol Peptides

Another group of agents with metal-chelating properties has been described in some species of ECM fungi, but unlike siderophores and LMW organic acids, they are more related to detoxification mechanisms than to metal ion nutrition or mineral solubilization. This group includes MTs, PCs, and GSH, all the thiol peptides (Gadd 1993 Meharg 2003 Pocsi et al. 2004 Bellion et al. 2006). These peptides act intracellularly once the metal ions have entered the cell, they regulate or prevent the activity...

Mechanisms of Metal Tolerance in ECMF

Metal tolerance may be defined as the genetically conditioned ability to grow and reproduce in environments with high concentrations of potentially toxic metals (Hartley et al. 1997). A metal-tolerant organism must be able to maintain metal homeostasis in the presence of high metal concentrations, controlling the concentrations of free metal ions in the cytosol. A multitude of mechanisms were proposed to contribute to metal tolerance in ECMF (Hartley et al. 1997 Leyval et al. 1997). Avoidance...

References

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