Does secondary chemistry enable lichens to grow on iron-rich substrates?
Lichen substances are shown to increase or to inhibit the adsorption of Fe at cation exchange sites. The influence on the adsorption strongly differs between individual lichen substances and is different for Fe2+ and Fe3+. These results add a new biological role to the known functions of lichen secondary metabolites. In an experiment with cellulose filters, which were soaked with acetone solutions of lichen substances and were then incubated with micromolar solutions of FeCl2 or FeCl3, many...[Show more]
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|Source:||Oryx: Journal of Fauna and Flora International|
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