my research show fungi grew in PDA contained high concentration heavy metal but did not grow in low concentraion heavy metal, why this happened? Because in theory, the fungi did not grow in high conc. heavy metal. Heavy metal used is Zinc and Manganese. Anyone know it? Your opinion and suggestion is needed. Thank you.
Well done, although I have not encountered this before but surely you have isolated metal resistant fungus, however Zn and Mn are essential trace metal required for proper functioning of some metabolic processes, your isolate being sensitive at low concentration could be as a result of depletion of the metals by the fungus after which they died off due to nutrient depletion, however at higher concentrations of the metals they developed mechanisms to resist the toxic effect of the metals by various mechanisms thereby becoming resistant
Zn nad Mn are not heavy metals. Anyhow, the isolates are resistant to metals tested
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