what is role of heavy metal tolerant fungi in improving phytoextraction?
Research has shown that fungal cell wall and their components have major role in sequestering of metals because they contain different functional groups i.e carboxyl, hydroxyl, sulphydryl , amino and phosphate groups which help them in binding of the heavy metals. Fungal biomass can also take up considerable quantities of heavy metals from aqueous solution by adsorption or related process, even in the absence of physiological pH, temperature, and availability of nutrients.. For more details consult https://www.shodhganga.infibnet.ac.in
It is possible for both events to take place post-detoxification. After metal detoxification, the non-toxic form of the metal is retained by the organism if the organism finds it useful otherwise it throws it out. At higher concentrations of the relevant or useful detoxified form of the metal, the cell will be forced to still efflux the excess baggage back to the environment but in a non-toxic form. So depending on physiological relevance and concentration, either of the two events could occur after metal detoxification.
Hi Sobia! we've found that some compounds "vaccinate" fungi against heavy metals making them more resistant by increasing the retention capacity of the extracellular matrix. so in our case, we studied the Langmuir Isotherms that allow you to know wether a compound will be released or not after adsorption.
Check the attached file and don't hesitate to contact me. I find this topic fascinating!
cheers
Francisco
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