Bioremediation. Chapter 8. What is bioremediation?. The use of bacteria and fungi and plants to break down or degrade toxic chemical compounds that have accumulated in the environment. Pollutants
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The use of bacteria and fungi and plants to break down or degrade toxic chemical compounds that have accumulated in the environment
naturally-occurring compounds in the environment that are present in unnaturally high concentrations.
chemically synthesized compounds that have never occurred in nature.
plasticsWhat are environmental contaminants?
may exist at high, toxic concentrations
degradation may depend on another nutrient that is in limiting supply
microbes may not yet have evolved biochemical pathways to degrade compounds
may require a consortium of microbial populationsWhat challenges exist for bioremediation of pollutants and xenobiotics?
U4+insolUranium reduction leads to uranium precipitation and immobilization
CO2 + H2O
The layout of the genes involved in chlorocatechol-degradation on the plasmid is similar to the layout of the catechol-degrading genes on the chromosome
E. coli bacterium
New gene/transport proteins
Hgo (less toxic form of metal)
Stimulates plant growth!