Rhizosphere bacterial community, Heavy metals, Zea mays L, Chelants, Phytoremediation, Biodegradation, Environmental, Metals, Heavy - pharmacokinetics, Copper - pharmacokinetics, Soil Microbiology, Zea mays - drug effects, Bacteria - drug effects, Ethylenediamines - pharmacology, Soil Pollutants - toxicity, Tissue Distribution, Rhizosphere, Soil Pollutants -...