Microbial Tolerance Strategies Against Lead Toxicity

Lead (Pb)Lead (Pb) is a toxic element that is not required for any known function in living organisms; hence, it is not considered essential. It does not break down and will persist in the environment for an undetermined amount of time, including in the soil, waterWater, and air. Because PB is the cause of serious health and environmental problems, we need to develop remediation solutions that are both effective and efficient. Microorganisms that are native to Pb-affected places have developed processes that are unique to them to live and even thrive in an environmentEnvironment that is contaminated with lead. Bacteria protect themselves from lead in many different ways, including biosorptionBiosorption, efflux, and the synthesis of metal chelators like siderophores and metallothioneins, the production of exopolysaccharidesExopolysaccharides, extracellular sequestration, and intracellular bioaccumulationBioaccumulation. Bacteria also produce metalMetal chelators like siderophores and metallothioneins. One interesting potential alternativeLead contamination for lead contaminationContamination removal is the use of microbes. The employment of transgenic bacterial strains that possess metal-binding properties, metalMetal chelating proteins, or higher metal adsorption ability, along with the utilisation of bacterial activity, such as the integration of plant growth-promoting rhizobacteria to enhance Pb resistance, exopolysaccharide and siderophores, and metallothioneinMetallothionein-mediated immobilisation, has the potential to effectively accomplish bioremediation andExopolysaccharides phytoremediation objectives.