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Lead pollution and bacterial bioremediation: a review

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Abstract

Environmental pollution by lead is an old, still unsolved health issue, calling for advanced remediation strategies. Here, we review lead toxicity, lead bioremediation with bacteria, and topics such as efflux, biosorption, exopolysaccharide, bioprecipitation, biomineralization, bioaccumulation and sequestration. Bacteria tune their response at the molecular level by expressing specific genes and proteins to combat lead toxicity. Biosorption and bioprecipitation can be used successfully to clean polluted environments. Bacterial bioremediation can be combined with phytoremediation for more effective bioremediation. Bacterial lead bioremediation is limited by environmental conditions, nutrients availability and the presence of other pollutants bacterial growth.

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Abbreviations

µg/m3 :

Micrograms per cubic meter air

ACC:

Aminocyclopropane-1-carboxylate

APX:

Ascorbate peroxidase

CAT:

Catalase

CBA:

Capsule biogenesis assembly

CDF:

Cation diffusion facilitator

EPA:

Environmental Protection Agency

EPS:

Exopolysaccharide

IAA:

Indole-3-acetic acid

MDA:

Malonylaldehyde

mg/kg:

Milligrams per kilogram

mg/l:

Milligrams per liter

MT:

Metallothioneins

NLPPW:

National Lead Poisoning Prevention Week

Pb:

Lead

PGPM:

Plant growth-promoting microbes

POX:

Peroxidase

PSB:

Phosphate-solubilizing bacteria

ROS:

Reactive oxygen species

SOD:

Superoxide dismutase

SRB:

Sulfate-reducing bacteria

WHO:

World Health Organization

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Correspondence to Bhupendra Kishanprasad Pushkar.

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Sevak, P.I., Pushkar, B.K. & Kapadne, P.N. Lead pollution and bacterial bioremediation: a review. Environ Chem Lett 19, 4463–4488 (2021). https://doi.org/10.1007/s10311-021-01296-7

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  • DOI: https://doi.org/10.1007/s10311-021-01296-7

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