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Indigenous microbial populations of abandoned mining sites and their role in natural attenuation

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Abstract

Environmental contamination by toxic effluents discharged by anthropogenic activities including the mining industries has increased extensively in the recent past. Microbial communities and their biofilms inhabiting these extreme habitats have developed different adaptive strategies in metabolizing and transforming the persistent pollutants. They also play a crucial role in natural attenuation of these abandoned mining sites and act as a major driver of many biogeochemical processes, which helps in ecological rehabilitation and is a viable approach for restoration of wide stretches of land. In this review, the types of mine wastes including the overburden and mine drainage and the types of microbial communities thriving in such environments were probed in detail. The types of biofilms formed along with their possible role in metal bioremediation were also reviewed. This review also provides an overview of the shift in microbial communities in natural reclamation process and also provides an insight into the restoration of the enzyme activities of the soils which may help in further revegetation of abundant mining areas in a sustainable manner. Moreover, the role of indigenous microbiota in bioremediation of heavy metals and their plant growth-promoting activity weres discussed to assess their role in phytoremedial processes.

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The manuscript has been planned and written by Satarupa Dey.

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Correspondence to Satarupa Dey.

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Communicated by Erko Stackebrandt.

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Dey, S. Indigenous microbial populations of abandoned mining sites and their role in natural attenuation. Arch Microbiol 204, 251 (2022). https://doi.org/10.1007/s00203-022-02861-6

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  • DOI: https://doi.org/10.1007/s00203-022-02861-6

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