Advances in microbe-assisted reclamation of heavy metal contaminated soils over the last decade: A review

Ashraf, Muhammad Arslan; Hussain, İqbal; Rasheed, Rizwan; Iqbal, Muhammad; Riaz, Muhammad; Arif, Muhammad Saleem

doi:10.1016/j.jenvman.2017.04.060

Cited by 179 publications

(71 citation statements)

References 103 publications

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“…Already, the elevated levels of the heavy metals in the agricultural soils have been a worldwide concern for several decades (Ashraf et al, 2017;Igalavithana et al, 2017;Ippolito, Ducey, & Tarkalson, 2010;Nriagu, 1998). Rice is a staple food in most of the Asian countries with 70% of the total food-derived energy coming from rice (Phuong, Chuong, & áTong Khiem, 1999).…”

Section: Introductionmentioning

confidence: 99%

The bacterial community structure and functional profile in the heavy metal contaminated paddy soils, surrounding a nonferrous smelter in South Korea

Tipayno

Truu

Samaddar

et al. 2018

Ecology and Evolution

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The pollution of agricultural soils by the heavy metals affects the productivity of the land and has an impact on the quality of the surrounding ecosystems. This study investigated the bacterial community structure in the heavy metal contaminated sites along a smelter and a distantly located paddy field to elucidate the factors that are related to the alterations of the bacterial communities under the conditions of heavy metal pollution. Among the study sites, the bacterial communities in the soil did not show any significant differences in their richness and diversity. The soil bacterial communities at the three study sites were distinct from one another at each site, possessing a distinct set of bacterial phylotypes. Among the study sites, significant changes were observed in the abundances of the bacterial phyla and genera. The variations in the bacterial community structure were mostly related to the general soil properties at the phylum level, while at the finer taxonomic levels, the concentrations of arsenic (As) and lead (Pb) were the significant factors, affecting the community structure. The relative abundances of the genera Desulfatibacillum and Desulfovirga were negatively correlated to the concentrations of As, Pb, and cadmium (Cd) in the soil, while the genus Bacillus was positively correlated to the concentrations of As and Cd. According to the results of the prediction of bacterial community functions, the soil bacterial communities of the heavy metal polluted sites were characterized by the more abundant enzymes involved in DNA replication and repair, translation, transcription, and the nucleotide metabolism pathways, while the amino acid and lipid metabolism, as well as the biodegradation potential of xenobiotics, were reduced. Our results showed that the adaptation of the bacterial communities to the heavy metal contamination was predominantly attributed to the replacement process, while the changes in community richness were linked to the variations in the soil pH values.

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Section: Introductionmentioning

confidence: 99%

The bacterial community structure and functional profile in the heavy metal contaminated paddy soils, surrounding a nonferrous smelter in South Korea

Tipayno

Truu

Samaddar

et al. 2018

Ecology and Evolution

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“…Storage of contaminated soil can be performed: a) with preliminary treatment by special reagents that reduce the mobility of pollutants in the soil (lime, phosphogypsum, carbonates), b) without preliminary treatment [6,9,15,19,47].…”

Section: Ex Situ Healthy Of Contaminated Soilmentioning

confidence: 99%

“…Microorganisms are able to extract metals from the soil as a result of reactions: adsorption, precipitation and oxidation; changes in the valence of metals, extracellular chemical deposition, volatilization; oxidation, immobilization and binding; binding, changes in the valence of metals, volatilization, extracellular chemical deposition and symbiosis with plants [6,13,43,47,51].…”

Section: Return Cleared Soil Back To Point Of Originmentioning

confidence: 99%

Modern environmental technologies of healthy soils contaminated by heavy metals and radionuclides

et al. 2020

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Object of research: to systematize (taking into account the possible consequences to biosphere) the known technologies for ecological restoration of soils contaminated by heavy metals and radionuclides. Only a healing technology should be recognized as one possible methodology for solving any soil problems. For soils contaminated by heavy metals and radionuclides healing patterns is conceptually ordered into the following levels: mission, strategy, technology. The mission of healthy soil should be aimed at maintaining the chemical elements content within the optimum interval. The strategy of healthy soil involves the regulation of individual elements content in the soil. Ex-situ a soil healing technology is implemented outside the original pollution site. In-situ, a soil healing technology is carried out directly on the original pollution site. Excavation of the contaminated soil layer is the first stage for ex-situ soil restoration. In the future it will be possible: 1) storage of contaminated soil at special landfills, 2) treatment of contaminated soil at a special reactor. All technologies for in-situ healthy of heavy metals contaminated soils can be ordered as: 1) localization, 2) deconcentration, 3) inactivation, 4) extraction.

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“…Growth-promoting bacteria may alleviate metal stress by restricting the movement of metalloids in roots or the dilution of metal contents within specific tissues of assisted plants [55]. Heavy metals obstruct the uptake and translocation of phosphorus and other nutrients in plants.…”

Section: Effect Of Bacterial Inoculation On Physiological Traits Of Cmentioning

confidence: 99%

Role of Acinetobacter sp. CS9 in Improving Growth and Phytoremediation Potential of Catharanthus longifolius under Cadmium Stress

Yasin

Khan

Ahmad

et al. 2018

Pol. J. Environ. Stud.

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Advances in microbe-assisted reclamation of heavy metal contaminated soils over the last decade: A review

Cited by 179 publications

References 103 publications

The bacterial community structure and functional profile in the heavy metal contaminated paddy soils, surrounding a nonferrous smelter in South Korea

The bacterial community structure and functional profile in the heavy metal contaminated paddy soils, surrounding a nonferrous smelter in South Korea

Modern environmental technologies of healthy soils contaminated by heavy metals and radionuclides

Role of Acinetobacter sp. CS9 in Improving Growth and Phytoremediation Potential of Catharanthus longifolius under Cadmium Stress

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