Plant-Assisted Bioremediation: An Ecological Approach for Recovering Multi-contaminated Areas

Ancona, Valeria; Grenni, Paola; Caracciolo, Anna Barra; Campanale, Claudia; Lenola, Martina Di; Rascio, Ida; Uricchio, Vito Felice; Massacci, Angelo

doi:10.1007/978-3-319-63336-7_18

Cited by 9 publications

(6 citation statements)

References 45 publications

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“…The complex interactions occurring between the root system of a selected plant species and the soil autochthonous bacterial communities in the rhizosphere can significantly increase the biodegradation of recalcitrant organic pollutants [8].…”

Section: Introductionmentioning

confidence: 99%

Poplar-Assisted Bioremediation for Recovering a PCB and Heavy-Metal-Contaminated Area

et al. 2021

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A Monviso clone has been applied to promote PCB degradation in a soil historically contaminated by polychlorinated biphenyls (PCBs) and heavy metals (HMs). The multi-contaminated area is located in Southern Italy. PCBs, HMs, and the soil microbial community (abundance, viability, and structure) were analysed in selected plots of the poplar-treated area. At 900 days after poplar planting, chemical analyses showed that PCBs and most of HMs diminished under the Italian legal limits. The overall results suggest that the poplar clone was effective in promoting PCB rhizodegradation and HM phytostabilization. Organic carbon content increased strongly in the rhizosphere of the planted plots. Microbiological results highlighted an overall increase in microbial abundance, cell viability, and the presence of bacterial groups involved in PCB degradation. The poplar-based bioremediation technology is a nature-based solution able to promote the recovery of soil quality in terms of contaminant removal, increase in organic carbon, and stimulation of autochthonous bacterial groups able to transform PCBs.

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Section: Introductionmentioning

confidence: 99%

Poplar-Assisted Bioremediation for Recovering a PCB and Heavy-Metal-Contaminated Area

et al. 2021

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“…For the last few years, plant‐based clean up technologies have been gaining popularity as cost‐effective solutions and rehabilitation strategies based on natural processes. In this context, phytoremediation of HMs relies on the capability of plants to intercept, take up, accumulate, sequestrate, stabilize or translocate contaminants . In this regard, Chandrasekhar and Ray affirm that the effectiveness of phytoremediation depends on the identification of biomass yielding, metal tolerant plants and the capacity and mechanism of plant tissues for accumulating, detaining or degrading pollutants.…”

Section: Introductionmentioning

confidence: 99%

“…In this context, phytoremediation of HMs relies on the capability of plants to intercept, take up, accumulate, sequestrate, stabilize or translocate contaminants. 14,15 In this regard, Chandrasekhar and Ray 16 affirm that the effectiveness of phytoremediation depends on the identification of biomass yielding, metal tolerant plants and the capacity and mechanism of plant tissues for accumulating, detaining or degrading pollutants. In 2019, the same authors 17 asserted that understanding plant capability for accumulating metal in the roots or shoots is a crucial step for identifying a metal hyperaccumulator species to be applied in phytoextraction and phytostabilization.…”

Section: Introductionmentioning

confidence: 99%

Heavy metal phytoremediation of a poplar clone in a contaminated soil in southern Italy

Ancona

Caracciolo

Campanale

et al. 2019

J of Chemical Tech & Biotech

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BACKGROUND The Monviso clone previously tested successfully to remediate a lindane‐contaminated soil in central Italy was then applied in a historically heavy metal contaminated area in southern Italy. RESULTS The results obtained at 900 days from the poplar planting showed a strong decrease below Italian national legal limits (D.Lgs 152/06) for most heavy metals (HMs). The highest reduction of HM concentrations was observed in soil samples collected near the trunk (25 cm distant from poplar) and in the rhizosphere. The values of the HM bioaccumulation factor (BAF, considering roots and leaves) and of the translocation factor (TF) suggest that poplar trees were able to phytostabilize HMs. The soil organic carbon content increased compared to the previous sampling in all plots planted. The highest values were observed for the rhizosphere soils of each target tree, while the phosphorous available strongly decreased. Microbial results showed an overall increase in cell viability, dehydrogenase activity and microbial abundance of some bacterial groups. CONCLUSION Overall results showed that the poplar‐based phytoremediation strategy was able to promote the phytostabilization of the HMs and to improve the soil quality in terms of both organic carbon content and microbial community structure and activity. © 2019 Society of Chemical Industry

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“…The expansion of organic matter after revegetation in the saline soil has been reported [7, 41, 49]. During bioremediation, the increased available resources would provide better nourishment for soil microorganisms that had survived the unfavorable conditions [50]. This might be one of the reasons that existing microbes were more likely to become persistent upon the introduction of salt-tolerant plants.…”

Section: Discussionmentioning

confidence: 99%

Revegetation on abandoned salt ponds relieves the seasonal fluctuation of soil microbiomes

et al. 2019

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Background Salt pond restoration aims to recover the environmental damages that accumulated over the long history of salt production. Of the restoration strategies, phytoremediation that utilizes salt-tolerant plants and soil microorganisms to reduce the salt concentrations is believed to be environmentally-friendly. However, little is known about the change of bacterial community during salt pond restoration in the context of phytoremediation. In the present study, we used 16S metagenomics to compare seasonal changes of bacterial communities between the revegetated and barren salterns at Sicao, Taiwan. Results In both saltern types, Proteobacteria, Planctomycetes, Chloroflexi, and Bacteroidetes were predominant at the phylum level. In the revegetated salterns, the soil microbiomes displayed high species diversities and underwent a stepwise transition across seasons. In the barren salterns, the soil microbiomes fluctuated greatly, indicating that mangroves tended to stabilize the soil microorganism communities over the succession. Bacteria in the order Halanaerobiaceae and archaea in the family Halobacteriaceae that were adapted to high salinity exclusively occurred in the barren salterns. Among the 441 persistent operational taxonomic units detected in the revegetated salterns, 387 (87.5%) were present as transient species in the barren salterns. Only 32 persistent bacteria were exclusively detected in the revegetated salterns. Possibly, salt-tolerant plants provided shelters for those new colonizers. Conclusions The collective data indicate that revegetation tended to stabilize the microbiome across seasons and enriched the microbial diversity in the salterns, especially species of Planctomycetes and Acidobacteria. Electronic supplementary material The online version of this article (10.1186/s12864-019-5875-y) contains supplementary material, which is available to authorized users.

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Plant-Assisted Bioremediation: An Ecological Approach for Recovering Multi-contaminated Areas

Cited by 9 publications

References 45 publications

Poplar-Assisted Bioremediation for Recovering a PCB and Heavy-Metal-Contaminated Area

Poplar-Assisted Bioremediation for Recovering a PCB and Heavy-Metal-Contaminated Area

Heavy metal phytoremediation of a poplar clone in a contaminated soil in southern Italy

Revegetation on abandoned salt ponds relieves the seasonal fluctuation of soil microbiomes

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