Bacterial succession in oil-contaminated soil under phytoremediation with poplars

Lopez-Echartea, Eglantina; Strejcek, Michal; Mukherjee, Shinjini; Uhlík, Ondřej; Yrjälä, Kim

doi:10.1016/j.chemosphere.2019.125242

Cited by 42 publications

(28 citation statements)

References 103 publications

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“…Previous studies on RR of polluted soils showed a positive effect of the plant on the soil bacteria diversity, which increased with the depletion of the contaminants. 46−48 However, these studies were performed using the soil recently affected by contamination events 46,48 or sterilized soil, 47 while we considered a historically polluted site where the autochthonous microbiota is well adapted and selected by the high levels of multiple, persistent contaminants. 22,49 Possibly, the relatively short duration of our experiment may have not been enough to show a significant detoxification effect and a subsequent increase of the bacterial diversity.…”

Section: Resultsmentioning

confidence: 99%

New Data Set of Polychlorinated Dibenzo-p-dioxin and Dibenzofuran Half-Lives: Natural Attenuation and Rhizoremediation Using Several Common Plant Species in a Weathered Contaminated Soil

Terzaghi

Vergani

Mapelli

et al. 2020

Environ. Sci. Technol.

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In this paper, a new data set of polychlorinated dibenzo- p -dioxin and dibenzofuran (PCDD/Fs) half-lives (HLs) in soil is presented. Data are derived from a greenhouse experiment performed with an aged contaminated soil under semi-field conditions, obtained from a National Relevance Site (SIN) located in Northern Italy (SIN Brescia-Caffaro). Ten different treatments (combination of seven plant species with different soil conditions) were considered together with the respective controls (soil without plants). The ability of the plants to stimulate the biodegradation of these compounds was evaluated by measuring the PCDD/F concentration reduction in soil over a period of 18 months. The formation of new bound residues was excluded by using roots as a passive sampler of bioaccessible concentrations. The best treatment which significantly reduced PCDD/F concentrations in soil was the one with Festuca arundinacea (about 11–24% reduction, depending on the congener). These decreases reflected in HLs ranging from 2.5 to 5.8 years. Simulations performed with a dynamic air-vegetation-soil model (SoilPlusVeg) confirmed that these HLs were substantially due to biodegradation rather than other loss processes. Because no coherent PCDD/F degradation HL data sets are currently available for soil, they could substantially improve the predictions of soil remediation time, long-range transport, and food chain transfer of these chemicals using multimedia fate models.

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Section: Resultsmentioning

confidence: 99%

New Data Set of Polychlorinated Dibenzo-p-dioxin and Dibenzofuran Half-Lives: Natural Attenuation and Rhizoremediation Using Several Common Plant Species in a Weathered Contaminated Soil

Terzaghi

Vergani

Mapelli

et al. 2020

Environ. Sci. Technol.

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“…Plants generally harbor vastly diverse microbiota in various plant compartments, including the rhizosphere, endosphere and phyllosphere, which contribute to the host plant’s health and productivity [ 35 ]. Although these plant microbiomes have widely explored in model plants (e.g., Arabidopsis thaliana ) [ 36 ], crops (e.g., wheat, maize and) [ 37 , 38 ] and tress (e.g., poplar) [ 39 ], the information about the microbiomes associated with metallophytes is still very limited. Here, we systematically investigated the diversity and community structure of bacteria present in the rhizosphere and endosphere of C .…”

Section: Discussionmentioning

confidence: 99%

Deciphering the Endophytic and Rhizospheric Microbial Communities of a Metallophyte Commelina communis in Different Cu-Polluted Soils

Ren

Zeng

et al. 2021

Microorganisms

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Metallophytes microbiota play a key role in plant growth and resistance to heavy metal stress. Comparing to the well-studied single or some specific plant growth-promoting (PGP) bacterial strains, our current understanding of the structural and functional variations of microbiome of metallophytes is still limited. Here, we systematically investigated the endophytic and rhizosphere bacterial community profiles of a metallophyte Commelina communis growing in different Cu-polluted soils by high-throughput sequencing technology. The results showed that the rhizosphere communities of C. communis exhibited a much higher level of diversity and richness than the endosphere communities. Meanwhile, shifts in the bacterial community composition were observed between the rhizosphere and endosphere of C. communis, indicating plant compartment was a strong driver for the divergence between rhizosphere and endosphere community. Among the environmental factors, soil Cu content, followed by OM, TP and TN, played major roles in shaping the bacterial community structure of C. communis. At the highly Cu-contaminated site, Pseudomonas and Sphingomonas were the predominant genera in the endophytic and rhizospheric bacterial communities, respectively, which might enhance copper tolerance as PGP bacteria. In summary, our findings will be useful to better understand metallophyte–microbe interactions and select suitable bacterial taxa when facilitating phytoremediation.

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“…In comparison with fertilized soils, the relative abundance of several prokaryotic and fungal genera was higher in CF ( Figures S1 and S2 ). Prokaryotes, such as Brevundimonas and Limnohabitans , were mostly reported to be ubiquitous [ 68 , 69 ], whereas Massilia and Phenylobacterium were associated with biodegradation activity [ 30 ]. Several of these fungal genera are among agronomically promising taxa.…”

Section: Discussionmentioning

confidence: 99%

“…The tubers were washed under running tap water to remove any adhering soil. The surface of each tuber was sterilized by submerging into 70% ethanol solution for 15 s followed by flaming according to a previous study [ 30 ]. This procedure was repeated twice, and sterilized tubers were then blotted on agar plates to verify the sterilization process.…”

Section: Methodsmentioning

confidence: 99%

“…However, 16S rRNA amplicons were prepared using three sequential PCRs. In the first PCR, amplicons of the 16S rRNA gene were generated using 515 forward and 1068 reverse (5′-CTGRCGRCRRCCATGCA-3′) primers together with anti-mitochondrial and anti-plastid peptide-nucleic acids (PNAs) (PNABio, Thousand Oaks, CA, USA) to inhibit the amplification of plant organelle DNA [ 30 ]. The first 15 µL reactions contained 0.3 µM of each PNA probe, 0.3 µM of each primer (Sigma-Aldrich, St Louis, MO, USA), 0.02 U/µL of KAPA HiFi HotStart ReadyMix (Kapa Biosystems, Wilmington, MA, USA), template DNA (~10 ng/µL) and water for molecular biology (Sigma-Aldrich, St Louis, MO, USA).…”

Section: Methodsmentioning

confidence: 99%

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Microbial Communities in Soils and Endosphere of Solanum tuberosum L. and their Response to Long-Term Fertilization

et al. 2020

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An understanding of how fertilization influences endophytes is crucial for sustainable agriculture, since the manipulation of the plant microbiome could affect plant fitness and productivity. This study was focused on the response of microbial communities in the soil and tubers to the regular application of manure (MF; 330 kg N/ha), sewage sludge (SF; 330 and SF3x; 990 kg N/ha), and chemical fertilizer (NPK; 330-90-300 kg N-P-K/ha). Unfertilized soil was used as a control (CF), and the experiment was set up at two distinct sites. All fertilization treatments significantly altered the prokaryotic and fungal communities in soil, whereas the influence of fertilization on the community of endophytes differed for each site. At the site with cambisol, prokaryotic and fungal endophytes were significantly shifted by MF and SF3 treatments. At the site with chernozem, neither the prokaryotic nor fungal endophytic communities were significantly associated with fertilization treatments. Fertilization significantly increased the relative abundance of the plant-beneficial bacteria Stenotrophomonas, Sphingomonas and the arbuscular mycorrhizal fungi. In tubers, the relative abundance of Fusarium was lower in MF-treated soil compared to CF. Although fertilization treatments clearly influenced the soil and endophytic community structure, we did not find any indication of human pathogens being transmitted into tubers via organic fertilizers.

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Bacterial succession in oil-contaminated soil under phytoremediation with poplars

Cited by 42 publications

References 103 publications

New Data Set of Polychlorinated Dibenzo-p-dioxin and Dibenzofuran Half-Lives: Natural Attenuation and Rhizoremediation Using Several Common Plant Species in a Weathered Contaminated Soil

New Data Set of Polychlorinated Dibenzo-p-dioxin and Dibenzofuran Half-Lives: Natural Attenuation and Rhizoremediation Using Several Common Plant Species in a Weathered Contaminated Soil

Deciphering the Endophytic and Rhizospheric Microbial Communities of a Metallophyte Commelina communis in Different Cu-Polluted Soils

Microbial Communities in Soils and Endosphere of Solanum tuberosum L. and their Response to Long-Term Fertilization

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