Soil microbiome response to 2-chlorodibenzo-p-dioxin during bioremediation of contaminated tropical soil in a microcosm-based study

Saibu, Salametu; Adebusoye, Sunday A.; Oyetibo, Ganiyu Oladunjoye

doi:10.1016/j.jhazmat.2023.131105

Cited by 6 publications

(5 citation statements)

References 49 publications

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“…In the less polluted CVS site, β-Proteobacteria, next to γ-Proteobacteria among the Proteobacteria phylum, predominates, suggesting the vulnerability of this class to POPs and not necessarily HMs. The resilience of α-Proteobacteria in POP-burdened environmental systems noted in this study is consistent with our recent findings (Saibu et al, 2023) and those of Obi et al (2016). Similar resilience is also observed among the δ-Proteobacteria, a taxon that was not found in the CVS soil.…”

Section: Frontiers In Environmental Sciencesupporting

confidence: 94%

“…Therefore, CCA determined the correlation between the environmental factors and the bacterial community in each of these sites. Such information is necessary for providing baseline knowledge of contaminated sites, which is essential for designing bioremediation strategies in polluted systems (Saibu et al, 2023). Metagenomics data emanating from several laboratories have often declared Bacteroidetes and Proteobacteria as predominant bacterial taxonomic groups in landfill sites (Wang et al, 2017;Zainun and Samarani, 2018;Sandhu et al, 2022), a trend that is consistent with the results obtained in this study, except for CVS.…”

Section: Frontiers In Environmental Sciencesupporting

confidence: 87%

“…Interestingly, two bacterial species belonging to the genera Serratia and Bacillus which were unambiguously demonstrated to utilize dibenzofuran, 2,8-dichlorodibenzofuran, and 2,7-dibenzo-p-dioxin as the sole sources of carbon and energy were obtained from this site (Saibu et al, 2020). In a related study, we also reported the successful adaptation of both taxa to dioxin-contaminated soil and touted their potential use as bioindicators of dioxin pollution (Saibu et al, 2023). Interestingly, CS was the only site where dioxin was detected, which may likely be responsible for the populations of the encountered genera.…”

Section: Frontiers In Environmental Sciencementioning

confidence: 67%

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Geochemistry and metagenomics analyses of bacterial community structure in selected waste dumpsites in Lagos Metropolis, Nigeria

Saibu,

Adebusoye,

Oyetibo

et al. 2023

Front. Environ. Sci.

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Dumpsites are reservoirs of persistent organic pollutants (POPs) and heavy metals (HMs), constituting environmental hazards to humanity. Autochthonous microorganisms in dumpsites exhibit various degrees of responses to contaminants. Unfortunately, there is a dearth of information on the types and concentration of pollutants and the array of microorganisms in these dumpsites which may play important roles in the metabolism of such pollutants or other community processes. Therefore, determining the microbial community structure in such contaminated sites across a municipality is essential for profiling the taxa that would serve as consensus degraders of the pollutants. In this study, soil samples from three dumpsites (Cele, CS; Solous, SS; and Computer Village, CVS) were characterized for geochemical properties using GC-MS, MP-AES, and other analytical protocols, while the dynamics of bacterial communities were evaluated based on their 16S rRNA gene barcodes. A significant difference in the bacterial communities was observed among the dumpsites in relation to the extent of pollution caused by POPs and HMs. CVS, with the highest HM contamination, was rich in Actinobacteria (41.7%) and Acidobacteria (10.2%), in contrast to CS and SS. Proteobacteria (34.1%) and Firmicutes (20%) were the dominant phyla in CS (highest POP contamination), while Bacteroidetes (45.5%) and Proteobacteria (39.9%) were dominant in SS soil. Bacillus was the dominant genus in the most polluted dumpsite. Canonical correspondence analysis revealed that polycyclic aromatic hydrocarbons (PAHs) and HMs shaped the structure of the bacterial operational taxonomic units (OTUs) in the most polluted dumpsite. Out of a total of 706 OTUs, 628 OTUs exhibited a significant correlation (>50%) with benzo(b)fluoranthene, azobenzene, dibenzofurans, pyrene, dibenzo(a,l)pyrene, Cu, and Zn. In particular, Proteobacteria (Achromobacter sp. and Serratia sp.), Bacteroidetes (Zhouia sp.), and Firmicutes (Bacillus sp.) were suggested to be pivotal to the ecophysiology of dumpsite soils contaminated with POPs and HMs. The results generally underscored the importance of metagenomic and physicochemical analyses of polluted systems in enabling correlations for useful prediction of drivers of such ecosystems. This will further improve our understanding of the metabolic potential and adaptation of organisms in such systems.

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Section: Frontiers In Environmental Sciencesupporting

confidence: 94%

Section: Frontiers In Environmental Sciencesupporting

confidence: 87%

Section: Frontiers In Environmental Sciencementioning

confidence: 67%

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Geochemistry and metagenomics analyses of bacterial community structure in selected waste dumpsites in Lagos Metropolis, Nigeria

Saibu,

Adebusoye,

Oyetibo

et al. 2023

Front. Environ. Sci.

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Section: Figuresupporting

confidence: 92%

Recent Research Advances on Heavy Metals, Microplastics, Persistent Organic Pollutants, and Solid Waste in Aquatic and Terrestrial Ecosystems

Zhang,

Xu,

Guo

et al. 2024

Frontiers Research Topics

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Frontiers is more than just an open access publisher of scholarly articles: it is a pioneering approach to the world of academia, radically improving the way scholarly research is managed. The grand vision of Frontiers is a world where all people have an equal opportunity to seek, share and generate knowledge. Frontiers provides immediate and permanent online open access to all its publications, but this alone is not enough to realize our grand goals. Frontiers journal seriesThe Frontiers journal series is a multi-tier and interdisciplinary set of openaccess, online journals, promising a paradigm shift from the current review, selection and dissemination processes in academic publishing. All Frontiers journals are driven by researchers for researchers; therefore, they constitute a service to the scholarly community. At the same time, the Frontiers journal series operates on a revolutionary invention, the tiered publishing system, initially addressing specific communities of scholars, and gradually climbing up to broader public understanding, thus serving the interests of the lay society, too. Dedication to qualityEach Frontiers article is a landmark of the highest quality, thanks to genuinely collaborative interactions between authors and review editors, who include some of the world's best academicians. Research must be certified by peers before entering a stream of knowledge that may eventually reach the public -and shape society; therefore, Frontiers only applies the most rigorous and unbiased reviews. Frontiers revolutionizes research publishing by freely delivering the most outstanding research, evaluated with no bias from both the academic and social point of view. By applying the most advanced information technologies, Frontiers is catapulting scholarly publishing into a new generation. What are Frontiers Research Topics?Frontiers Research Topics are very popular trademarks of the Frontiers journals series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area.

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“…Subjects living in areas characterized by greater environmental pressure showed higher plasmatic levels of dioxins and PCBs, which were correlated with changes in their gut microbiome. Prolonged exposure to pollution promoted the selection in the gut microbiome of several taxa belonging to Actinomycetota and Pseudomonadota, phyla often reported as able to degrade organic pollutants in soils and sediments 33 , 34 and proposed for soil bioremediation 35 , 36 . Moreover, the gut microbiome of subjects living in highly contaminated areas was also enriched in genes related to the degradation of POPs, as well as other organic complex molecules.…”

Section: Discussionmentioning

confidence: 99%

Exposure to environmental pollutants selects for xenobiotic-degrading functions in the human gut microbiome

De Filippis,

Valentino,

Sequino

et al. 2024

Nat Commun

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Environmental pollutants from different chemical families may reach the gut microbiome, where they can be metabolized and transformed. However, how our gut symbionts respond to the exposure to environmental pollution is still underexplored. In this observational, cohort study, we aim to investigate the influence of environmental pollution on the gut microbiome composition and potential activity by shotgun metagenomics. We select as a case study a population living in a highly polluted area in Campania region (Southern Italy), proposed as an ideal field for exposomic studies and we compare the fecal microbiome of 359 subjects living in areas with high, medium and low environmental pollution. We highlight changes in gut microbiome composition and functionality that were driven by pollution exposure. Subjects from highly polluted areas show higher blood concentrations of dioxin and heavy metals, as well as an increase in microbial genes related to degradation and/or resistance to these molecules. Here we demonstrate the dramatic effect that environmental xenobiotics have on gut microbial communities, shaping their composition and boosting the selection of strains with degrading capacity. The gut microbiome can be considered as a pivotal player in the environment-health interaction that may contribute to detoxifying toxic compounds and should be taken into account when developing risk assessment models. The study was registered at ClinicalTrials.gov with the identifier NCT05976126.

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Soil microbiome response to 2-chlorodibenzo-p-dioxin during bioremediation of contaminated tropical soil in a microcosm-based study

Cited by 6 publications

References 49 publications

Geochemistry and metagenomics analyses of bacterial community structure in selected waste dumpsites in Lagos Metropolis, Nigeria

Geochemistry and metagenomics analyses of bacterial community structure in selected waste dumpsites in Lagos Metropolis, Nigeria

Recent Research Advances on Heavy Metals, Microplastics, Persistent Organic Pollutants, and Solid Waste in Aquatic and Terrestrial Ecosystems

Exposure to environmental pollutants selects for xenobiotic-degrading functions in the human gut microbiome

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