Impact of nitrogen-polycyclic aromatic hydrocarbons on phenanthrene and benzo[a]pyrene mineralisation in soil

Anyanwu, Ihuoma N.; Ikpikpini, Ojerime C.; Semple, Kirk T.

doi:10.1016/j.ecoenv.2017.09.019

Cited by 7 publications

(5 citation statements)

References 46 publications

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“…Despite the widespread uses of N-PAHs, and previous N-PAHs studies in literature (Anyanwu and Semple, 2015a;2015b;2016a;Anyanwu et al, 2017), there has not been information of their impacts on microbial utilization of 14 C-glucose and/or synthesis of cell biomass in soil. Functionally, microbes can act as relevant indicators of environmental pollution; as a result, there is great need to assess the impact of N-PAHs on soil microbial metabolism and biosynthesis of cell biomass.…”

Section: Introductionmentioning

confidence: 99%

Impact of single and binary mixtures of phenanthrene and N-PAHs on microbial utilization of 14C-glucose in soil

Anyanwu

Semple

2018

Soil Biology and Biochemistry

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Microbes are susceptible to contaminant effects, and high concentration of chemicals in soil can impact on microbial growth, density, viability and development. The impact of single and binary mixtures of phenanthrene and its nitrogen-containing polycyclic aromatic hydrocarbon analogues (N-PAHs) on microbial metabolism of 14 C-glucose in soil was measured over a 90 d soil-contact time. Impacts were assessed by measuring the rates and mean overall extents of mineralisation (%), as well as the incorporation of 14 C-glucose into the microbial biomass. The result revealed that the extents of 14 C-glucose mineralisation were consistently greater in N-PAH amended soils than the control and phenanthrene soils with increased incubations. This indicates a trend of increasing diversion of C from biosynthesis to maintenance requirement by soil microorganisms. Furthermore, biomass uptake in the amended soils showed reduced substrate utilization (fixed-kEC), suggesting that N-PAHs decreased the amount of substrate-C that was incorporated into the microbial biomass. This however, signifies that N-PAHs imposes oxidative stress on soil microbial community.

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Section: Introductionmentioning

confidence: 99%

Impact of single and binary mixtures of phenanthrene and N-PAHs on microbial utilization of 14C-glucose in soil

Anyanwu

Semple

2018

Soil Biology and Biochemistry

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“…It played an important role in its toxic effects both on plants, invertebrates, and microorganisms. Results found that there was no significant mineralization of B(a)P in soils in the rates and extents even over a 90 days incubation period (Anyanwu et al, 2018), and existed the remobilization risk of non‐extractable residues (NERs depending on the aging, spiked concentration, and soil properties (Luo et al, 2012; Umeh et al, 2018). We sampled and purchased soil samples with some uncertainty, and they can represent the complicated real environmental conditions.…”

Section: Discussionmentioning

confidence: 99%

“…Benzo(a)pyrene [B(a)P] with five fused benzene rings is a ubiquitous soil pollutant, which has been regarded as a representative indicator of polycyclic aromatic hydrocarbons, due to its persistence, biological toxicity, carcinogenicity, mutagenicity, and potential for bioaccumulation (Du et al, 2020; IARC, 2012; Lemieux et al, 2015). Reports showed that there exists no significant mineralization of B(a)P in soils (in the rates and extent) even over a 90 d incubation period (Anyanwu et al, 2018). Although non‐extractable residues (NER) could be formed after 33 d of aging, the remobilization risks still exist depending on the aging time, spiked concentrations, and soil properties (Luo et al, 2012; Umeh et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

“…Reports showed that there exists no significant mineralization of B(a)P in soils (in the rates and extent) even over a 90 d incubation period (Anyanwu et al, 2018). Although non-extractable residues (NER) could be formed after 33 d of aging, the remobilization risks still exist depending on the aging time, spiked concentrations, and soil properties (Luo et al, 2012;Umeh et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

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Bioavailability and toxicity variation of benzo(a)pyrene in three soil–wheat systems: Indicators of soil quality

Teng

Zhou

2021

Land Degrad Dev

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Benzo(a)pyrene [B(a)P] as a representative polycyclic aromatic hydrocarbons (PAHs) is of worldwide i interest and widely studied in various fields. However, biological and biochemical actions of B(a)P in soil–wheat systems are still rarely reported. In view of the fact that the contents of B[a]P as a ubiquitous soil pollutant in the environment varies greatly, in our study at the laboratory‐scale we explored control factors and aimed to increase basic knowledge of its variations and effects on soil–wheat systems. We studied this for different soil types (red, black, and brown) and for soils newly artificially contaminated (at rates of 0.1, 1, and 10 mg kg−1), to provide some references for complicated 'real' cases. The bioavailability (extractability and bioaccumulation) and basic biological toxicity were tested. Results showed that B(a)P concentrations in soil–wheat (Tritticum aestivum L.) systems extracted by HPCD were insignificantly (p > 0.05) higher than Tenax‐TA, and varied with soil types and spiked concentrations. Also, the root and shoot length were mostly inhibited from 0.88% to 26.35%, and 5.46% to 54.85%, respectively, by B(a)P in different soil types and increased with its increasing concentration. Comparatively, higher bioconcentration factor and translocation factor values were observed under lower group in red soil–wheat systems, and under higher added groups in black and brown soil–wheat systems. Moreover, inhibitive effects posed by B(a)P were mainly targeted at wheat shoots in these soils. This study provided a knowledge of B(a)P in ecosystems with different soil types and specific plant species, further to serve for soil environmental protection with many variations.

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“…Soil contaminated with polynuclear aromatic hydrocarbons (PAHs) is a major environmental problem worldwide, mainly caused by the incomplete combustion of organic macromolecule substances generally concerning industrial and urban activities 1 . PAHs such as phenanthrene (PHE) and pyrene (PYR) have become the most ubiquitous environmental pollutants 2 . Due to highly mutagenic and carcinogenic properties and being commonly found in soil at high concentrations in many countries, PHE and PYR soil contamination has attracted particular attention 3 .…”

Section: Introductionmentioning

confidence: 99%

Effect of arbuscular mycorrhizal fungi (AMF) and plant growth-promoting rhizobacteria (PGPR) on microbial community composition of phenanthrene and pyrene contaminated soils using Illumina HiSeq sequencing

Liu

Guo

2021

Preprint

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In order to determine the influence of arbuscular mycorrhizal fungi (AMF, Glomus versiforme) and plant growth-promoting rhizobacteria (PGPR, Pseudomonas fluorescens, Ps2-6) on degradation of phenanthrene (PHE) and pyrene (PYR) and the change of microbial community composition in soils planted with tall fescue (Festuca elata), four treatments were set up in phenanthrene (PHE) and pyrene (PYR) contaminated soil: tall fescue (CK), AMF + tall fescue (GV), PGPR + tall fescue (PS), and AMF + PGPR + tall fescue (GVPS). Our results showed that the highest removal percentage of PHE and PYR in contaminated soil as well as biomass of tall fescue were observed in GVPS. PHE and PYR accumulation by tall fescue roots were higher than shoots, the mycorrhizal status was best manifested in the roots of tall fescue inoculated with GVPS, and GVPS significantly increased the number of PGPR proliferation in tall fescue rhizosphere soil. Paired-end Illumina HiSeq analysis of the 16S rRNA gene and Internal Transcribed Spacer (ITS) region sequences was used to assess changes in the bacterial and fungal communities composition of the four treatments. GVPS positively affected the species and abundance of bacteria and fungi in PHE and PYR contaminated soil, an average of 71,144 high quality bacterial 16S rDNA tags and 102,455 ITS tags were obtained in GVPS, and all of them were assigned to 6,327 and 825 operational taxonomic units (OTUs) at a 97% similarity, respectively. Sequence analysis revealed that Proteobacteria was the dominant bacterial phylum, Ascomycota was the dominant fungal phylum in all treatments, whereas Proteobacteria and Glomeromycota were the most prevalent bacterial and fungal phyla in GVPS, respectively. And in the generic level, Planctomyces and Meyerozyma were the richest bacterial and fungal genus in all treatments, respectively, whereas Sphingomonas and Fusarium were the dominant bacterial and fungi genus in GVPS. Overall, our findings revealed that application of Glomus versiforme and Pseudomonas fluorescens, Ps2-6 had an effective role in improving the growth characteristics, root infection of F. elata and soil microbial community composition in PHE and PYR contaminated soils, but no obvious in degradation efficiencies of PHE and PYR as compared to the control.

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Impact of nitrogen-polycyclic aromatic hydrocarbons on phenanthrene and benzo[a]pyrene mineralisation in soil

Cited by 7 publications

References 46 publications

Impact of single and binary mixtures of phenanthrene and N-PAHs on microbial utilization of 14C-glucose in soil

Impact of single and binary mixtures of phenanthrene and N-PAHs on microbial utilization of 14C-glucose in soil

Bioavailability and toxicity variation of benzo(a)pyrene in three soil–wheat systems: Indicators of soil quality

Effect of arbuscular mycorrhizal fungi (AMF) and plant growth-promoting rhizobacteria (PGPR) on microbial community composition of phenanthrene and pyrene contaminated soils using Illumina HiSeq sequencing

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