Bioremediation of PAH-contaminated shooting range soil using integrated approaches

Wolf, D. C.; Cryder, Zachary; Khoury, Ryan; Carlan, Craig; Gan, Jay

doi:10.1016/j.scitotenv.2020.138440

Cited by 38 publications

(13 citation statements)

References 77 publications

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“…5e & 5f), and the correlation coe cient in the inoculated soil (r = 0.59) was greater than that in the non-inoculated soil (r = 0.05). DH is known as one of the most essential soil enzymes (Wolf et al 2020). DH activity showed a positive correlation with TPH degradation, and it was one of the most highly active enzymes in TPH-contaminated soil (Ramirez et al 2021).…”

Section: Effect Of Novosphingobium Sp Cut1 Inoculation On Tall Fescue...mentioning

confidence: 98%

Effect of Novosphingobium sp. CuT1 inoculation on the rhizoremediation of heavy metal- and diesel-contaminated soil planted with tall fescue

Lee

Cho

2022

Environ Sci Pollut Res

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Rhizoremediation is a promising method based on the synergism between plant and rhizobacteria, which constitutes a promising means to remediate soil co-contaminated with heavy metals and total petroleum hydrocarbons (TPHs). A plant growth-promoting (PGP) rhizobacterium with diesel-degrading capacity and heavy metals tolerance was isolated from the rhizosphere of tall fescue (Festuca arundinacea L.), after which the effects of its inoculation on rhizoremediation performance were evaluated in heavy metal and diesel-contaminated soil planted with tall fescue.The bacterial isolate (Novosphingobium sp. CuT1) was characterized by its production of indole-3-acetic acid (IAA), 1-aminocyclopropane-1carboxylic acid (ACC) deaminase activity, and siderophore productivity as PGP traits. CuT1 was able to grow on 1/10 LB-agar plates containing 5 mM of Cu or 5 mM of Pb. Compared to the rhizoremediation performance of the co-contaminated soil (Cu + Pb + diesel) without inoculation, the bioavailable Cu concentrations in soil and the biomass of tall fescue were signi cantly increased CuT1 inoculation. Additionally, the root growth of tall fescue was also promoted CuT1 inoculation. Correlation analysis showed that Cu bioavailability and bioconcentration factor were positively correlated with CuT1 inoculation. The diesel removal e ciency showed a positive correlation with CuT1 inoculation although diesel removal was below 30%. CuT1 inoculation was positively correlated with IAA and dehydrogenase activity in soil. Moreover, the dry biomass of the tall fescue's roots was highly associated with CuT1 inoculation. Collectively, our ndings suggest that Novosphingobium sp. CuT1 can be utilized as an applicable bioresource to enhance rhizoremediation performance in heavy metal-and TPH-contaminated soils.

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Section: Effect Of Novosphingobium Sp Cut1 Inoculation On Tall Fescue...mentioning

confidence: 98%

Effect of Novosphingobium sp. CuT1 inoculation on the rhizoremediation of heavy metal- and diesel-contaminated soil planted with tall fescue

Lee

Cho

2022

Environ Sci Pollut Res

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“…These PAHs' physiochemical and toxic properties raise a significant concern over their impact on soil and groundwater contamination (Wang et al, 2009 ). Moreover, several reports showed evidence of PAH contamination in different soil and groundwater sources (Sushkova et al, 2018 ; Haleyur et al, 2019 ; Lu et al, 2019 ; Liang et al, 2020 ; Pacwa-Płociniczak et al, 2020 ; Picariello et al, 2020 ; Wang Y. et al, 2020 ; Wolf et al, 2020 ; Ambade et al, 2021a , b ; Qiao et al, 2021 ). Therefore, the PAH contamination problem requires more research in this direction using chemical cleavage.…”

Section: Soil and Groundwater Contamination By Pahs And Aromatic Ring Hydroxylating Dioxygenase (Arhd)mentioning

confidence: 99%

New Trends in Bioremediation Technologies Toward Environment-Friendly Society: A Mini-Review

Dutta

Shityakov

Khalifa

2021

Front. Bioeng. Biotechnol.

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“…This strategy can also offer attractive economic benefits (Caplan, 1993 ) if the used plants are afterwards collected as a source of added value products for the biomass, biofuel or paper industries. Successful examples of rhizoremediation of polychlorinated biphenyls, PAHs and other contaminants have been frequently reported in the literature (Balseiro‐Romero et al ., 2016 ; Zafra et al ., 2017 ; Terzaghi et al ., 2019 ; Sandhu et al ., 2020 ; Simmer et al ., 2020 ; Wolf et al ., 2020 ; Zhao et al ., 2021 ). However, there are still some key aspects of plant–bacteria interactions during rhizoremediation that remain unknown and may preclude its successful outcome.…”

Section: Introductionmentioning

confidence: 99%

PahT regulates carbon fluxes in Novosphingobium sp. HR1a and influences its survival in soil and rhizospheres

Segura

Udaondo

Molina

2021

Environmental Microbiology

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Novosphingobium sp. HR1a is a good biodegrader of PAHs and aromatic compounds, and also a good colonizer of rhizospheric environments. It was previously demonstrated that this microbe is able to cometabolize nutrients existing in root exudates together with the PAHs. We have revealed here that PahT, a regulator of the IclR-family, regulates the central carbon fluxes favouring the degradation of PAHs and mono-aromatic compounds, the ethanol and acetate metabolism and the uptake, phosphorylation and further degradation of mono-and oligosaccharides through a phosphoenolpyruvate transferase system (PTS). As final products of these fluxes, pyruvate and acetyl-CoA are obtained. The pahT gene is located within a genomic region containing two putative transposons that carry all the genes for PAH catabolism; PahT also regulates these genes. Furthermore, encoded in this genomic region, there are genes that are involved in the recycling of phosphoenolpyruvate, from the obtained pyruvate, which is the motor molecule involved in the saccharide uptake by the PTS system. The co-metabolism of PAHs with different carbon sources, together with the activation of the thiosulfate utilization and an alternative cytochrome oxidase system, also regulated by PahT, represents an advantage for Novosphingobium sp. HR1a to survive in rhizospheric environments.

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Bioremediation of PAH-contaminated shooting range soil using integrated approaches

Cited by 38 publications

References 77 publications

Effect of Novosphingobium sp. CuT1 inoculation on the rhizoremediation of heavy metal- and diesel-contaminated soil planted with tall fescue

Effect of Novosphingobium sp. CuT1 inoculation on the rhizoremediation of heavy metal- and diesel-contaminated soil planted with tall fescue

New Trends in Bioremediation Technologies Toward Environment-Friendly Society: A Mini-Review

PahT regulates carbon fluxes in Novosphingobium sp. HR1a and influences its survival in soil and rhizospheres

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