Differential degradation of BDE-3 and BDE-209 by the Shewanella oneidensis MR-1-mediated Fenton reaction

Shi, Min; Xia, Kemin; Peng, Zhaoliang; Jiang, Yongguang; Dong, Yiran; Shi, Liang

doi:10.1016/j.ibiod.2020.105165

Cited by 10 publications

(7 citation statements)

References 29 publications

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“…Ferrihydrite was synthesized and characterized by following the established protocols as described previously (Peng et al, 2020; Schwertmann & Cornell, 2000; Yang et al, 2020). All the results of characterizing synthesized ferrihydrite were consistent with those reported before (Peng et al, 2020; Shi et al, 2021; Yang et al, 2020). The characterized ferrihydrite was stored at 4°C with a shelf life of 60 days.…”

Section: Methodssupporting

confidence: 91%

“…After centrifugation (5000 g , 4°C and 5 min), the amount of ABTS •+ , which is the product of reaction between ABTS and H 2 O 2 , in the supernatants was determined by a UV–Vis spectrometer (Kadnikova & Kostic, 2002). Horseradish peroxidase was used for establishing H 2 O 2 standard curve and purchased from Macklin (Peng et al, 2020; Shi et al, 2021).…”

Section: Methodsmentioning

confidence: 99%

“…Shewanella oneidensis was obtained and cultured in lysogeny broth (LB) medium as described before (Peng et al, 2020;Shi et al, 2021). The procedure for making a clean gene cluster deletion in S. oneidensis was described previously (Gorby et al, 2006;Shi et al, 2006;Shi et al, 2008).…”

Section: Bacterial Strains Culture Conditions Gene Deletion and Cloningmentioning

confidence: 99%

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The roles of DmsEFAB and MtrCAB in extracellular reduction of iodate by Shewanella oneidensis MR‐1 with lactate as the sole electron donor

Guo

Jiang

et al. 2022

Environmental Microbiology

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To investigate their roles in extracellular reduction of iodate (IO3−) with lactate as an electron donor, the gene clusters of dmsEFAB, mtrCAB, mtrDEF and so4360‐4357 in Shewanella oneidensis MR‐1 were systematically deleted. Deletions of dmsEFAB and/or mtrCAB gene clusters diminished the bacterial ability to reduce IO3−. Furthermore, DmsEFAB and MtrCAB worked collaboratively to reduce IO3− of which DmsEFAB played a more dominant role than MtrCAB. MtrCAB was involved in detoxifying the reaction intermediate hydrogen peroxide (H2O2). The reaction intermediate hypoiodous acid (HIO) was also found to inhibit microbial IO3− reduction. SO4360‐4357 and MtrDEF, however, were not involved in IO3− reduction. Collectively, these results suggest a novel mechanism of extracellular reduction of IO3− at molecular level, in which DmsEFAB reduces IO3− to HIO and H2O2. The latter is further reduced to H2O by MtrCAB to facilitate the DmsEFAB‐mediated IO3− reduction. The extracellular electron transfer pathway of S. oneidensis MR‐1 is believed to mediate electron transfer from bacterial cytoplasmic membrane, across the cell envelope to the DmsEFAB and MtrCAB on the bacterial outer membrane.

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Section: Methodssupporting

confidence: 91%

Section: Methodsmentioning

confidence: 99%

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The roles of DmsEFAB and MtrCAB in extracellular reduction of iodate by Shewanella oneidensis MR‐1 with lactate as the sole electron donor

Guo

Jiang

et al. 2022

Environmental Microbiology

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“…Depending on the settings and the environmental conditions, MR-1 often has different forms of respiration. For example, it can exist as a facultative anaerobe that utilises Mn(III/IV)/Fe(III) as terminal electron acceptors or molecular oxygen (O 2 ) for aerobic respiration [126,231]. These anaerobic and aerobic forms of respiration often result in the generation of Fe(II) and hydrogen peroxide (H 2 O 2 ) [135,206,229,231].…”

Section: Eet Process In Shewanella Oneidensis Mr-1mentioning

confidence: 99%

Significance of Shewanella Species for the Phytoavailability and Toxicity of Arsenic—A Review

Darma

Yang

Zandi

et al. 2022

Biology

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The distribution of arsenic continues due to natural and anthropogenic activities, with varying degrees of impact on plants, animals, and the entire ecosystem. Interactions between iron (Fe) oxides, bacteria, and arsenic are significantly linked to changes in the mobility, toxicity, and availability of arsenic species in aquatic and terrestrial habitats. As a result of these changes, toxic As species become available, posing a range of threats to the entire ecosystem. This review elaborates on arsenic toxicity, the mechanisms of its bioavailability, and selected remediation strategies. The article further describes how the detoxification and methylation mechanisms used by Shewanella species could serve as a potential tool for decreasing phytoavailable As and lessening its contamination in the environment. If taken into account, this approach will provide a globally sustainable and cost-effective strategy for As remediation and more information to the literature on the unique role of this bacterial species in As remediation as opposed to conventional perception of its role as a mobiliser of As.

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“…Shewanella spp., environmentally ubiquitous facultative anaerobic bacteria, produce Fe(II) by reducing Fe(III) under anaerobic conditions and H 2 O 2 by reducing O 2 under aerobic conditions, thus efficiently inducing the Fenton reaction by alternating anaerobic-aerobic cultures. The degradation of pentachlorophenol ( McKinzi and Dichristina, 1999 ), 1,4-dioxane ( Sekar and DiChristina, 2014 ), enrofloxacin ( Yan et al, 2016 ), polybrominated diphenyl ethers ( Peng et al, 2020 ; Shi et al, 2021 ), and polystyrene ( Yang et al, 2022 ) by the Fenton reaction driven by Shewanella spp. has been reported.…”

Section: Introductionmentioning

confidence: 99%

Long-term continuous degradation of carbon nanotubes by a bacteria-driven Fenton reaction

Takahashi,

Hori

2023

Front. Microbiol.

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Very few bacteria are known that can degrade carbon nanotubes (CNTs), and the only known degradation mechanism is a Fenton reaction driven by Labrys sp. WJW with siderophores, which only occurs under iron-deficient conditions. No useful information is available on the degradation rates or long-term stability and continuity of the degradation reaction although several months or more are needed for CNT degradation. In this study, we investigated long-term continuous degradation of oxidized (carboxylated) single-walled CNTs (O-SWCNTs) using bacteria of the genus Shewanella. These bacteria are widely present in the environment and can drive the Fenton reaction by alternating anaerobic-aerobic growth conditions under more general environmental conditions. We first examined the effect of O-SWCNTs on the growth of S. oneidensis MR-1, and it was revealed that O-SWCNTs promote growth up to 30 μg/mL but inhibit growth at 40 μg/mL and above. Then, S. oneidensis MR-1 was subjected to incubation cycles consisting of 21-h anaerobic and 3-h aerobic periods in the presence of 30 μg/mL O-SWCNTs and 10 mM Fe(III) citrate. We determined key factors that help prolong the bacteria-driven Fenton reaction and finally achieved long-term continuous degradation of O-SWCNTs over 90 d. By maintaining a near neutral pH and replenishing Fe(III) citrate at 60 d, a degraded fraction of 56.3% was reached. S. oneidensis MR-1 produces Fe(II) from Fe(III) citrate, a final electron acceptor for anaerobic respiration during the anaerobic period. Then, ·OH is generated through the Fenton reaction by Fe(II) and H2O2 produced by MR-1 during the aerobic period. ·OH was responsible for O-SWCNT degradation, which was inhibited by scavengers of H2O2 and ·OH. Raman spectroscopy and X-ray photoelectron spectroscopy showed that the graphitic structure in O-SWCNTs was oxidized, and electron microscopy showed that long CNT fibers initially aggregated and became short and isolated during degradation. Since Shewanella spp. and iron are ubiquitous in the environment, this study suggests that a Fenton reaction driven by this genus is applicable to the degradation of CNTs under a wide range of conditions and will help researchers develop novel methods for waste treatment and environmental bioremediation against CNTs.

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Differential degradation of BDE-3 and BDE-209 by the Shewanella oneidensis MR-1-mediated Fenton reaction

Cited by 10 publications

References 29 publications

The roles of DmsEFAB and MtrCAB in extracellular reduction of iodate by Shewanella oneidensis MR‐1 with lactate as the sole electron donor

The roles of DmsEFAB and MtrCAB in extracellular reduction of iodate by Shewanella oneidensis MR‐1 with lactate as the sole electron donor

Significance of Shewanella Species for the Phytoavailability and Toxicity of Arsenic—A Review

Long-term continuous degradation of carbon nanotubes by a bacteria-driven Fenton reaction

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