Electron shuttles alter selenite reduction pathway and redistribute formed Se(0) nanoparticles

Xia, Ze-Chao; Cheng, Yuanyuan; Kong, Wan-Qin; Shi, Xianyang; Yang, Tao; Wang, Mingyu; Huang, Fen; Wu, Chao

doi:10.1016/j.procbio.2015.12.015

Cited by 14 publications

(3 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Besides, in co-contaminant bioremediation, YE + cultures performed better in removing phenol and tellurite within 98 h. This might be due to the fact that yeast extract has a significant amount of riboflavin, an electron shuttle that can be used to accelerate bioremediation 46 . Also, compared to the YE + cultures, black TeNPs were less prevalent in the YE- cultures.…”

Section: Resultsmentioning

confidence: 99%

“…Also, compared to the YE + cultures, black TeNPs were less prevalent in the YE- cultures. In a study by 46 , the effect of shuttles on selenite bioreduction was investigated in Shewanella oneidensis MR-1. The results showed that the pathway of selenite bioreduction was changed in this bacterium in the presence of riboflavin, and selenite nanoparticle was produced extracellularly.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Simultaneous bioremediation of phenol and tellurite by Lysinibacillus sp. EBL303 and characterization of biosynthesized Te nanoparticles

Hosseini

Lashani

Moghimi

2023

Sci Rep

View full text Add to dashboard Cite

Aromatic compounds and metalloid oxyanions are abundant in the environment due to natural resources and industrial wastes. The high toxicity of phenol and tellurite poses a significant threat to all forms of life. A halotolerant bacterium was isolated and identified as Lysinibacillus sp. EBL303. The remediation analysis shows that 500 mg/L phenol and 0.5 mM tellurite can be remediated entirely in separate cultures within 74 and 56 h, respectively. In addition, co-remediation of pollutants resulted in the same phenol degradation and 27% less tellurite reduction within 98 h. Since phenol and tellurite exhibited inhibitory behavior, their removal kinetics fitted well with the first-order model. In the characterization of biosynthesized tellurium nanoparticles (TeNPs), transmission electron microscopy, dynamic light scattering, FE-SEM, and dispersive X-ray (EDX) showed that the separated intracellular TeNPs were spherical and consisted of only tellurium with 22–148 nm in size. Additionally, investigations using X-ray diffraction and Fourier-transform infrared spectroscopy revealed proteins and lipids covering the surface of these amorphous TeNPs. Remarkably, this study is the first report to demonstrate the simultaneous bioremediation of phenol and tellurite and the biosynthesis of TeNPs, indicating the potential of Lysinibacillus sp. EBL303 in this matter, which can be applied to environmental remediation and the nanotechnology industry.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Simultaneous bioremediation of phenol and tellurite by Lysinibacillus sp. EBL303 and characterization of biosynthesized Te nanoparticles

Hosseini

Lashani

Moghimi

2023

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Impressively, the selenite reduction process in S. oneidensis MR-1 cells could be well tuned by electron shuttles such as AQDS and riboflavin. The addition of these electron shuttles not only accelerated markedly the selenite reduction rate but also diverted the location of Se-NPs from inside to outside cells [ 88 ]. Moreover, the shape, size distribution and formation rate of Se-NPs could be effectively tuned by multiple biosynthetic reaction conditions, including bacterial biomass, selenite concentration, dissolved oxygen, incubation temperature and reaction time [ 89 , 97 ].…”

Section: Biosynthesis Of Metal Nanoparticlesmentioning

confidence: 99%

Bacterial extracellular electron transfer: a powerful route to the green biosynthesis of inorganic nanomaterials for multifunctional applications

et al. 2021

View full text Add to dashboard Cite

Synthesis of inorganic nanomaterials such as metal nanoparticles (MNPs) using various biological entities as smart nanofactories has emerged as one of the foremost scientific endeavors in recent years. The biosynthesis process is environmentally friendly, cost-effective and easy to be scaled up, and can also bring neat features to products such as high dispersity and biocompatibility. However, the biomanufacturing of inorganic nanomaterials is still at the trial-and-error stage due to the lack of understanding for underlying mechanism. Dissimilatory metal reduction bacteria, especially Shewanella and Geobacter species, possess peculiar extracellular electron transfer (EET) features, through which the bacteria can pump electrons out of their cells to drive extracellular reduction reactions, and have thus exhibited distinct advantages in controllable and tailorable fabrication of inorganic nanomaterials including MNPs and graphene. Our aim is to present a critical review of recent state-of-the-art advances in inorganic biosynthesis methodologies based on bacterial EET using Shewanella and Geobacter species as typical strains. We begin with a brief introduction about bacterial EET mechanism, followed by reviewing key examples from literatures that exemplify the powerful activities of EET-enabled biosynthesis routes towards the production of a series of inorganic nanomaterials and place a special emphasis on rationally tailoring the structures and properties of products through the fine control of EET pathways. The application prospects of biogenic nanomaterials are then highlighted in multiple fields of (bio-) energy conversion, remediation of organic pollutants and toxic metals, and biomedicine. A summary and outlook are given with discussion on challenges of bio-manufacturing with well-defined controllability.

show abstract

Goethite and riboflavin synergistically enhance Cr(VI) reduction by Shewanella oneidensis MR-1

Zheng

Yang

et al. 2023

Biodegradation

View full text Add to dashboard Cite

Electron shuttles alter selenite reduction pathway and redistribute formed Se(0) nanoparticles

Cited by 14 publications

References 28 publications

Simultaneous bioremediation of phenol and tellurite by Lysinibacillus sp. EBL303 and characterization of biosynthesized Te nanoparticles

Simultaneous bioremediation of phenol and tellurite by Lysinibacillus sp. EBL303 and characterization of biosynthesized Te nanoparticles

Bacterial extracellular electron transfer: a powerful route to the green biosynthesis of inorganic nanomaterials for multifunctional applications

Goethite and riboflavin synergistically enhance Cr(VI) reduction by Shewanella oneidensis MR-1

Contact Info

Product

Resources

About