Aerobic reduction of selenite and tellurite to elemental selenium and tellurium nanostructures by Alteromonas sp. under saline conditions

Reddy, G. Kiran Kumar; Pathak, Snigdha; Nancharaiah, Y.V.

doi:10.1016/j.ibiod.2023.105571

Cited by 11 publications

(9 citation statements)

References 42 publications

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“…In another study, Reddy et al reported that Alteromonas sp. could tolerate 7.5 mM of tellurite and 10 mM of selenite [ 53 ]. In similar studies, MIC results of a Pseudomonas sp .…”

Section: Resultsmentioning

confidence: 99%

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Simultaneous bioreduction of tellurite and selenite by Yarrowia lipolytica, Trichosporon cutaneum, and their co-culture along with characterization of biosynthesized Te–Se nanoparticles

Hosseini,

Hadian,

Lashani

et al. 2023

Microb Cell Fact

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Background Natural and anthropogenic activities, such as weathering of rocks and industrial processes, result in the release of toxic oxyanions such as selenium (Se) and tellurium (Te) into the environment. Due to the high toxicity of these compounds, their removal from the environment is vital. Results In this study, two yeast strains, Yarrowia lipolytica and Trichosporon cutaneum, were selected as the superior strains for the bioremediation of tellurium and selenium. The reduction analyses showed that exposure to selenite induced more detrimental effects on the strains compared to tellurite. In addition, co-reduction of pollutants displayed almost the same results in selenite reduction and more than ~ 20% higher tellurite reduction in 50 h, which shows that selenite triggered higher tellurite reduction in both strains. The selenite and tellurite kinetics of removal were consistent with the first-order model because of their inhibitory behavior. The result of several characterization experiments, such as FE-SEM (Field emission scanning electron microscopy), dynamic light scattering (DLS), Fourier-transform infrared spectroscopy (FTIR), X-ray diffractometer (XRD), and dispersive X-ray (EDX) on Te–Se nanoparticles (NPs) revealed that the separated Te–Se NPs were needle-like, spherical, and amorphous, consisted of Te–Se NPs ranging from 25 to 171 nm in size, and their surface was covered with different biomolecules. Conclusions Remarkably, this work shows, for the first time, the simultaneous bioreduction of tellurite and selenite and the production of Te–Se NPs using yeast strains, indicating their potential in this area, which may be applied to the nanotechnology industry and environmental remediation. Graphical Abstract

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“…In another study, Reddy et al reported that Alteromonas sp. could tolerate 7.5 mM of tellurite and 10 mM of selenite [ 53 ]. In similar studies, MIC results of a Pseudomonas sp .…”

Section: Resultsmentioning

confidence: 99%

“…Reddy et al reported that Alteromonas sp. reduced 100% of 1 and 2 mM of selenite and 86 and 75% of 1 and 2 mM of tellurite in 48 h [ 53 ].…”

Section: Resultsmentioning

confidence: 99%

Simultaneous bioreduction of tellurite and selenite by Yarrowia lipolytica, Trichosporon cutaneum, and their co-culture along with characterization of biosynthesized Te–Se nanoparticles

Hosseini,

Hadian,

Lashani

et al. 2023

Microb Cell Fact

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“…Influent salinity correlates to the application potential of AnMBR for treating Se-containing wastewater, since it can largely determine system performance by simultaneously affecting the microbial community and membrane fouling propensity (Jang et al, 2013;Luo et al, 2015). It has been documented that the excessively high influent salinity was able to inhibit the growth and SeO 3 2− reduction of Se-reducer Alteromonas (Reddy et al, 2023). The salinity of typical Se-laden industrial wastewaters after preconditioning was reported to be around 1%, corresponding to a NaCl concentration of 10 g/L (Soda et al, 2011).…”

Section: Methodsmentioning

confidence: 99%

Evaluation of selenite reduction under salinity and sulfate stress in anaerobic membrane bioreactor

Zhang

Liu

Zhang

et al. 2023

Front. Bioeng. Biotechnol.

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Current microbial reduction technologies have been proven to be suitable for decontaminating industrial wastewaters containing high concentrations of selenium (Se) oxyanions, however, their application is strictly limited by the elemental Se (Se0) accumulation in the system effluents. In this work, a continuous-flow anaerobic membrane bioreactor (AnMBR) was employed for the first time to treat synthetic wastewater containing 0.2 mM soluble selenite (SeO32−). The SeO32− removal efficiency by the AnMBR was approachable to 100% in most of the time, regardless of the fluctuation in influent salinity and sulfate (SO42−) stress. Se0 particles were always undetectable in the system effluents, owing to their interception by the surface micropores and adhering cake layer of membranes. High salt stress led to the aggravated membrane fouling and diminished content ratio of protein to polysaccharide in the cake layer-contained microbial products. The results of physicochemical characterization suggested that the sludge-attached Se0 particles presented either sphere- or rod-like morphology, hexagonal crystalline structure and were entrapped by the organic capping layer. According to the microbial community analysis, increasing influent salinity led to the diminished population of non-halotolerant Se-reducer (Acinetobacter) and increased abundance of halotolerant sulfate reducing bacteria (Desulfomicrobium). In the absence of Acinetobacter, the efficient SeO32− abatement performance of the system could still be maintained, as a result of the abiotic reaction between SeO32− and S2- generated by Desulfomicrobium, which then gave rise to the production of Se0 and S0.

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“…Once tellurium compounds enter cells, they could induce cellular reactions including (1) interference of thiols (redox enzymes); (2) replacement of Se and S in proteins; (3) damage of cell membrane structure; and (4) increased oxidative stress (Goff et al 2021a ; Tang et al 2022 ; Reddy et al 2023 ). Among them, the production of reactive oxygen species (ROS) induced by tellurium oxyanions is the main factor of tellurate toxicity (Peng et al 2022 ).…”

Section: History and Application Of Telluriummentioning

confidence: 99%

Microbial mechanisms to transform the super-trace element tellurium: a systematic review and discussion of nanoparticulate phases

Wei

Guo

et al. 2023

World J Microbiol Biotechnol

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Tellurium is a super-trace metalloid on Earth. Owing to its excellent physical and chemical properties, it is used in industries such as metallurgy and manufacturing, particularly of semiconductors and – more recently – solar panels. As the global demand for tellurium rises, environmental issues surrounding tellurium have recently aroused concern due to its high toxicity. The amount of tellurium released to the environment is increasing, and microorganisms play an important role in the biogeochemical cycling of environmental tellurium. This review focuses on novel developments on tellurium transformations driven by microbes and includes the following sections: (1) history and applications of tellurium; (2) toxicity of tellurium; (3) microbial detoxification mechanisms against soluble tellurium anions including uptake, efflux and methods of reduction, and reduced ability to cope with oxidation stress or repair damaged DNA; and (4) the characteristics and applications of tellurium nanoparticles (TeNPs) produced by microbes. This review raises the awareness of microorganisms in tellurium biogeochemical cycling and the growing applications for microbial tellurium nanoparticles.

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Aerobic reduction of selenite and tellurite to elemental selenium and tellurium nanostructures by Alteromonas sp. under saline conditions

Cited by 11 publications

References 42 publications

Simultaneous bioreduction of tellurite and selenite by Yarrowia lipolytica, Trichosporon cutaneum, and their co-culture along with characterization of biosynthesized Te–Se nanoparticles

Simultaneous bioreduction of tellurite and selenite by Yarrowia lipolytica, Trichosporon cutaneum, and their co-culture along with characterization of biosynthesized Te–Se nanoparticles

Evaluation of selenite reduction under salinity and sulfate stress in anaerobic membrane bioreactor

Microbial mechanisms to transform the super-trace element tellurium: a systematic review and discussion of nanoparticulate phases

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