Elucidating Multiple Electron-Transfer Pathways for Metavanadate Bioreduction by Actinomycetic Streptomyces microflavus

Environmental Science & Technology, Journal Year: 2023, Volume and Issue: 57(48), P. 19921 - 19931

Published: Nov. 7, 2023

While microbial reduction has gained widespread recognition for efficiently remediating environments polluted by toxic metavanadate [V(V)], the pool of identified V(V)-reducing strains remains rather limited, with vast majority belonging to bacteria and fungi. This study is among first confirm V(V) capability Streptomyces microflavus, a representative member ubiquitous actinomycetes in environment. A removal efficiency 91.0 ± 4.35% was achieved during 12 days operation, maximum specific growth rate 0.073 d–1. bioreduced insoluble V(IV) precipitates. took place both intracellularly extracellularly. Electron transfer enhanced bioreduction increased electron transporters. The electron-transfer pathways were revealed through transcriptomic, proteomic, metabolomic analyses. Electrons might flow either respiratory chain reduce intracellular or cytochrome c on outer membrane extracellular reduction. Soluble riboflavin quinone also possibly mediated Glutathione deliver electrons Bioaugmentation aquifer sediment S. microflavus accelerated strain could successfully colonize foster positive correlations indigenous microorganisms. offers new resources bioremediation improve understanding involved molecular mechanisms.

Language: Английский

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Pyrrhotite-dependent microbial reduction and magnetic separation for efficient vanadium detoxification and recovery in contaminated aquifer

Water Research, Journal Year: 2024, Volume and Issue: 251, P. 121143 - 121143

Published: Jan. 15, 2024

Language: Английский

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Deciphering Vanadium Speciation in Smelting Ash and Adaptive Responses of Soil Microorganisms

ACS Nano, Journal Year: 2024, Volume and Issue: 18(3), P. 2464 - 2474

Published: Jan. 10, 2024

Abundant smelting ash is discharged during pyrometallurgical vanadium (V) production. However, its associated V speciation and resultant ecological impact have remained elusive. In this study, in influence on the metabolism of soil microorganisms were investigated. Smelting ashes from smelters contained abundant (19.6-115.9 mg/g). V(V) was dominant species for soluble V, while solid primarily existed bioavailable forms. Previously unrevealed nanoparticles (V-NPs) prevalently detected, with a peak concentration 1.3 × 10

Language: Английский

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Multi-Omics Analysis Reveals Toxicity and Gut-Liver Axis Disruption Induced by Polychlorinated Biphenyls Exposure in Yellowfin Seabream (Acanthopagrus latus)

Journal of Hazardous Materials, Journal Year: 2025, Volume and Issue: 487, P. 137296 - 137296

Published: Jan. 19, 2025

Language: Английский

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Unveiling Soil Microbiome Adaptation and Survival Strategy Under Vanadium Stress in Nationwide Mining Environments

Journal of Geophysical Research Biogeosciences, Journal Year: 2024, Volume and Issue: 129(7)

Published: July 1, 2024

Abstract In the soils of vanadium (V) smelters, a diverse array microorganisms relies on metabolic activities for survival amid stress. However, characteristics and functions soil microbiomes in V mining environments remain unexplored continental scale. This study thoroughly investigates microbial diversity, community assembly, functional potential microbiome across 90 smelters China. Alpha diversity decreases significantly along gradient, with emerging as primary factor influencing structure, followed by other environmental, climatic, geographic factors. The null model reveals that induces homogeneous selection, shaping co‐occurrence patterns leading to increased number positive associations, particularly keystone genera such f_Gemmatimonadaceae , Nocardioides Micromonospora Rubrobacter under higher concentrations (>559.6 mg/kg). Moreover, metagenomic analysis yields 67 metagenome‐assembled genomes, unraveling pathways taxa their likely involvement V(V) reduction process. Nitrate nitrite reductase ( nirK narG ), mtrABC are found be taxonomically affiliated . sp, FEN‐1250 etc. Additionally, reverse citric acid cycle (rTCA) serves carbon fixation pathway, synthesizing alternative energy putative reducers, highlighting potentially synergistic relationship between autotrophic heterotrophic processes supports survival. Our findings comprehensively uncover driving forces behind variation stress, revealing robust strategies possibly employed indigenous mitigate impact V. These insights hold applications bioremediation.

Language: Английский

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Recovery mechanism of heterotrophic ammonia assimilation system under chromium hexavalent stress

Bioresource Technology, Journal Year: 2024, Volume and Issue: 399, P. 130615 - 130615

Published: March 19, 2024

Language: Английский

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Undisclosed contribution of microbial assemblages selectively enriched by microplastics to the sulfur cycle in the large deep-water reservoir

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 471, P. 134342 - 134342

Published: April 19, 2024

Language: Английский

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Vanadium extraction from steel slag: Generation, recycling and management

Environmental Pollution, Journal Year: 2023, Volume and Issue: 343, P. 123126 - 123126

Published: Dec. 11, 2023

Language: Английский

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Research on the decomposition mechanisms of lithium silicate ores with different crystal structures by autotrophic and heterotrophic bacteria

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 925, P. 171762 - 171762

Published: March 18, 2024

Language: Английский

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How halogenated aromatic compounds affect the electron supply and consumption in glucose supported denitrification?

Water Research, Journal Year: 2024, Volume and Issue: 256, P. 121569 - 121569

Published: April 3, 2024

Language: Английский

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