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Liu Y, Gu C, Liu H, Zhou Y, Nie Z, Wang Y, Chen L, Xia J. Fe/S Redox-Coupled Mercury Transformation Mediated by Acidithiobacillus ferrooxidans ATCC 23270 under Aerobic and/or Anaerobic Conditions. Microorganisms 2023; 11:microorganisms11041028. [PMID: 37110452 PMCID: PMC10141921 DOI: 10.3390/microorganisms11041028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Revised: 03/28/2023] [Accepted: 04/08/2023] [Indexed: 04/29/2023] Open
Abstract
Bioleaching processes or microbially mediated iron/sulfur redox processes in acid mine drainage (AMD) result in mineral dissolution and transformation, the release of mercury and other heavy metal ions, and changes in the occurrence forms and concentration of mercury. However, pertinent studies on these processes are scarce. Therefore, in this work, the Fe/S redox-coupled mercury transformation mediated by Acidithiobacillus ferrooxidans ATCC 23270 under aerobic and/or anaerobic conditions was studied by combining analyses of solution behavior (pH, redox potential, and Fe/S/Hg ion concentrations), the surface morphology and elemental composition of the solid substrate residue, the Fe/S/Hg speciation transformation, and bacterial transcriptomics. It was found that: (1) the presence of Hg2+ significantly inhibited the apparent iron/sulfur redox process; (2) the addition of Hg2+ caused a significant change in the composition of bacterial surface compounds and elements such as C, N, S, and Fe; (3) Hg mainly occurred in the form of Hg0, HgS, and HgSO4 in the solid substrate residues; and (4) the expression of mercury-resistant genes was higher in earlier stages of growth than in the later stages of growth. The results indicate that the addition of Hg2+ significantly affected the iron/sulfur redox process mediated by A. ferrooxidans ATCC 23270 under aerobic, anaerobic, and coupled aerobic-anaerobic conditions, which further promoted Hg transformation. This work is of great significance for the treatment and remediation of mercury pollution in heavy metal-polluted areas.
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Affiliation(s)
- Yue Liu
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
| | - Chenyun Gu
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
| | - Hongchang Liu
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
- Key Lab of Biometallurgy of Ministry of Education of China, Central South University, Changsha 410083, China
| | - Yuhang Zhou
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
| | - Zhenyuan Nie
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
- Key Lab of Biometallurgy of Ministry of Education of China, Central South University, Changsha 410083, China
| | - Yirong Wang
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
| | - Lu Chen
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
| | - Jinlan Xia
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
- Key Lab of Biometallurgy of Ministry of Education of China, Central South University, Changsha 410083, China
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de Oliveira EP, Marchi KE, Emiliano J, Salazar SMCH, Ferri AH, Etto RM, Reche PM, Pileggi SAV, Kalks KHM, Tótola MR, Schemczssen-Graeff Z, Pileggi M. Changes in fatty acid composition as a response to glyphosate toxicity in Pseudomonas fluorescens. Heliyon 2022; 8:e09938. [PMID: 35965982 PMCID: PMC9364109 DOI: 10.1016/j.heliyon.2022.e09938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 12/30/2021] [Accepted: 07/07/2022] [Indexed: 11/24/2022] Open
Abstract
Excessive use of herbicides decreases soil biodiversity and fertility. The literature on the xenobiotic response by microorganisms is focused on herbicide biodegradation as a selective event. Non-degradation systems independent of selection could allow the survival of tolerant bacteria in contaminated environments, impacting xenobiotic turnover and, consequently, bioremediation strategies. However, it is uncertain whether the response based on these systems requires selective pressure to be effective. The objective here was to analyze non-degradation phenotypes, enzymatic and structural response systems, of Pseudomonas fluorescens CMA-55 strain, already investigated the production pattern of quorum sensing molecules in response to glyphosate, not present at the isolation site. One mode of response was associated with decrease in membrane permeability and effective antioxidative response for 0–2.30 mM glyphosate, at the mid-log growing phase, with higher activities of Mn-SOD, KatA, and KatB, and presence of fatty acids as nonadecylic acid, margaric and lauric acid. The second response system was characterized by lower antioxidative enzymes activity, presence of KatC isoform, and pelargonic, capric, myristic, stearic, palmitoleic and palmitic acid as principal fatty acids, allowing the strain to face stressful conditions in 9.20–11.50 mM glyphosate at the stationary phase. Therefore, the bacterial strain could modify the fatty acid composition and the permeability of membranes in two response modes according to the herbicide concentration, even glyphosate was not previously selective for P. fluorescens, featuring a generalist system based on physiological plasticity.
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Affiliation(s)
- Elizangela Paz de Oliveira
- Department of Biotechnology, Genetics and Cell Biology, Maringá State University, Maringá, Paraná, Brazil
| | - Kathleen Evelyn Marchi
- Department of Structural and Molecular Biology and Genetics, Ponta Grossa State University, Ponta Grossa, Paraná, Brazil
| | - Janaina Emiliano
- Department of Microbiology, Londrina State University, Londrina, Paraná, Brazil
| | | | - Alisson Henrique Ferri
- Department of Structural and Molecular Biology and Genetics, Ponta Grossa State University, Ponta Grossa, Paraná, Brazil
| | - Rafael Mazer Etto
- Department of Chemistry, Ponta Grossa State University, Ponta Grossa, Paraná, Brazil
| | - Péricles Martim Reche
- Department of Nursing and Public Health, Ponta Grossa State University, Ponta Grossa, Paraná, Brazil
| | - Sônia Alvim Veiga Pileggi
- Department of Structural and Molecular Biology and Genetics, Ponta Grossa State University, Ponta Grossa, Paraná, Brazil
| | | | - Marcos Rogério Tótola
- Department of Microbiology, Federal University of Viçosa, Viçosa, Minas Gerais, Brazil
| | | | - Marcos Pileggi
- Department of Structural and Molecular Biology and Genetics, Ponta Grossa State University, Ponta Grossa, Paraná, Brazil
- Corresponding author.
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Farías R, Norambuena J, Ferrer A, Camejo P, Zapata C, Chávez R, Orellana O, Levicán G. Redox stress response and UV tolerance in the acidophilic iron-oxidizing bacteria Leptospirillum ferriphilum and Acidithiobacillus ferrooxidans. Res Microbiol 2021; 172:103833. [PMID: 33901608 DOI: 10.1016/j.resmic.2021.103833] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 04/08/2021] [Accepted: 04/08/2021] [Indexed: 11/16/2022]
Abstract
The oxidative stress response represents a sum of antioxidative mechanisms that are essential for determining the adaptation and abundance of microorganisms in the environment. Leptospirillum ferriphilum and Acidithiobacillus ferrooxidans are chemolithotrophic bacteria that obtain their energy from the oxidation of ferrous ion. Both microorganisms are important for bioleaching of sulfidic ores and both are tolerant to high levels of heavy metals and other factors that can induce oxidative stress. In this work, we compared the tolerance and response of L. ferriphilum and At. ferrooxidans to Fe3+, H2O2, K2CrO4, and UV-C radiation. We evaluated growth, generation of reactive oxygen species (ROS), oxidative damage to lipid membranes and DNA, and the activity of antioxidative proteins in cells exposed to these stressors. L. ferriphilum had higher cell density, lower ROS content and less lipid and DNA damage than At. ferrooxidans. Consistent with this, the activity levels of thioredoxin and superoxide dismutase in L. ferriphilum were upregulated and higher than in At. ferrooxidans. This indicated that L. ferriphilum has a higher capacity to respond to oxidative stress and to manage redox homeostasis. This capacity could largely contribute to the high abundance of this species in natural and anthropogenic sites.
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Affiliation(s)
- Ricardo Farías
- Departamento de Biología, Facultad de Química y Biología, Universidad de Santiago de Chile (USACH), Av. Libertador Bernardo O´Higgins 3363, Estación Central, Santiago, Chile
| | - Javiera Norambuena
- Departamento de Biología, Facultad de Química y Biología, Universidad de Santiago de Chile (USACH), Av. Libertador Bernardo O´Higgins 3363, Estación Central, Santiago, Chile
| | - Alonso Ferrer
- Núcleo de Química y Bioquímica, Facultad de Estudios Interdisciplinarios, Universidad Mayor, Camino La Pirámide 5750, Huechuraba, Santiago, Chile
| | - Pamela Camejo
- Departamento de Biología, Facultad de Química y Biología, Universidad de Santiago de Chile (USACH), Av. Libertador Bernardo O´Higgins 3363, Estación Central, Santiago, Chile
| | - Claudia Zapata
- Departamento de Biología, Facultad de Química y Biología, Universidad de Santiago de Chile (USACH), Av. Libertador Bernardo O´Higgins 3363, Estación Central, Santiago, Chile
| | - Renato Chávez
- Departamento de Biología, Facultad de Química y Biología, Universidad de Santiago de Chile (USACH), Av. Libertador Bernardo O´Higgins 3363, Estación Central, Santiago, Chile
| | - Omar Orellana
- Programa de Biología Celular y Molecular, Instituto de Ciencias Biomédicas, Facultad de Medicina, Universidad de Chile, Independencia 1027, Santiago, Chile
| | - Gloria Levicán
- Departamento de Biología, Facultad de Química y Biología, Universidad de Santiago de Chile (USACH), Av. Libertador Bernardo O´Higgins 3363, Estación Central, Santiago, Chile.
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Liu X, Liu H, Wu W, Zhang X, Gu T, Zhu M, Tan W. Oxidative Stress Induced by Metal Ions in Bioleaching of LiCoO 2 by an Acidophilic Microbial Consortium. Front Microbiol 2020; 10:3058. [PMID: 32010108 PMCID: PMC6974807 DOI: 10.3389/fmicb.2019.03058] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Accepted: 12/18/2019] [Indexed: 12/13/2022] Open
Abstract
An acidophilic microbial consortium (AMC) was used to investigate the fundamental mechanism behind the adverse effects of pulp density increase in the bioleaching of waste lithium ion batteries (WLIBs). Results showed that there existed the effect of metal-ion stress on the bio-oxidative activity of AMC. The Li+ and Co2+ accumulated in the leachate were the direct cause for the decrease in lithium and cobalt recovery yields under a high pulp density. In a simulated bioleaching system with 4.0% (w ⋅v-1) LiCoO2, the intracellular reactive oxygen species (ROS) content in AMC increased from 0.82 to 6.02 within 24 h, which was almost three times higher than that of the control (2.04). After the supplementation of 0.30 g⋅L-1 of exogenous glutathione (GSH), the bacterial intracellular ROS content decreased by 40% within 24 h and the activities of intracellular ROS scavenging enzymes, including glutathione peroxidase (GSH-Px) and catalase (CAT), were 1.4- and 2.0-folds higher in comparison with the control within 24 h. In the biofilms formed on pyrite in the bioleaching of WLIBs, it was found that metal-ion stress had a great influence on the 3-D structure and the amount of biomass of the biofilms. After the exogenous addition of GSH, the structure and the amount of biomass of the biofilms were restored to some extent. Eventually, through ROS regulation by the exogenous addition of GSH, very high metal recovery yields of 98.1% Li and 96.3% Co were obtained at 5.0% pulp density.
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Affiliation(s)
- Xiaocui Liu
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, China
| | - Hao Liu
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, China
| | - Weijin Wu
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, China
| | - Xu Zhang
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, China
| | - Tingyue Gu
- Department of Chemical and Biomolecular Engineering, Ohio University, Athens, OH, United States
| | - Minglong Zhu
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, China
| | - Wensong Tan
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, China
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S Maluckov B. The Catalytic Role of Acidithiobacillus ferrooxidans for Metals Extraction from Mining - Metallurgical Resource. ACTA ACUST UNITED AC 2017. [DOI: 10.15406/bij.2017.01.00017] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Dyp-Type Peroxidase (DypA) from the Bioleaching Acidophilic Bacterium Leptospirillum ferriphilum DSM 14647. ACTA ACUST UNITED AC 2015. [DOI: 10.4028/www.scientific.net/amr.1130.23] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Leptospirillum
ferriphilum is an acidophilic iron-oxidizing bacterium that is relevant for chemical leaching of sulfide ores. In the extremely acidic conditions found in bioleaching operations, this microorganism deals with an abundant supply of soluble iron and other metals that might induce oxidative damage to biomolecules through the generation of reactive oxygen species (ROS). We evaluated the role of Dyp-type peroxidase in the protection against oxidative stress in L. ferriphilum DSM14647. The genetic region encoding dypA was cloned and sequenced. The predicted DypA enzyme is 295 amino acids long with an estimated molecular mass of 32.9 kDa containing a highly conserved peroxide reduction motif. Genetic complementation of catalases/peroxidases-deficient Escherichia coli cells indicated that expression of dypA from L. ferriphilum restored the resistance to hydrogen proxide to levels exhibited by the wild type strain. Exposure of L. ferriphilum to hydrogen peroxide leads to a significant transcriptional activation of dypA suggesting its involvement in the response to oxidative stress in this bacterium. This is the first Dyp-type peroxidase characterized from an acidophilic microorganism, making it a potential candidate for research in basic and applied biology.
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Felício AP, de Oliveira E, Odena MA, Garcia O, Bertolini MC, Ferraz LFC, Ottoboni LMM, Novo MTM. Differential proteomic analysis of Acidithiobacillus ferrooxidans cells maintained in contact with bornite or chalcopyrite: Proteins involved with the early bacterial response. Process Biochem 2011. [DOI: 10.1016/j.procbio.2010.12.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Redox status affects the catalytic activity of glutamyl-tRNA synthetase. Biochem Biophys Res Commun 2010; 398:51-5. [PMID: 20541532 DOI: 10.1016/j.bbrc.2010.06.031] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2010] [Accepted: 06/07/2010] [Indexed: 12/24/2022]
Abstract
Glutamyl-tRNA synthetases (GluRS) provide Glu-tRNA for different processes including protein synthesis, glutamine transamidation and tetrapyrrole biosynthesis. Many organisms contain multiple GluRSs, but whether these duplications solely broaden tRNA specificity or also play additional roles in tetrapyrrole biosynthesis is not known. Previous studies have shown that GluRS1, one of two GluRSs from the extremophile Acidithiobacillus ferrooxidans, is inactivated when intracellular heme is elevated suggesting a specific role for GluRS1 in the regulation of tetrapyrrole biosynthesis. We now show that, in vitro, GluRS1 activity is reversibly inactivated upon oxidation by hemin and hydrogen peroxide. The targets for oxidation-based inhibition were found to be cysteines from a SWIM zinc-binding motif located in the tRNA acceptor helix-binding domain. tRNA(Glu) was able to protect GluRS1 against oxidative inactivation by hemin plus hydrogen peroxide. The sensitivity to oxidation of A. ferrooxidans GluRS1 might provide a means to regulate tetrapyrrole and protein biosynthesis in response to extreme changes in both the redox and heme status of the cell via a single enzyme.
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