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García-Balboa C, Martínez-Alesón P, López-Rodas V, Costas EC, Díaz MF. An exploratory study on the possibilities of microalgal biotechnology to obtain the essential 6Li isotope as fusion fuel. BIOTECHNOLOGY FOR BIOFUELS AND BIOPRODUCTS 2023; 16:141. [PMID: 37735438 PMCID: PMC10515020 DOI: 10.1186/s13068-023-02394-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Accepted: 09/09/2023] [Indexed: 09/23/2023]
Abstract
Future energy supply needs to overcome two challenges: environmental impact and dependence on geopolitically unstable countries. A very promising alternative is based on lithium, an element for batteries, and whose isotope 6Li will be essential in nuclear fusion. The objective of this research has been to determine if it is possible to achieve isotopic fractionation of lithium through a process mediated by microalgae. For this purpose, Chlamydomonas reinhardtii was selected and grown in presence of 5 mg/L of lithium. Results revealed that this specie survives at the selected lithium concentration, discriminates isotopes and preferentially capture 6Li (6δ = 10.029 ± 3.307) through a process independent of the cellular growth. Concomitate recovered up 0.206 mg/L of lithium along a process of 21 days. The result of this study lets to affirm that Chlamydomonas reinhardtii might be used to obtain lithium enriched in the lighter isotope.
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Affiliation(s)
- Camino García-Balboa
- School of Veterinary Medicine, Complutense University of Madrid, Av. Puerta de Hierro s/n, 28040, Madrid, Spain.
| | - Paloma Martínez-Alesón
- School of Veterinary Medicine, Complutense University of Madrid, Av. Puerta de Hierro s/n, 28040, Madrid, Spain
| | - Victoria López-Rodas
- School of Veterinary Medicine, Complutense University of Madrid, Av. Puerta de Hierro s/n, 28040, Madrid, Spain
| | - Eduardo Costas Costas
- School of Veterinary Medicine, Complutense University of Madrid, Av. Puerta de Hierro s/n, 28040, Madrid, Spain
| | - Marta Fernández Díaz
- Spanish Research Centre for Energy, Environment and Technology (CIEMAT), Av. Complutense 40, 28040, Madrid, Spain
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2
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Mathivanan K, Uthaya Chandirika J, Srinivasan R, Emmanuel Charles P, Rajaram R, Zhang R. Exopolymeric substances production by Bacillus cereus KMS3-1 enhanced its biosorption efficiency in removing Cd 2+ and Pb 2+ in single and binary metal mixtures. ENVIRONMENTAL RESEARCH 2023; 228:115917. [PMID: 37062474 DOI: 10.1016/j.envres.2023.115917] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 04/11/2023] [Accepted: 04/13/2023] [Indexed: 05/16/2023]
Abstract
The present study investigated the growth, exopolymeric substance (EPS) production, and biosorption efficiency of strain Bacillus cereus KMS3-1 in the Cd2+ and Pb2+ ions containing single and binary metal-treated broth (50 mg/L). In addition, the interaction of the KMS3-1 strain with Cd2+ and Pb2+ ions in single and binary metal-treated broths was investigated using SEM-EDS, FTIR, and XRD analyses. The results showed that the biosorption efficiency (%) and EPS production of KMS3-1 biomass in both single and binary metal-treated broths had increased with increasing incubation time and were higher for Pb2+ ions than for Cd2+ ions. In the single and binary metal-treated broths, the maximum biosorption efficiency of KMS3-1 for Pb2+ ions were 70.8% and 46.3%, respectively, while for Cd2+ ions, they were 29.3% and 16.8%, respectively, after 72 h. Moreover, the biosorption efficiency of strain KMS3-1 for both metal ions was dependent on its EPS production and peaked at the maximum EPS production. The copious EPS production by KMS3-1 was observed in metal-treated media (50 mg/L), in the following order: Pb2+ ions (1925.7 μg/mL) > binary metal mixtures (1286.8 μg/mL) > Cd2+ ions (1185.5 μg/mL), > control (1099 μg/mL) after 72 h of incubation. This result indicates that the metal biosorption efficiency of the KMS3-1 strain was enhanced by the increased EPS production in the surrounding metal-treated broth. SEM-EDS and FTIR characterization studies revealed that the KMS3-1 biomass effectively adsorbed Cd2+ and Pb2+ ions from the medium by interacting with their surface functional groups (hydroxyl, carbonyl, carboxyl, amide, and phosphate). Moreover, the biosorbed Cd2+ and Pb2+ ions were transformed into CdS and PbS, respectively, by the KMS3-1 biomass. This study suggests that the Bacillus cereus KMS3-1 strain may be a promising candidate for the treatment of metal contamination.
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Affiliation(s)
| | - Jayaraman Uthaya Chandirika
- Environmental Nanotechnology Division, Sri Paramakalyani Centre of Excellence in Environmental Sciences, Manonmaniam Sundaranar University, Alwarkurichi, Tamil Nadu, 627 412, India
| | - Rajendran Srinivasan
- Department of Fisheries Science, School of Marine Science, Alagappa University, Karaikudi, 630003, Tamil Nadu, India
| | | | - Rajendran Rajaram
- Department of Marine Science, Bharathidasan University, Tiruchirappalli, Tamil Nadu, 620 024, India
| | - Ruiyong Zhang
- Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao, 266071, China.
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3
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Alamier WM, D Y Oteef M, Bakry AM, Hasan N, Ismail KS, Awad FS. Green Synthesis of Silver Nanoparticles Using Acacia ehrenbergiana Plant Cortex Extract for Efficient Removal of Rhodamine B Cationic Dye from Wastewater and the Evaluation of Antimicrobial Activity. ACS OMEGA 2023; 8:18901-18914. [PMID: 37273622 PMCID: PMC10233848 DOI: 10.1021/acsomega.3c01292] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/26/2023] [Accepted: 05/04/2023] [Indexed: 06/06/2023]
Abstract
Silver nanoparticles (Ag-NPs) exhibit vast potential in numerous applications, such as wastewater treatment and catalysis. In this study, we report the green synthesis of Ag-NPs using Acacia ehrenbergiana plant cortex extract to reduce cationic Rhodamine B (RhB) dye and for antibacterial and antifungal applications. The green synthesis of Ag-NPs involves three main phases: activation, growth, and termination. The shape and morphologies of the prepared Ag-NPs were studied through different analytical techniques. The results confirmed the successful preparation of Ag-NPs with a particle size distribution ranging from 1 to 40 nm. The Ag-NPs were used as a heterogeneous catalyst to reduce RhB dye from aqueous solutions in the presence of sodium borohydride (NaBH4). The results showed that 96% of catalytic reduction can be accomplished within 32 min using 20 μL of 0.05% Ag-NPs aqueous suspension in 100 μL of 1 mM RhB solution, 2 mL of deionized water, and 1 mL of 10 mM NaBH4 solution. The results followed a zero-order chemical kinetic (R2 = 0.98) with reaction rate constant k as 0.059 mol L-1 s-1. Furthermore, the Ag-NPs were used as antibacterial and antifungal agents against 16 Gram-positive and Gram-negative bacteria as well as 1 fungus. The green synthesis of Ag-NPs is environmentally friendly and inexpensive, as well as yields highly stabilized nanoparticles by phytochemicals. The substantial results of catalytic reductions and antimicrobial activity reflect the novelty of the prepared Ag-NPs. These nanoparticles entrench the dye and effectively remove the microorganisms from polluted water.
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Affiliation(s)
- Waleed M. Alamier
- Department
of Chemistry, Faculty of Science, Jazan
University, Jazan 45142, Saudi Arabia
| | - Mohammed D Y Oteef
- Department
of Chemistry, Faculty of Science, Jazan
University, Jazan 45142, Saudi Arabia
| | - Ayyob M. Bakry
- Department
of Chemistry, Faculty of Science, Jazan
University, Jazan 45142, Saudi Arabia
| | - Nazim Hasan
- Department
of Chemistry, Faculty of Science, Jazan
University, Jazan 45142, Saudi Arabia
| | - Khatib Sayeed Ismail
- Department
of Biology, Faculty of Science, Jazan University, Jazan 45142, Saudi Arabia
| | - Fathi S. Awad
- Chemistry
Department, Faculty of Science, Mansoura
University, Mansoura 35516, Egypt
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4
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Tenebe IT, Babatunde EO, Neris JB, Mikano C, Ezeudu OB, Edo OC, Fred-Ahmadu OH, Chukwuka CD, Benson NU. Reliability of stored river water as an alternative for consumption in Ekpoma, Nigeria: a human health risk assessment. JOURNAL OF WATER AND HEALTH 2023; 21:571-585. [PMID: 37254906 PMCID: wh_2023_276 DOI: 10.2166/wh.2023.276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
With looming global water-related issues, the monitoring of water quality for household and industrial consumption has become more pertinent. Rivers in nearby towns serve as primary water sources for Ekpoma town. 123 samples of stored river water were collected from 41 sampling locations and physical properties - pH, electrical conductivity (EC), salinity, temperature, and total dissolved solids (TDS) - were measured in situ using the Hanna edge® Multiparameter EC/TDS/Salinity Meter-HI2030. Atomic absorption spectrophotometry (AAS) was used to detect and measure the concentration of potentially toxic metals (PTMs): Al, Cr, Cu, Fe, Mn, Ni, Pb, and Zn. The measured concentrations were compared to the WHO, US EPA, and NSDWQ regulatory standards, and a spatiotemporal health risk analysis was performed using HERisk software. Twenty-five percent of the tested samples contained PTM concentrations within the allowable regulatory limits. Spatiotemporal health risk analysis showed that 98.8% of the cumulative carcinogenic risks (CRcum) were entirely from Pb contamination via oral ingestion. PTM concentrations in the samples suggest the degradation of river water quality due to agricultural activities, crude oil exploration activities, and soil composition in the region. Best management practices (BMPs) and treatment processes for the removal of detected contaminants are recommended to improve water quality.
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Affiliation(s)
- Imokhai T Tenebe
- Mineta Transportation Institute, San Jose State University, San Jose, CA, USA E-mail:
| | - Eunice O Babatunde
- Department of Civil Engineering, Texas State University, San Marcos, TX, USA
| | - Jordan B Neris
- Department of Chemistry, Federal University of São Carlos, São Carlos, São Paulo, Brazil
| | - Cephas Mikano
- Department of Civil Engineering, University of Abuja, Suleja, Nigeria
| | - Obiora B Ezeudu
- UNN-SHELL Centre for Environmental Management and Control, University of Nigeria, Enugu Campus, Nsukka, Nigeria
| | - Onome C Edo
- Department of Information Systems, Auburn University at Montgomery, Montgomery, AL 36117, USA
| | | | - Chibuike D Chukwuka
- Department of Civil Engineering, Covenant University, Ota, Ogun State, Nigeria
| | - Nsikak U Benson
- Institut des Sciences Analytiques, University Claude Bernard Lyon 1, 5 rue de la Doua, Villeurbanne F-69100, France
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Dissanayake DMDC, Kumari WMNH, Chandrasekharan NV, Wijayarathna CD. Isolation of heavy metal-resistant Staphylococcus epidermidis strain TWSL_22 and evaluation of heavy metal bioremediation potential of recombinant E. coli cloned with isolated cadD. FEMS Microbiol Lett 2023; 370:fnad092. [PMID: 37708035 DOI: 10.1093/femsle/fnad092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 06/23/2023] [Accepted: 09/07/2023] [Indexed: 09/16/2023] Open
Abstract
A heavy metal-resistant bacterial strain, TWSL_22 was isolated from an industrial effluent sample and tested for heavy metal tolerance and resistance. The strain was molecularly characterized as Staphylococcus epidermidis based on 16S rDNA gene analysis and the sequence was deposited in the NCBI repository (accession number KT184893.1). Metal removal activity (P < .001) of TWSL_22 was 99.99 ± 0.001%, 74.43 ± 2.51%, and 51.16 ± 4.17% for Cd, Pb, and Cu, respectively. Highest MIC was observed for Cd. Antibiotic susceptibility assays revealed the strain TWSL_22 to be resistant to several antibiotics. The strain was screened for possible heavy metal-resistant genes and presence of cadA, copA, and cadD was confirmed by PCR. A DNA fragment containing complete sequence of cadD (618 bp) was isolated and cloned into pET 21a(+), transformed into E. coli BL21 and designated as E. coli/cadDET. E. coli/cadDET showed high metal tolerance capacity and could remove over 82% of heavy metals (Zn2+, Cd2+, Cu2+, and Cr3+) in the industrial effluent.
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Affiliation(s)
- D M D C Dissanayake
- Biotechnology Laboratory, Department of Chemistry, Faculty of Science, University of Colombo, PO Box 1490, Cumarathunga Munidasa Mawatha, Colombo 00300, Sri Lanka
| | - W M N H Kumari
- Department of Molecular Biology, Durdans Hospitals, No 3 Alfred Road, Colombo 03, Sri Lanka
| | - N V Chandrasekharan
- Sri Lanka Institute of Biotechnology, Thalagala road, Pitipana, Homagama, Sri Lanka
| | - C D Wijayarathna
- Biotechnology Laboratory, Department of Chemistry, Faculty of Science, University of Colombo, PO Box 1490, Cumarathunga Munidasa Mawatha, Colombo 00300, Sri Lanka
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Yaraki MT, Zahed Nasab S, Zare I, Dahri M, Moein Sadeghi M, Koohi M, Tan YN. Biomimetic Metallic Nanostructures for Biomedical Applications, Catalysis, and Beyond. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c00285] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
| | - Shima Zahed Nasab
- Department of Life Science Engineering, Faculty of New Sciences and Technologies, University of Tehran, Tehran 143951561, Iran
| | - Iman Zare
- Research and Development Department, Sina Medical Biochemistry Technologies Co. Ltd., Shiraz 7178795844, Iran
| | - Mohammad Dahri
- Student Research Committee, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz 71345, Iran
| | - Mohammad Moein Sadeghi
- Student Research Committee, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz 71345, Iran
| | - Maedeh Koohi
- Department of Chemistry, Faculty of Science, University of Zanjan, Zanjan 45371-38791, Islamic Republic of Iran
| | - Yen Nee Tan
- Faculty of Science, Agriculture and Engineering, Newcastle University, Newcastle Upon Tyne NE1 7RU, U.K
- Newcastle Research and Innovation Institute, Newcastle University in Singapore, 80 Jurong East Street 21, No. 05-04, 609607, Singapore
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Mathivanan K, Chandirika JU, Vinothkanna A, Yin H, Liu X, Meng D. Bacterial adaptive strategies to cope with metal toxicity in the contaminated environment - A review. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 226:112863. [PMID: 34619478 DOI: 10.1016/j.ecoenv.2021.112863] [Citation(s) in RCA: 56] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 09/27/2021] [Accepted: 09/30/2021] [Indexed: 06/13/2023]
Abstract
Heavy metal contamination poses a serious environmental hazard, globally necessitating intricate attention. Heavy metals can cause deleterious health hazards to humans and other living organisms even at low concentrations. Environmental biotechnologists and eco-toxicologists have rigorously assessed a plethora of bioremediation mechanisms that can hamper the toxic outcomes and the molecular basis for rejuvenating the hazardous impacts, optimistically. Environmental impact assessment and restoration of native and positive scenario has compelled biological management in ensuring safety replenishment in polluted realms often hindered by heavy metal toxicity. Copious treatment modalities have been corroborated to mitigate the detrimental effects to remove heavy metals from polluted sites. In particular, Biological-based treatment methods are of great attention in the metal removal sector due to their high efficiency at low metal concentrations, ecofriendly nature, and cost-effectiveness. Due to rapid multiplication and growth rates, bacteria having metal resistance are advocated for metal removal applications. Evolutionary implications of coping with heavy metals toxicity have redressed bacterial adaptive/resistance strategies related to physiological and cross-protective mechanisms. Ample reviews have been reported for the bacterial adaptive strategies to cope with heavy metal toxicity. Nevertheless, a holistic review summarizing the redox reactions that address the cross-reactivity mechanisms between metallothionein synthesis, extracellular polysaccharides production, siderophore production, and efflux systems of metal resistant bacteria are scarce. Molecular dissection of how bacteria adapt themselves to metal toxicity can augment novel and innovative technologies for efficient detoxification, removal, and combat the restorative difficulties for stress alleviations. The present comprehensive compilation addresses the identification of newer methodologies, summarizing the prevailing strategies of adaptive/resistance mechanisms in bacterial bioremediation. Further pitfalls and respective future directions are enumerated in invigorating effective bioremediation technologies including overexpression studies and delivery systems. The analysis will aid in abridging the gap for limitations in heavy metal removal strategies and necessary cross-talk in elucidating the complex cascade of events in better bioremediation protocols.
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Affiliation(s)
- Krishnamurthy Mathivanan
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, PR China; Key Laboratory of Biometallurgy, Ministry of Education, Central South University, Changsha 410083, PR China
| | - Jayaraman Uthaya Chandirika
- Environmental Nanotechnology Division, Sri Paramakalyani Centre for Environmental Sciences, Manonmaniam Sundaranar University, Alwarkurichi, Tamil Nadu 627412, India
| | - Annadurai Vinothkanna
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, PR China
| | - Huaqun Yin
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, PR China; Key Laboratory of Biometallurgy, Ministry of Education, Central South University, Changsha 410083, PR China; The Hunan International Scientific and Technological Cooperation Base of Environmental Microbiome and Application, Central South University, Changsha 410083, PR China
| | - Xueduan Liu
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, PR China; Key Laboratory of Biometallurgy, Ministry of Education, Central South University, Changsha 410083, PR China
| | - Delong Meng
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, PR China; Key Laboratory of Biometallurgy, Ministry of Education, Central South University, Changsha 410083, PR China; The Hunan International Scientific and Technological Cooperation Base of Environmental Microbiome and Application, Central South University, Changsha 410083, PR China.
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Juárez-Maldonado A, Tortella G, Rubilar O, Fincheira P, Benavides-Mendoza A. Biostimulation and toxicity: The magnitude of the impact of nanomaterials in microorganisms and plants. J Adv Res 2021; 31:113-126. [PMID: 34194836 PMCID: PMC8240115 DOI: 10.1016/j.jare.2020.12.011] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 12/22/2020] [Accepted: 12/26/2020] [Indexed: 01/02/2023] Open
Abstract
Background Biostimulation and toxicity constitute the continuous response spectrum of a biological organism against physicochemical or biological factors. Among the environmental agents capable of inducing biostimulation or toxicity are nanomaterials. On the < 100 nm scale, nanomaterials impose both physical effects resulting from the core’s and corona’s surface properties, and chemical effects related to the core’s composition and the corona’s functional groups. Aim of Review The purpose of this review is to describe the impact of nanomaterials on microorganisms and plants, considering two of the most studied physical and chemical properties: size and concentration. Key Scientific Concepts of Review Using a graphical analysis, the presence of a continuous biostimulation-toxicity spectrum is shown considering different biological responses. In microorganisms, the results showed high susceptibility to nanomaterials. Simultaneously, in plants, a hormetic response was found related to nanomaterials concentration and, in a few cases, a positive response in the smaller nanomaterials when these were applied at a higher level. With the above, it is concluded that: (1) microorganisms are more susceptible to nanomaterials than plants, (2) practically all nanomaterials seem to induce responses from biostimulation to toxicity in plants, and (3) the kind of response observed will depend in a complex way on the nanomateriaĺs physical and chemical characteristics, of the biological species with which they interact, and of the form and route of application and on the nature of the medium -soil, soil pore water, and biological surfaces- where the interaction occurs.
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Affiliation(s)
| | - Gonzalo Tortella
- Centro de Excelencia en Investigación Biotecnológica Aplicada al Medio Ambiente (CIBAMA), Facultad de Ingeniería y Ciencias, Universidad de La Frontera, 4811230 Temuco, Chile
| | - Olga Rubilar
- Centro de Excelencia en Investigación Biotecnológica Aplicada al Medio Ambiente (CIBAMA), Facultad de Ingeniería y Ciencias, Universidad de La Frontera, 4811230 Temuco, Chile
| | - Paola Fincheira
- Centro de Excelencia en Investigación Biotecnológica Aplicada al Medio Ambiente (CIBAMA), Facultad de Ingeniería y Ciencias, Universidad de La Frontera, 4811230 Temuco, Chile
| | - Adalberto Benavides-Mendoza
- Departamento de Horticultura, Universidad Autónoma Agraria Antonio Narro, 25315 Saltillo, Mexico
- Corresponding author.
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Elizabeth George S, Wan Y. Advances in characterizing microbial community change and resistance upon exposure to lead contamination: Implications for ecological risk assessment. CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY 2019; 50:2223-2270. [PMID: 34326626 PMCID: PMC8318135 DOI: 10.1080/10643389.2019.1698260] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Recent advancement in molecular techniques has spurred waves of studies on responses of microorganisms to lead contamination exposure, leveraging detailed phylogenetic analyses and functional gene identification to discern the effects of lead toxicity on microbial communities. This work provides a comprehensive review of recent research on (1) microbial community changes in contaminated aquatic sediments and terrestrial soils; (2) lead resistance mechanisms; and (3) using lead resistance genes for lead biosensor development. Sufficient evidence in the literature, including both in vitro and in situ studies, indicates that exposure to lead contamination inhibits microbial activity resulting in reduced respiration, suppressed metabolism, and reduced biomass as well as altered microbial community structure. Even at sites where microbial communities do not vary compositionally with contamination levels due to extremely long periods of exposure, functional differences between microbial communities are evident, indicating that some microorganisms are susceptible to lead toxicity as others develop resistance mechanisms to survive in lead contaminated environments. The main mechanisms of lead resistance involve extracellular and intracellular biosorption, precipitation, complexation, and/or efflux pumps. These lead resistance mechanisms are associated with suites of genes responsible for specific lead resistance mechanisms and may serving as indicators of lead contamination in association with dominance of certain phyla. This allows for development of several lead biosensors in environmental biotechnology. To promote applications of these advanced understandings, molecular techniques, and lead biosensor technology, perspectives of future work on using microbial indicators for site ecological assessment is presented.
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Affiliation(s)
- S. Elizabeth George
- US EPA Office of Research and Development, National Health and Environmental Effects Laboratory, Gulf Ecology Division, Sabine Island Drive, Gulf Breeze, FL 32561
| | - Yongshan Wan
- US EPA Office of Research and Development, National Health and Environmental Effects Laboratory, Gulf Ecology Division, Sabine Island Drive, Gulf Breeze, FL 32561
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10
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Elsharif AM, Youssef TE, Al-Jameel SS, Mohamed HH, Ansari MA, Rehman S, Akhtar S. Synthesis of an Activatable Tetra-Substituted Nickel Phthalocyanines-4(3H)-quinazolinone Conjugate and Its Antibacterial Activity. Adv Pharmacol Sci 2019; 2019:5964687. [PMID: 31143208 PMCID: PMC6501279 DOI: 10.1155/2019/5964687] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Accepted: 03/19/2019] [Indexed: 12/03/2022] Open
Abstract
The aim of this study was to synthesize a series of nickel(II)phthalocyanines (NiPcs) bearing four 4(3H)-quinazolinone ring system units, (qz)4NiPcs 4a-d. The electronic factors in the 4(3H)-quinazolinone moiety that attached to the NiPc skeleton had a magnificent effect on the antibacterial activity of the newly synthesized (qz)4NiPcs 4a-d against Escherichia coli. The minimum MICs and MBCs value were recorded for compounds 4a, 4b, 4c, and 4d, respectively. The results indicated that the studied (qz)4NiPcs 4a-d units possessed a broad spectrum of activity against Escherichia coli. Their antibacterial activities were found in the order of 4d > 4c > 4b > 4a against Escherichia coli, and the strongest antibacterial activity was achieved with compound 4d.
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Affiliation(s)
- Asma M. Elsharif
- Department of Chemistry, College of Science, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia
| | - Tamer E. Youssef
- Department of Chemistry, College of Science, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia
- Basic and Applied Scientific Research Center, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia
| | - Suhailah S. Al-Jameel
- Department of Chemistry, College of Science, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia
| | - Hanan H. Mohamed
- Department of Chemistry, College of Science, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia
- Basic and Applied Scientific Research Center, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia
| | - Mohammad Azam Ansari
- Department of Epidemic Disease Research, Institute of Research and Medical Consultation (IRMC), Imam Abdulrahman Bin Faisal University, Dammam 31441, Saudi Arabia
| | - Suriya Rehman
- Department of Epidemic Disease Research, Institute of Research and Medical Consultation (IRMC), Imam Abdulrahman Bin Faisal University, Dammam 31441, Saudi Arabia
| | - Sultan Akhtar
- Department of Physics Research, Institute of Research and Medical Consultation (IRMC), Imam Abdulrahman Bin Faisal University, Dammam 31441, Saudi Arabia
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11
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Istiaq A, Shuvo MSR, Rahman KMJ, Siddique MA, Hossain MA, Sultana M. Adaptation of metal and antibiotic resistant traits in novel β-Proteobacterium Achromobacter xylosoxidans BHW-15. PeerJ 2019; 7:e6537. [PMID: 30886770 PMCID: PMC6421061 DOI: 10.7717/peerj.6537] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 01/29/2019] [Indexed: 12/22/2022] Open
Abstract
Chromosomal co-existence of metal and antibiotic resistance genes in bacteria offers a new perspective to the bacterial resistance proliferation in contaminated environment. In this study, an arsenotrophic bacterium Achromobacter xylosoxidans BHW-15, isolated from Arsenic (As) contaminated tubewell water in the Bogra district of Bangladesh, was analyzed using high throughput Ion Torrent Personal Genome Machine (PGM) complete genome sequencing scheme to reveal its adaptive potentiality. The assembled draft genome of A. xylosoxidans BHW-15 was 6.3 Mbp containing 5,782 functional genes, 1,845 pseudo genes, and three incomplete phage signature regions. Comparative genome study suggested the bacterium to be a novel strain of A. xylosoxidans showing significant dissimilarity with other relevant strains in metal resistance gene islands. A total of 35 metal resistance genes along with arsenite-oxidizing aioSXBA, arsenate reducing arsRCDAB, and mercury resistance merRTPADE operonic gene cluster and 20 broad range antibiotic resistance genes including β-lactams, aminoglycosides, and multiple multidrug resistance (MDR) efflux gene complex with a tripartite system OM-IM-MFP were found co-existed within the genome. Genomic synteny analysis with reported arsenotrophic bacteria revealed the characteristic genetic organization of ars and mer operonic genes, rarely described in β-Proteobacteria. A transposon Tn21 and mobile element protein genes were also detected to the end of mer (mercury) operonic genes, possibly a carrier for the gene transposition. In vitro antibiotic susceptibility assay showed a broad range of resistance against antibiotics belonging to β-lactams, aminoglycosides, cephalosporins (1st, 2nd, and 3rd generations), monobactams and even macrolides, some of the resistome determinants were predicted during in silico analysis. KEGG functional orthology analysis revealed the potential of the bacterium to utilize multiple carbon sources including one carbon pool by folate, innate defense mechanism against multiple stress conditions, motility, a proper developed cell signaling and processing unit and secondary metabolism-combination of all exhibiting a robust feature of the cell in multiple stressed conditions. The complete genome of the strain BHW-15 stands as a genetic basis for the evolutionary adaptation of metal and the antibiotic coexistence phenomenon in an aquatic environment.
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Affiliation(s)
- Arif Istiaq
- Department of Microbiology, University of Dhaka, Dhaka, Bangladesh.,Department of Microbiology, Noakhali Science and Technology University, Noakhali, Bangladesh
| | - Md Sadikur Rahman Shuvo
- Department of Microbiology, University of Dhaka, Dhaka, Bangladesh.,Department of Microbiology, Noakhali Science and Technology University, Noakhali, Bangladesh
| | | | | | - M Anwar Hossain
- Department of Microbiology, University of Dhaka, Dhaka, Bangladesh
| | - Munawar Sultana
- Department of Microbiology, University of Dhaka, Dhaka, Bangladesh
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