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Bertrans-Tubau L, Martínez-Campos S, Lopez-Doval J, Abril M, Ponsá S, Salvadó V, Hidalgo M, Pico-Tomàs A, Balcazar JL, Proia L. Nature-based bioreactors: Tackling antibiotic resistance in urban wastewater treatment. ENVIRONMENTAL SCIENCE AND ECOTECHNOLOGY 2024; 22:100445. [PMID: 39055482 PMCID: PMC11269294 DOI: 10.1016/j.ese.2024.100445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 06/24/2024] [Accepted: 06/27/2024] [Indexed: 07/27/2024]
Abstract
The overuse and misuse of antibiotics have accelerated the selection of antibiotic-resistant bacteria, significantly impacting human, animal, and environmental health. As aquatic environments are vulnerable to antibiotic resistance, suitable management practices should be adopted to tackle this phenomenon. Here we show an effective, nature-based solution for reducing antibiotic resistance from actual wastewater. We utilize a bioreactor that relies on benthic (biofilms) and planktonic microbial communities to treat secondary effluent from a small urban wastewater treatment plant (<10,000 population equivalent). This treated effluent is eventually released into the local aquatic ecosystem. We observe high removal efficiency for genes that provide resistance to commonly used antibiotic families, as well as for mobile genetic elements that could potentially aid in their spread. Importantly, we notice a buildup of sulfonamide (sul1 and sul2) and tetracycline (tet(C), tet(G), and tetR) resistance genes specifically in biofilms. This advancement marks the initial step in considering this bioreactor as a nature-based, cost-effective tertiary treatment option for small UWWTPs facing antibiotic resistance challenges.
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Affiliation(s)
- Lluís Bertrans-Tubau
- BETA Technological Centre- University of Vic- Central University of Catalunya (BETA- UVIC- UCC), Carretera de Roda 70, 08500, Vic, Barcelona, Spain
| | - Sergio Martínez-Campos
- BETA Technological Centre- University of Vic- Central University of Catalunya (BETA- UVIC- UCC), Carretera de Roda 70, 08500, Vic, Barcelona, Spain
| | - Julio Lopez-Doval
- BETA Technological Centre- University of Vic- Central University of Catalunya (BETA- UVIC- UCC), Carretera de Roda 70, 08500, Vic, Barcelona, Spain
| | - Meritxell Abril
- BETA Technological Centre- University of Vic- Central University of Catalunya (BETA- UVIC- UCC), Carretera de Roda 70, 08500, Vic, Barcelona, Spain
| | - Sergio Ponsá
- BETA Technological Centre- University of Vic- Central University of Catalunya (BETA- UVIC- UCC), Carretera de Roda 70, 08500, Vic, Barcelona, Spain
| | - Victoria Salvadó
- Chemistry Department, University of Girona. Campus Montilivi, 17005, Girona, Spain
| | - Manuela Hidalgo
- Chemistry Department, University of Girona. Campus Montilivi, 17005, Girona, Spain
| | - Anna Pico-Tomàs
- Catalan Institute Water Research (ICRA-CERCA), Emili Grahit 101, 17003, Girona, Spain
| | - Jose Luis Balcazar
- Catalan Institute Water Research (ICRA-CERCA), Emili Grahit 101, 17003, Girona, Spain
- University of Girona, 17004, Girona, Spain
| | - Lorenzo Proia
- BETA Technological Centre- University of Vic- Central University of Catalunya (BETA- UVIC- UCC), Carretera de Roda 70, 08500, Vic, Barcelona, Spain
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2
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Han NN, Yang JH, Fan NS, Jin RC. Mechanistic insight into microbial interaction and metabolic pattern of anammox consortia on surface-modified biofilm carrier with extracellular polymeric substances. BIORESOURCE TECHNOLOGY 2024; 407:131092. [PMID: 38986879 DOI: 10.1016/j.biortech.2024.131092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2024] [Revised: 06/25/2024] [Accepted: 07/06/2024] [Indexed: 07/12/2024]
Abstract
The extremely slow growth rate of anaerobic ammonia oxidation (anammox) bacteria limits full-scale application of anammox process worldwide. In this study, extracellular polymeric substances (EPS)-coated polypropylene (PP) carriers were prepared for biofilm formation. The biomass adhesion rate of EPS-PP carrier was 12 times that of PP carrier, and EPS-PP achieved significant enrichment of E. coli BY63. The 120-day continuous flow experiment showed that the EPS-PP carrier accelerated the formation of anammox biofilm, and the nitrogen removal efficiency increased by 10.5 %. In addition, the abundance of Candidatus Kuenenia in EPS-PP biofilm was 27.1%. Simultaneously, amino acids with high synthesis cost and the metabolites of glycerophospholipids related to biofilm formation on EPS-PP biofilm were significantly up-regulated. Therefore, EPS-PP carriers facilitated the rapid formation of anammox biofilm and promoted the metabolic activity of functional bacteria, which further contributed to the environmental and economic sustainability of anammox process.
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Affiliation(s)
- Na-Na Han
- Laboratory of Water Pollution Remediation, School of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Jia-Hui Yang
- Laboratory of Water Pollution Remediation, School of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Nian-Si Fan
- School of Engineering, Hangzhou Normal University, Hangzhou 311121, China.
| | - Ren-Cun Jin
- School of Engineering, Hangzhou Normal University, Hangzhou 311121, China
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3
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Savadiya B, Pandey G, Misra SK. Remediation of pharmacophoric laboratory waste by using biodegradable carbon nanoparticles of bacterial biofilm origin. ENVIRONMENTAL RESEARCH 2024; 252:118969. [PMID: 38642641 DOI: 10.1016/j.envres.2024.118969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Revised: 04/09/2024] [Accepted: 04/18/2024] [Indexed: 04/22/2024]
Abstract
Research laboratories generate a broad range of hazardous pharmacophoric chemical contaminants, from drugs to dyes used during various experimental procedures. In the recent past, biological methods have demonstrated great potential in the remediation of such contaminants. However, the presence of pharmacophoric chemicals containing antibiotics, xenobiotics, and heavy metals suppresses the growth and survivability of used microbial agents, thus decreasing the overall efficiency of biological remediation processes. Bacterial biofilm is a natural arrangement to counter some of these inhibitions but its use in a systemic manner, portable devices, and pollutant remediation plants post serious challenges. This could be countered by synthesizing a biodegradable carbon nanoparticle from bacterial biofilm. In this study, extracellular polymeric substance-based carbon nanoparticles (Bio-EPS-CNPs) were synthesized from bacterial biofilm derived from Bacillus subtilis NCIB 3610, as a model bacterial system. The produced Bio-EPS-CNPs were investigated for physiochemical properties by dynamic light scattering, optical, Fourier-transformed infrared, and Raman spectroscopy techniques, whereas X-ray diffraction study, scanning electron microscopy, and transmission electron microscopy were used to investigate structural and morphological features. The Bio-EPS-CNPs exhibited negative surface charge with spherical morphology having a uniform size of sub-100 nm. The maximum remediation of some laboratory-produced pharmacophoric chemicals was achieved through a five-round scavenging process and confirmed by UV/Vis spectroscopic analysis with respect to the used pharmacophore. This bioinspired remediation of used pharmacophoric chemicals was achieved through the mechanism of surface adsorption via hydrogen bonding and electrostatic interactions, as revealed by different characterizations. Further experiments were performed to investigate the effects of pH, temperature, stirring, and the protocol of scavenging to establish Bio-EPS-CNP as a possible alternative to be used in research laboratories for efficient removal of pharmacophoric chemicals by incorporating it in a portable, filter-based device.
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Affiliation(s)
- Bhawana Savadiya
- Department of Biological Sciences & Bioengineering, Indian Institute of Technology Kanpur, Kalyanpur, UP, 208016, India
| | - Gaurav Pandey
- Department of Biological Sciences & Bioengineering, Indian Institute of Technology Kanpur, Kalyanpur, UP, 208016, India
| | - Santosh K Misra
- Department of Biological Sciences & Bioengineering, Indian Institute of Technology Kanpur, Kalyanpur, UP, 208016, India; The Mehta Family Center for Engineering in Medicine, Indian Institute of Technology Kanpur, Kalyanpur, UP, 208016, India.
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4
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Singh R, Gulliver JS. Understanding the role of biofilms and estimation of life-span of a tire derived aggregates-based underground stormwater treatment system. WATER RESEARCH 2024; 257:121716. [PMID: 38759611 DOI: 10.1016/j.watres.2024.121716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2023] [Revised: 04/12/2024] [Accepted: 05/02/2024] [Indexed: 05/19/2024]
Abstract
The importance of biofilm in tire derived aggregates (TDA) based underground systems has been investigated in this paper, to assess the utilization of tire waste as a cost-effective and sustainable resource for stormwater treatment. The primary objective of this study is to look into the role of biofilms in preventing metal leaching from a TDA based stormwater treatment system and to estimate the life span of a TDA based stormwater treatment system. TDA subjected to different influents to promote or limit the growth of biofilms were analyzed for their leaching and adsorption potential for fifteen different metals through 72 flushes, which is representative of roughly 9 years of TDA exposure to storm events in the upper Midwest USA. Biofilm growth on a manufacturing byproduct (wire exposed-TDA) was higher than on the traditional TDA. The presence of biofilm on TDA had a minor impact on orthophosphate adsorption as observed in a previous study conducted by the authors. However, metals such as iron, zinc and copper, which were previously a concern, had substantially lower leaching into the stored runoff. In addition, the orthophosphate removal from runoff by TDA with a biofilm through 72 flushes indicates that TDA based underground systems can have orthophosphate removal life span beyond 8-9 years. Thus, TDA with biofilms in an underground storage/infiltration chamber has the potential to establish itself as a sustainable, cost-effective, and long life-span alternative for stormwater remediation of orthophosphate pollution without leaching of metals.
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Affiliation(s)
- Rajneesh Singh
- St. Anthony Falls Laboratory, University of Minnesota, Minneapolis, MN, USA; Department of Hydrology, Indian Institute of Technology Roorkee, Uttarakhand, India.
| | - John S Gulliver
- St. Anthony Falls Laboratory, University of Minnesota, Minneapolis, MN, USA; Department of Civil, Environmental and Geo- Engineering, University of Minnesota, Minneapolis, MN, USA.
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5
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da Cruz Nizer WS, Adams ME, Allison KN, Montgomery MC, Mosher H, Cassol E, Overhage J. Oxidative stress responses in biofilms. Biofilm 2024; 7:100203. [PMID: 38827632 PMCID: PMC11139773 DOI: 10.1016/j.bioflm.2024.100203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Revised: 05/22/2024] [Accepted: 05/22/2024] [Indexed: 06/04/2024] Open
Abstract
Oxidizing agents are low-molecular-weight molecules that oxidize other substances by accepting electrons from them. They include reactive oxygen species (ROS), such as superoxide anions (O2-), hydrogen peroxide (H2O2), and hydroxyl radicals (HO-), and reactive chlorine species (RCS) including sodium hypochlorite (NaOCl) and its active ingredient hypochlorous acid (HOCl), and chloramines. Bacteria encounter oxidizing agents in many different environments and from diverse sources. Among them, they can be produced endogenously by aerobic respiration or exogenously by the use of disinfectants and cleaning agents, as well as by the mammalian immune system. Furthermore, human activities like industrial effluent pollution, agricultural runoff, and environmental activities like volcanic eruptions and photosynthesis are also sources of oxidants. Despite their antimicrobial effects, bacteria have developed many mechanisms to resist the damage caused by these toxic molecules. Previous research has demonstrated that growing as a biofilm particularly enhances bacterial survival against oxidizing agents. This review aims to summarize the current knowledge on the resistance mechanisms employed by bacterial biofilms against ROS and RCS, focussing on the most important mechanisms, including the formation of biofilms in response to oxidative stressors, the biofilm matrix as a protective barrier, the importance of detoxifying enzymes, and increased protection within multi-species biofilm communities. Understanding the complexity of bacterial responses against oxidative stress will provide valuable insights for potential therapeutic interventions and biofilm control strategies in diverse bacterial species.
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Affiliation(s)
| | - Madison Elisabeth Adams
- Department of Health Sciences, Carleton University, 1125 Colonel By Drive, Ottawa, K1S 5B6, ON, Canada
| | - Kira Noelle Allison
- Department of Health Sciences, Carleton University, 1125 Colonel By Drive, Ottawa, K1S 5B6, ON, Canada
| | | | - Hailey Mosher
- Department of Health Sciences, Carleton University, 1125 Colonel By Drive, Ottawa, K1S 5B6, ON, Canada
| | - Edana Cassol
- Department of Health Sciences, Carleton University, 1125 Colonel By Drive, Ottawa, K1S 5B6, ON, Canada
| | - Joerg Overhage
- Department of Health Sciences, Carleton University, 1125 Colonel By Drive, Ottawa, K1S 5B6, ON, Canada
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6
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Vishwakarma A, Verma D. Smokeless Tobacco Harbors Bacteria Involved in Biofilm Formation as Well as Salt and Heavy Metal Tolerance Activity. Appl Biochem Biotechnol 2024; 196:3034-3055. [PMID: 37610514 DOI: 10.1007/s12010-023-04689-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/16/2023] [Indexed: 08/24/2023]
Abstract
In our previous culture-independent study on smokeless tobacco products, we have observed a strong positive correlation between several bacteria and genes involved in nitrate/nitrite reduction, biofilm formation, and pro-inflammation. Therefore, the present investigation was carried out to analyze the inhabitant bacterial population of the Indian ST products for assessing the health-associated risk attributes using culture-dependent approach. Traditional cultivation approaches recovered several bacterial isolates from commercial ST products on different culture media. A high colony formation unit (CFU) count was observed that ranged from 173 × 104 to 630.4 × 105 per gram of ST products. Of the 74 randomly selected and distinct bacterial isolates, 17 isolates showed a significantly enhanced growth (p-value < 0.05) in the presence of the aqueous tobacco extract. On biochemical characterization, these bacteria were identified as the member of Bacillus, Enterobacter, Micrococcus, Providencia, Serratia, Pantoea, Proteus, and Pseudomonas. Most of these bacteria also exhibited biofilm-forming activity, where eight bacterial isolates were identified for strong biofilm-forming action. 16S rRNA-based molecular characterization of these bacteria identified them as Bacillus subtilis, Bacillus paralicheniformis, Enterobacter sp., Serratia marcescens, Pantoea anthophila, and Enterobacter cloacae. Moreover, these bacteria also exhibited the potential to withstand high salt and heavy metal concentrations. The findings demonstrate that Indian ST products are heavily populated with wide bacterial species exhibiting potential in biofilm formation, heavy metal resistance, and salt tolerance.
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Affiliation(s)
- Akanksha Vishwakarma
- Department of Environmental Microbiology, School of Earth and Environmental Sciences, Babasaheb Bhimrao Ambedkar University, Lucknow, 226025, India
| | - Digvijay Verma
- Department of Environmental Microbiology, School of Earth and Environmental Sciences, Babasaheb Bhimrao Ambedkar University, Lucknow, 226025, India.
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7
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Arora J, Chauhan A, Ranjan A, Rajput VD, Minkina T, Zhumbei AI, Kumari A, Jindal T, Prasad R. Degradation of SDS by psychrotolerant Staphylococcus saprophyticus and Bacillus pumilus isolated from Southern Ocean water samples. Braz J Microbiol 2024; 55:1507-1519. [PMID: 38468117 PMCID: PMC11153461 DOI: 10.1007/s42770-024-01294-1] [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: 10/28/2023] [Accepted: 02/26/2024] [Indexed: 03/13/2024] Open
Abstract
Bioremediation of surfactants in water bodies holds significant ecological importance as they are contaminants of emerging concern posing substantial threats to the aquatic environment. Microbes exhibiting special ability in terms of bioremediation of contaminants have always been reported to thrive in extraordinary environmental conditions that can be extreme in terms of temperature, lack of nutrients, and salinity. Therefore, in the present investigation, a total of 46 bacterial isolates were isolated from the Indian sector of the Southern Ocean and screened for degradation of sodium dodecyl sulphate (SDS). Further, two Gram-positive psychrotolerant bacterial strains, ASOI-01 and ASOI-02 were identified with significant SDS degradation potential. These isolates were further studied for growth optimization under different environmental conditions. The strains were characterized as Staphylococcus saprophyticus and Bacillus pumilus based on morphological, biochemical, and molecular (16S RNA gene) characteristics. The study reports 88.9% and 93.4% degradation of SDS at a concentration of 100 mgL-1, at 20 °C, and pH 7 by S. saprophyticus ASOI-01 and B. pumilus ASOI-02, respectively. The experiments were also conducted in wastewater samples where a slight reduction in degradation efficiency was observed with strains ASOI-01 and ASOI-02 exhibiting 76.83 and 64.93% degradation of SDS respectively. This study infers that these bacteria can be used for the bioremediation of anionic surfactants from water bodies and establishes the potential of extremophilic microbes for the utilization of sustainable wastewater management.
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Affiliation(s)
- Jayati Arora
- Amity Institute of Environmental Science, Amity University, Noida, Uttar Pradesh, India
| | - Abhishek Chauhan
- Amity Institute of Environmental Toxicology, Safety and Management, Amity University, Noida, Uttar Pradesh, India
| | - Anuj Ranjan
- Amity Institute of Environmental Toxicology, Safety and Management, Amity University, Noida, Uttar Pradesh, India.
- Academy of Biology and Biotechnology, Southern Federal University, Stachki 194/1, Rostov-On-Don, Russia.
| | - Vishnu D Rajput
- Academy of Biology and Biotechnology, Southern Federal University, Stachki 194/1, Rostov-On-Don, Russia
| | - Tatiana Minkina
- Academy of Biology and Biotechnology, Southern Federal University, Stachki 194/1, Rostov-On-Don, Russia
| | - Anton Igorevich Zhumbei
- Academy of Biology and Biotechnology, Southern Federal University, Stachki 194/1, Rostov-On-Don, Russia
| | - Arpna Kumari
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Yayoi, Bunkyo-Ku, Tokyo, Japan
| | - Tanu Jindal
- Amity Institute of Environmental Toxicology, Safety and Management, Amity University, Noida, Uttar Pradesh, India
| | - Ram Prasad
- Department of Botany, Mahatma Gandhi Central University, Motihari, 845401, Bihar, India.
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8
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Lazzem A, Lekired A, Ouzari HI, Landoulsi A, Chatti A, El May A. Isolation and characterization of a newly chrysene-degrading Achromobacter aegrifaciens. Int Microbiol 2024; 27:857-869. [PMID: 37851202 DOI: 10.1007/s10123-023-00435-0] [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: 04/18/2023] [Revised: 09/21/2023] [Accepted: 09/28/2023] [Indexed: 10/19/2023]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) are considered substances of potential human health hazards because of their resistance to biodegradation and carcinogenic index. Chrysene is a PAH with a high molecular weight (HMW) that poses challenges for its elimination from the environment. However, bacterial degradation is an effective, environmentally friendly, and cost-effective solution. In our study, we isolated a potential chrysene-degrading bacteria from crude oil-contaminated seawater (Bizerte, Tunisia). Based on 16SrRNA analysis, the isolate S5 was identified as Achromobacter aegrifaciens. Furthermore, the results revealed that A. aegrifaciens S5 produced a biofilm on polystyrene at 20 °C and 30 °C, as well as at the air-liquid (A-L) interface. Moreover, this isolate was able to swim and produce biosurfactants with an emulsification activity (E24%) over 53%. Chrysene biodegradation by isolate S5 was clearly assessed by an increase in the total viable count. Confirmation was obtained via gas chromatography-mass spectrometry (GC-MS) analyses. A. aegrifaciens S5 could use chrysene as its sole carbon and energy source, exhibiting an 86% degradation of chrysene on day 7. In addition, the bacterial counts reached their highest level, over 25 × 1020 CFU/mL, under the conditions of pH 7.0, a temperature of 30 °C, and a rotary speed of 120 rpm. Based on our findings, A. aegrifaciens S5 can be a potential candidate for bioremediation in HMW-PAH-contaminated environments.
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Affiliation(s)
- Assia Lazzem
- Laboratory of Risks Related to Environmental Stresses: Fight and Prevention, Faculty of Sciences of Bizerte, University of Carthage, 7021, Jarzouna, Tunisia.
| | - Abdelmalek Lekired
- Laboratory of Microorganisms and Actives Biomolecules, Faculty of Sciences of Tunis, University Tunis El Manar, 2092, Tunis, Tunisia
| | - Hadda-Imene Ouzari
- Laboratory of Microorganisms and Actives Biomolecules, Faculty of Sciences of Tunis, University Tunis El Manar, 2092, Tunis, Tunisia
| | - Ahmed Landoulsi
- Laboratory of Risks Related to Environmental Stresses: Fight and Prevention, Faculty of Sciences of Bizerte, University of Carthage, 7021, Jarzouna, Tunisia
| | - Abdelwaheb Chatti
- Laboratory of Risks Related to Environmental Stresses: Fight and Prevention, Faculty of Sciences of Bizerte, University of Carthage, 7021, Jarzouna, Tunisia
| | - Alya El May
- Laboratory of Risks Related to Environmental Stresses: Fight and Prevention, Faculty of Sciences of Bizerte, University of Carthage, 7021, Jarzouna, Tunisia
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9
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Philipp LA, Bühler K, Ulber R, Gescher J. Beneficial applications of biofilms. Nat Rev Microbiol 2024; 22:276-290. [PMID: 37957398 DOI: 10.1038/s41579-023-00985-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/05/2023] [Indexed: 11/15/2023]
Abstract
Many microorganisms live in the form of a biofilm. Although they are feared in the medical sector, biofilms that are composed of non-pathogenic organisms can be highly beneficial in many applications, including the production of bulk and fine chemicals. Biofilm systems are natural retentostats in which the biocatalysts can adapt and optimize their metabolism to different conditions over time. The adherent nature of biofilms allows them to be used in continuous systems in which the hydraulic retention time is much shorter than the doubling time of the biocatalysts. Moreover, the resilience of organisms growing in biofilms, together with the potential of uncoupling growth from catalytic activity, offers a wide range of opportunities. The ability to work with continuous systems using a potentially self-advancing whole-cell biocatalyst is attracting interest from a range of disciplines, from applied microbiology to materials science and from bioengineering to process engineering. The field of beneficial biofilms is rapidly evolving, with an increasing number of applications being explored, and the surge in demand for sustainable and biobased solutions and processes is accelerating advances in the field. This Review provides an overview of the research topics, challenges, applications and future directions in beneficial and applied biofilm research.
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Affiliation(s)
- Laura-Alina Philipp
- Hamburg University of Technology, Institute of Technical Microbiology, Hamburg, Germany
| | - Katja Bühler
- Department of Environmental Microbiology, Helmholtz-Centre for Environmental Research, Leipzig, Germany
| | - Roland Ulber
- RPTU Kaiserslautern-Landau, Institute of Bioprocess Engineering, Kaiserslautern, Germany
| | - Johannes Gescher
- Hamburg University of Technology, Institute of Technical Microbiology, Hamburg, Germany.
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10
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Samadi A, Kermanshahi Pour A, Beims RF, Xu CC. Delignified porous wood as biofilm support for 1,4-dioxane-degrading bacterial consortium. ENVIRONMENTAL TECHNOLOGY 2024; 45:2541-2557. [PMID: 36749305 DOI: 10.1080/09593330.2023.2178330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Accepted: 02/03/2023] [Indexed: 06/18/2023]
Abstract
Delignified porous wood samples were used as carriers for biofilm formation of a bacterial consortium with the ability to degrade 1,4-dioxane (DX). The delignification treatment of the natural wood resulted in higher porosity, formation of macropores, increase in surface roughness and hydrophilicity of the treated wood pieces. These superior properties of two types of treated carriers (respectively, A and B) compared to the untreated wood resulted in 2.19 ± 0.52- and 2.66 ± 0.23-fold higher growth of biofilm. Moreover, analysis of the fatty acid profiles indicated an increase in proportion of the saturated fatty acids during the biofilm formation, characterising an enhancement in rigidity and hydrophobicity of the biofilms. DX initial concentration of 100 mg/L was completely degraded (detection limit 0.01 mg/L) in 24 and 32 h using the treated A and B woods, while only 25.84 ± 5.95% was removed after 32 h using the untreated wood. However, fitting the DX biodegradation data to the Monod model showed a lower maximum specific growth rate for biofilm (0.0276 ± 0.0018 1/h) versus planktonic (0.0382 ± 0.0024 1/h), because of gradual accumulation of inactive cells in the biofilm. Findings of this study can contribute to the knowledge of biofilm formation regarding the physical/chemical properties of biofilm carriers and be helpful to the ongoing research on bioremediation of DX.
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Affiliation(s)
- Aryan Samadi
- Biorefining and Remediation Laboratory, Department of Process Engineering and Applied Science, Dalhousie University, Halifax, Canada
| | - Azadeh Kermanshahi Pour
- Biorefining and Remediation Laboratory, Department of Process Engineering and Applied Science, Dalhousie University, Halifax, Canada
| | - Ramon Filipe Beims
- Department of Biochemical and Chemical Engineering, University of Western Ontario, London, Canada
| | - Chunbao Charles Xu
- Department of Biochemical and Chemical Engineering, University of Western Ontario, London, Canada
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11
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Huang Y, Hu H, Zhang T, Wang W, Liu W, Tang H. Meta-omics assisted microbial gene and strain resources mining in contaminant environment. Eng Life Sci 2024; 24:2300207. [PMID: 38708415 PMCID: PMC11065330 DOI: 10.1002/elsc.202300207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 07/11/2023] [Accepted: 07/11/2023] [Indexed: 05/07/2024] Open
Abstract
Human activities have led to the release of various environmental pollutants, triggering ecological challenges. In situ, microbial communities in these contaminated environments are usually assumed to possess the potential capacity of pollutant degradation. However, the majority of genes and microorganisms in these environments remain uncharacterized and uncultured. The advent of meta-omics provided culture-independent solutions for exploring the functional genes and microorganisms within complex microbial communities. In this review, we highlight the applications and methodologies of meta-omics in uncovering of genes and microbes from contaminated environments. These findings may assist in future bioremediation research.
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Affiliation(s)
- Yiqun Huang
- State Key Laboratory of Microbial Metabolismand School of Life Sciences & BiotechnologyShanghai Jiao Tong UniversityShanghaiPeople's Republic of China
| | - Haiyang Hu
- State Key Laboratory of Microbial Metabolismand School of Life Sciences & BiotechnologyShanghai Jiao Tong UniversityShanghaiPeople's Republic of China
| | - Tingting Zhang
- China Tobacco Henan Industrial Co. Ltd.ZhengzhouPeople's Republic of China
| | - Weiwei Wang
- State Key Laboratory of Microbial Metabolismand School of Life Sciences & BiotechnologyShanghai Jiao Tong UniversityShanghaiPeople's Republic of China
| | - Wenzhao Liu
- China Tobacco Henan Industrial Co. Ltd.ZhengzhouPeople's Republic of China
| | - Hongzhi Tang
- State Key Laboratory of Microbial Metabolismand School of Life Sciences & BiotechnologyShanghai Jiao Tong UniversityShanghaiPeople's Republic of China
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12
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Vishwakarma SK, Patil A, Pandey A, Arya M. Biosorption of Heavy Metal (Mn 2+) by Thermophilic Bacterial Strains Isolated from Surya Kund Hot Spring, Yamunotri, Uttarakhand. Appl Biochem Biotechnol 2024; 196:2518-2533. [PMID: 37659051 DOI: 10.1007/s12010-023-04682-9] [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] [Accepted: 08/16/2023] [Indexed: 09/05/2023]
Abstract
This investigation aimed to identify the bioremediation potential of Mn2+-resistant bacterial strains cultured from the Surya Kund hot spring, Yamunotri, Uttarakhand. In this study, eight heavy metal-resistant isolates belonging to two phyla, i.e., Firmicutes and Proteobacteria, were investigated for their Mn2+ biosorption potential. The metal tolerance potential of all the thermophilic bacterial strains was determined by MIC. Bioremediation assay of these metal-resistant strains was performed for Mn2+ through the live and dead biomass of the bacterial cell. The evaluation of the bioremediation rate of metal ions through bacteria was done by AAS. All the selected bacterial strains were evaluated with effective biosorption rates for Mn2+. Acinetobacter sp. LSN-10 (YII-1) has been showing the highest potential for the removal of Mn2+ in both live (41.202%) and dead biomass (64.721%) conditions. The bioremediation rate of dead biomass was observed quite higher in comparison to bioremediation through live bacterial cells in the maximum number of isolates. This study may provide a new eco-friendly and cost-effective approach to dealing with metal toxicity. However, further investigation is needed to identify the most effective applications and potential limitations of this method.
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Affiliation(s)
- Shailesh K Vishwakarma
- Department of Biotechnology, Hemvati Nandan Bahuguna Garhwal University, Srinagar, Uttarakhand, 246174, India
| | - Anjali Patil
- Department of Biotechnology, Hemvati Nandan Bahuguna Garhwal University, Srinagar, Uttarakhand, 246174, India
| | - Anita Pandey
- Department of Biotechnology, Graphic Era (Deemed to be) University, Dehradun, Uttarakhand, 248002, India
| | - Mamta Arya
- Department of Biotechnology, Hemvati Nandan Bahuguna Garhwal University, Srinagar, Uttarakhand, 246174, India.
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13
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Agrawal K, Ruhil T, Gupta VK, Verma P. Microbial assisted multifaceted amelioration processes of heavy-metal remediation: a clean perspective toward sustainable and greener future. Crit Rev Biotechnol 2024; 44:429-447. [PMID: 36851851 DOI: 10.1080/07388551.2023.2170862] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 12/18/2022] [Accepted: 01/03/2023] [Indexed: 03/01/2023]
Abstract
Rapidly increasing heavy metal waste has adversely affected the environment and the Earth's health. The lack of appropriate remediation technologies has worsened the issue globally, especially in developing countries. Heavy-metals contaminants have severely impacted the environment and led to devastating conditions owing to their abundance and reactivity. As they are nondegradable, the potential risk increases even at a low concentration. However, heavy-metal remediation has increased with the up-gradation of technologies and integration of new approaches. Also, of all the treatment methodologies, microbial-assisted multifaceted approach for ameliorating heavy metals is a promising strategy for propagating the idea of a green and sustainable environment with minimal waste aggregation. Microbial remediation combined with different biotechniques could aid in unraveling new methods for eradicating heavy metals. Thus, the present review focuses on various microbial remediation approaches and their affecting factors, enabling recapitulation of the interplay between heavy-metals ions and microorganisms. Additionally, heavy-metals remediation mechanisms adapted by microorganisms, the role of genetically modified (GM) microorganisms, life cycle assessment (LCA), techno-economic assessment (TEA) limitations, and prospects of microbial-assisted amelioration of heavy-metals have been elaborated in the current review with focus toward "sustainable and greener future."
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Affiliation(s)
- Komal Agrawal
- Bioprocess and Bioenergy Laboratory, Department of Microbiology, Central University of Rajasthan, Ajmer, India
- Department of Microbiology, School of Bio Engineering and Biosciences, Lovely Professional University, Phagwara, India
| | - Tannu Ruhil
- Bioprocess and Bioenergy Laboratory, Department of Microbiology, Central University of Rajasthan, Ajmer, India
| | - Vijai Kumar Gupta
- Center for Safe and Improved Food, SRUC, Edinburgh, UK
- Biorefining and Advanced Materials Research Center, SRUC, Edinburgh, UK
| | - Pradeep Verma
- Bioprocess and Bioenergy Laboratory, Department of Microbiology, Central University of Rajasthan, Ajmer, India
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14
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Parmar D, Rosado-Rosa JM, Shrout JD, Sweedler JV. Metabolic insights from mass spectrometry imaging of biofilms: A perspective from model microorganisms. Methods 2024; 224:21-34. [PMID: 38295894 PMCID: PMC11149699 DOI: 10.1016/j.ymeth.2024.01.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 12/17/2023] [Accepted: 01/16/2024] [Indexed: 02/05/2024] Open
Abstract
Biofilms are dense aggregates of bacterial colonies embedded inside a self-produced polymeric matrix. Biofilms have received increasing attention in medical, industrial, and environmental settings due to their enhanced survival. Their characterization using microscopy techniques has revealed the presence of structural and cellular heterogeneity in many bacterial systems. However, these techniques provide limited chemical detail and lack information about the molecules important for bacterial communication and virulence. Mass spectrometry imaging (MSI) bridges the gap by generating spatial chemical information with unmatched chemical detail, making it an irreplaceable analytical platform in the multi-modal imaging of biofilms. In the last two decades, over 30 species of biofilm-forming bacteria have been studied using MSI in different environments. The literature conveys both analytical advancements and an improved understanding of the effects of environmental variables such as host surface characteristics, antibiotics, and other species of microorganisms on biofilms. This review summarizes the insights from frequently studied model microorganisms. We share a detailed list of organism-wide metabolites, commonly observed mass spectral adducts, culture conditions, strains of bacteria, substrate, broad problem definition, and details of the MS instrumentation, such as ionization sources and matrix, to facilitate future studies. We also compared the spatial characteristics of the secretome under different study designs to highlight changes because of various environmental influences. In addition, we highlight the current limitations of MSI in relation to biofilm characterization to enable cross-comparison between experiments. Overall, MSI has emerged to become an important approach for the spatial/chemical characterization of bacterial biofilms and its use will continue to grow as MSI becomes more accessible.
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Affiliation(s)
- Dharmeshkumar Parmar
- Department of Chemistry and Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States
| | - Joenisse M Rosado-Rosa
- Department of Chemistry and Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States
| | - Joshua D Shrout
- Department of Civil and Environmental Engineering and Earth Sciences, University of Notre Dame, Notre Dame, IN 46556, United States; Department of Biological Sciences, University of Notre Dame, Notre Dame, IN 46556, United States
| | - Jonathan V Sweedler
- Department of Chemistry and Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States.
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15
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Bodean MF, Regaldo L, Mayora G, Mora C, Giri F, Gervasio S, Popielarz A, Repetti MR, Licursi M. Effects of herbicides and fertilization on biofilms of Pampean lotic systems: A microcosm study. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 917:170238. [PMID: 38280601 DOI: 10.1016/j.scitotenv.2024.170238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 12/02/2023] [Accepted: 01/15/2024] [Indexed: 01/29/2024]
Abstract
We experimentally assessed the impact of the application of herbicides and fertilizers derived from agricultural activity through the individual and simultaneous addition of glyphosate, atrazine, and nutrients (nitrogen 'N' and phosphorus 'P') on the biofilm community and their resilience when the experimental factors were removed. We hypothesize that i) the presence of agrochemicals negatively affects the biofilm community leading to the simplification of the community structure; ii) the individual or simultaneous addition of herbicides and nutrients produces differential responses in the biofilm; and iii) the degree of biofilm recovery differs according to the treatment applied. Environmentally relevant concentrations of glyphosate (0.7 mgL-1), atrazine (44 μgL-1), phosphorus (1 mg P L-1 [KH2PO4]), and nitrogen (3 mg N L-1[NaNO3]) were used. Chlorophyll a, ash-free dry weight, abundance of main biofilm groups and nutrient contents in biofilm were analyzed. At initial exposure time, all treatments were dominated by Cyanobacteria; through the exposure period, it was observed a progressive replacement by Bacillariophyceae. This replacement occurred on day 3 for the control and was differentially delayed in all herbicides and/or nutrient treatments in which the abundance of cyanobacteria remains significant yet in T5. A significant correlation was observed between the abundance of cyanobacteria and the concentration of atrazine, suggesting that this group is less sensitive than diatoms. The presence of agrochemicals exerted differential effects on the different algal groups. Herbicides contributed to phosphorus and nitrogen inputs. The most frequently observed interactions between experimental factors (nutrients and herbicides) was additivity excepting for species richness (antagonistic effect). In the final recovery time, no significant differences were found between the treatments and the control in most of the evaluated parameters, evincing the resilience of the community.
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Affiliation(s)
- María Florencia Bodean
- Instituto Nacional de Limnología 'INALI', Consejo Nacional de Investigaciones Científicas y Técnicas - Universidad Nacional del Litoral (CONICET-UNL), Ciudad Universitaria, Santa Fe, Argentina
| | - Luciana Regaldo
- Facultad de Humanidades y Ciencias (FHUC, UNL-CONICET), Ciudad Universitaria, Santa Fe, Argentina
| | - Gisela Mayora
- Instituto Nacional de Limnología 'INALI', Consejo Nacional de Investigaciones Científicas y Técnicas - Universidad Nacional del Litoral (CONICET-UNL), Ciudad Universitaria, Santa Fe, Argentina
| | - Celeste Mora
- Instituto Nacional de Limnología 'INALI', Consejo Nacional de Investigaciones Científicas y Técnicas - Universidad Nacional del Litoral (CONICET-UNL), Ciudad Universitaria, Santa Fe, Argentina
| | - Federico Giri
- Instituto Nacional de Limnología 'INALI', Consejo Nacional de Investigaciones Científicas y Técnicas - Universidad Nacional del Litoral (CONICET-UNL), Ciudad Universitaria, Santa Fe, Argentina; Facultad de Humanidades y Ciencias (FHUC, UNL-CONICET), Ciudad Universitaria, Santa Fe, Argentina
| | - Susana Gervasio
- Instituto Nacional de Tecnología (INTEC, CONICET - UNL), Parque Tecnológico Litoral Centro, Santa Fe, Argentina
| | - Andrea Popielarz
- Instituto Nacional de Tecnología (INTEC, CONICET - UNL), Parque Tecnológico Litoral Centro, Santa Fe, Argentina
| | | | - Magdalena Licursi
- Instituto Nacional de Limnología 'INALI', Consejo Nacional de Investigaciones Científicas y Técnicas - Universidad Nacional del Litoral (CONICET-UNL), Ciudad Universitaria, Santa Fe, Argentina.
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16
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Zaffar R, Nazir R, Rather MA, Dar R. Biofilm formation and EPS production enhances the bioremediation potential of Pseudomonas species: a novel study from eutrophic waters of Dal lake, Kashmir, India. Arch Microbiol 2024; 206:89. [PMID: 38308703 DOI: 10.1007/s00203-023-03817-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 12/17/2023] [Accepted: 12/25/2023] [Indexed: 02/05/2024]
Abstract
The present study was conducted with the aim of isolation and identification of the biofilm-forming denitrifying Pseudomonas bacterial strains from eutrophic waters of Dal lake, India, followed by the study of inter-relation of biofilm formation and denitrification potential of Pseudomonas strains. The bacterial strains were characterized by morphological observations and identified using 16S rDNA sequencing followed by the quantification of biofilm formation of these st by crystal violet (CV) assay using 96-well microtiter plate and extracellular polymeric substance (EPS) extraction. Lastly, the nitrate-reducing potential of all Pseudomonas species was studied. Our evaluation revealed that four different Pseudomonas species were observed to have the biofilm-forming potential and nitrate-reducing properties and the species which showed maximum biofilm-forming potential and maximum EPS production exhibited higher nitrate-removing capacity. Moreover, P. otitis was observed to have the highest denitrification capacity (89%) > P. cedrina (83%) > P. azotoform (79%) and the lowest for P. peli (70%). These results clearly signify a positive correlation of biofilm-forming capacity and nitrate-removing ability of Pseudomonas species. This study has for the first time successfully revealed the bioremediation potential of P. otitis, P. cedrina, P. azotoform, and P. peli species, thus contributing to the growing list of known nitrate-reducing Pseudomonas species. Based upon the results, these strains can be extrapolated to nitrate-polluted water systems for combating water pollution.
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Affiliation(s)
- Riasa Zaffar
- Microbiology Research Laboratory, Centre of Research for Development (CORD)/Department of Environmental Science, University of Kashmir, Srinagar, J&K, India
| | - Ruqeya Nazir
- Microbiology Research Laboratory, Centre of Research for Development (CORD)/Department of Environmental Science, University of Kashmir, Srinagar, J&K, India.
| | - Mushtaq Ahmad Rather
- Energy Engineering Lab, Department of Chemical Engineering, National Institute of Technology (NIT), Srinagar, J&K, India
| | - Rubiya Dar
- Microbiology Research Laboratory, Centre of Research for Development (CORD)/Department of Environmental Science, University of Kashmir, Srinagar, J&K, India
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17
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Babich TL, Popova NM, Sokolova DS, Perepelov AV, Safonov AV, Nazina TN. Microbial and Monosaccharide Composition of Biofilms Developing on Sandy Loams from an Aquifer Contaminated with Liquid Radioactive Waste. Microorganisms 2024; 12:275. [PMID: 38399679 PMCID: PMC10892373 DOI: 10.3390/microorganisms12020275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 01/25/2024] [Accepted: 01/26/2024] [Indexed: 02/25/2024] Open
Abstract
The development of microbial biofilms increases the survival of microorganisms in the extreme conditions of ecosystems contaminated with components of liquid radioactive waste (LRW) and may contribute to the successful bioremediation of groundwater. The purpose of this work was to compare the composition of the microorganisms and the exopolysaccharide matrix of the biofilms formed on sandy loams collected at the aquifer from a clean zone and from a zone with nitrate and radionuclide contamination. The aquifer is polluted from the nearby surface repository for liquid radioactive waste (Russia). The phylogenetic diversity of prokaryotes forming biofilms on the sandy loams' surface was determined during 100 days using high-throughput sequencing of the V4 region of the 16S rRNA genes. Scanning electron microscopy was used to study the development of microbial biofilms on the sandy loams. The ratio of proteins and carbohydrates in the biofilms changed in the course of their development, and the diversity of monosaccharides decreased, depending on the contamination of the sites from which the rocks were selected. The presence of pollution affects biofilm formation and EPS composition along with the dominant taxa of microorganisms and their activity. Biofilms establish a concentration gradient of the pollutant and allow the microorganisms involved to effectively participate in the reduction of nitrate and sulfate; they decrease the risk of nitrite accumulation during denitrification and suppress the migration of radionuclides. These biofilms can serve as an important barrier in underground water sources, preventing the spread of pollution. Pure cultures of microorganisms capable of forming a polysaccharide matrix and reducing nitrate, chromate, uranyl, and pertechnetate ions were isolated from the biofilms, which confirmed the possibility of their participation in the bioremediation of the aquifer from nonradioactive waste components and the decrease in the radionuclides' migration.
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Affiliation(s)
- Tamara L. Babich
- Winogradsky Institute of Microbiology, Research Center of Biotechnology, Russian Academy of Sciences, Moscow 119071, Russia; (T.L.B.); (D.S.S.)
| | - Nadezhda M. Popova
- A.N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Moscow 119071, Russia; (N.M.P.); (A.V.S.)
| | - Diyana S. Sokolova
- Winogradsky Institute of Microbiology, Research Center of Biotechnology, Russian Academy of Sciences, Moscow 119071, Russia; (T.L.B.); (D.S.S.)
| | - Andrei V. Perepelov
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia;
| | - Alexey V. Safonov
- A.N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Moscow 119071, Russia; (N.M.P.); (A.V.S.)
| | - Tamara N. Nazina
- Winogradsky Institute of Microbiology, Research Center of Biotechnology, Russian Academy of Sciences, Moscow 119071, Russia; (T.L.B.); (D.S.S.)
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18
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Padilla Suarez EG, Pugliese S, Galdiero E, Guida M, Libralato G, Saviano L, Spampinato M, Pappalardo C, Siciliano A. Multigenerational tests on Daphnia spp.: a vision and new perspectives. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 337:122629. [PMID: 37775025 DOI: 10.1016/j.envpol.2023.122629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 09/21/2023] [Accepted: 09/25/2023] [Indexed: 10/01/2023]
Abstract
Multigenerational toxicity testing is a valuable tool for understanding the long-term effects of contaminants on aquatic organisms. This review focuses on the use of multigenerational tests with Daphnia, a widely used model organism in aquatic toxicological studies. The review highlights the importance of studying multiple generations to assess Daphnia spp. reproductive, growth, and physiological responses to various contaminants. We discuss the outcomes of multigenerational tests involving different contaminants, including nanoparticles, pesticides, and pharmaceuticals. The results reveal that multigenerational exposure can lead to transgenerational effects, where the impacts of contaminants are observed in subsequent generations even after the initial exposure has ceased. These transgenerational effects often manifest as reproduction, growth, and development alterations. Furthermore, we emphasize the need for standardized protocols in multigenerational testing to ensure comparability and reproducibility of results across studies. We also discuss the implications of multigenerational testing for ecological risk assessment, as it provides a more realistic representation of the long-term effects of contaminants on populations and ecosystems. Overall, this review highlights the significance of multigenerational tests with Daphnia in advancing our understanding of the ecological impacts of contaminants. Such tests provide valuable insights into the potential risks associated with long-term exposure to pollutants and contribute to the development of effective mitigation strategies for aquatic ecosystems.
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Affiliation(s)
| | - S Pugliese
- Department of Biology, University of Naples Federico II, Naples, Italy
| | - E Galdiero
- Department of Biology, University of Naples Federico II, Naples, Italy.
| | - M Guida
- Department of Biology, University of Naples Federico II, Naples, Italy; NBFC, National Biodiversity Future Center, Palermo, 90133, Italy
| | - G Libralato
- Department of Biology, University of Naples Federico II, Naples, Italy
| | - L Saviano
- Department of Biology, University of Naples Federico II, Naples, Italy
| | - M Spampinato
- Department of Biology, University of Naples Federico II, Naples, Italy; NBFC, National Biodiversity Future Center, Palermo, 90133, Italy
| | - C Pappalardo
- Department of Biology, University of Naples Federico II, Naples, Italy
| | - A Siciliano
- Department of Biology, University of Naples Federico II, Naples, Italy
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Naaz T, Sharma K, Roy A, Singh Mathuriya A, Yadav V, Pandit S, Hasan M, Anand J, Joshi S, Sharma R. Simultaneous microbial electrochemical degradation of methyl orange and bioelectricity generation using coculture as anode inoculum in a microbial fuel cell. Food Chem Toxicol 2023; 181:114058. [PMID: 37788762 DOI: 10.1016/j.fct.2023.114058] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 08/31/2023] [Accepted: 09/20/2023] [Indexed: 10/05/2023]
Abstract
Methyl Orange, an azo dye, is a widely used colouring agent in the textile industry. The study aimed to investigate the efficiency of bioremediating bacteria in degrading methyl orange. Escherichia coli (E. coli), a Methyl Orange-degrading bacterium, was isolated from cow dung and its biochemical properties were analysed using 16S rRNA sequencing, and MALDI-TOF MS. A pre-cultured strain of Pseudomonas aeruginosa was co-cultured with E. coli in 1:1 ration in a microbial fuel cell (MFC) for simultaneous electricity production and methyl orange degradation. The degradation was combined with biological wastewater treatment at varying Methyl Orange concentrations, and the electrochemical characteristics were analysed through polarisation study, cyclic voltammetry, and electrochemical impedance spectroscopy. The impact of parameters such as anolyte pH, dye concentration, incubation time, and substrate concentrations were also studied. This study confirmed E. coli as an effective methyl orange degrading bacteria with a maximum % degradation efficiency of 98% after 48 h incubation at pH 7.0. The co-culture of isolated microorganisms at 250 mg/L of methyl orange concentration showed a maximum power density 6.5 W/m3. Further, anode modification with Fe2O3 nanoparticles on the anode surface enhanced power production to 11.2 W/m3, an increase of 4.7 W/m3.
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Affiliation(s)
- Tahseena Naaz
- Department of Life Sciences, School of Basic Science and Research, Sharda University, Greater Noida, 201306, India
| | - Kalpana Sharma
- Department of Life Sciences, School of Basic Science and Research, Sharda University, Greater Noida, 201306, India
| | - Arpita Roy
- Department of Biotechnology, Sharda School of Engineering & Technology, Sharda University, Greater Noida, India
| | - Abhilasha Singh Mathuriya
- Ministry of Environment, Forest and Climate Change, Indira Paryavaran Bhawan, Jor Bagh, New Delhi, 110003, India
| | - Vineeta Yadav
- Department of Life Sciences, School of Basic Science and Research, Sharda University, Greater Noida, 201306, India
| | - Soumya Pandit
- Department of Life Sciences, School of Basic Science and Research, Sharda University, Greater Noida, 201306, India.
| | - Mudassir Hasan
- Department of Chemical Engineering King Khalid University, Saudi Arabia
| | - Jigisha Anand
- Department of Biotechnology, Graphic Era Deemed to be University, Dehradun, Uttarakhand, India
| | - Sanket Joshi
- Oil & Gas Research Centre, Sultan Qaboos University, Muscat, Oman
| | - Rohit Sharma
- Department of Rasa Shastra and Bhaishajya Kalpana, Faculty of Ayurveda, Institute of Medical Sciences, Banaras Hindu University, Varanasi, 221005, Uttar Pradesh, India
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20
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Syed Z, Sogani M, Rajvanshi J, Sonu K. Microbial Biofilms for Environmental Bioremediation of Heavy Metals: a Review. Appl Biochem Biotechnol 2023; 195:5693-5711. [PMID: 36576654 DOI: 10.1007/s12010-022-04276-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/16/2022] [Indexed: 12/29/2022]
Abstract
Heavy metal pollution caused due to various industrial and mining activities poses a serious threat to all forms of life in the environment because of the persistence and toxicity of metal ions. Microbial-mediated bioremediation including microbial biofilms has received significant attention as a sustainable tool for heavy metal removal as it is considered safe, effective, and feasible. The biofilm matrix is dynamic, having microbial cells as major components with constantly changing and evolving microenvironments. This review summarizes the bioremediation potential of bacterial biofilms for different metal ions. The composition and mechanism of biofilm formation along with interspecies communication among biofilm-forming bacteria have been discussed. The interaction of biofilm-associated microbes with heavy metals takes place through a variety of mechanisms. These include biosorption and bioaccumulation in which the microbes interact with the metal ions leading to their conversion from a highly toxic form to a less toxic form. Such interactions are facilitated via the negative charge of the extracellular polymeric substances on the surface of the biofilm with the positive charge of the metal ions and the high cell densities and high concentrations of cell-cell signaling molecules within the biofilm matrix. Furthermore, the impact of the anodic and cathodic redox potentials in a bioelectrochemical system (BES) for the reduction, removal, and recovery of numerous heavy metal species provides an interesting insight into the bacterial biofilm-mediated bioelectroremediation process. The review concludes that biofilm-linked bioremediation is a viable option for the mitigation of heavy metal pollution in water and ecosystem recovery.
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Affiliation(s)
- Zainab Syed
- Department of Biosciences, Manipal University Jaipur, Jaipur, 303007, Rajasthan, India
| | - Monika Sogani
- Department of Biosciences, Manipal University Jaipur, Jaipur, 303007, Rajasthan, India.
| | - Jayana Rajvanshi
- Department of Biosciences, Manipal University Jaipur, Jaipur, 303007, Rajasthan, India
| | - Kumar Sonu
- Department of Mechanical Engineering, Kashi Institute of Technology, Varanasi, 221307, Uttar Pradesh, India
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21
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Bertrans-Tubau L, Menard Y, Batisson I, Creusot N, Mazzella N, Millan-Navarro D, Moreira A, Morin S, Ponsá S, Abril M, Proia L, Romaní AM, Artigas J. Dissipation of pesticides by stream biofilms is influenced by hydrological histories. FEMS Microbiol Ecol 2023; 99:fiad083. [PMID: 37480243 DOI: 10.1093/femsec/fiad083] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 07/18/2023] [Accepted: 07/20/2023] [Indexed: 07/23/2023] Open
Abstract
To evaluate the effects of hydrological variability on pesticide dissipation capacity by stream biofilms, we conducted a microcosm study. We exposed biofilms to short and frequent droughts (daily frequency), long and less frequent droughts (weekly frequency) and permanently immersed controls, prior to test their capacities to dissipate a cocktail of pesticides composed of tebuconazole, terbuthylazine, imidacloprid, glyphosate and its metabolite aminomethylphosphonic acid. A range of structural and functional descriptors of biofilms (algal and bacterial biomass, extracellular polymeric matrix (EPS) concentration, microbial respiration, phosphorus uptake and community-level physiological profiles) were measured to assess drought effects. In addition, various parameters were measured to characterise the dynamics of pesticide dissipation by biofilms in the different hydrological treatments (% dissipation, peak asymmetry, bioconcentration factor, among others). Results showed higher pesticide dissipation rates in biofilms exposed to short and frequent droughts, despite of their lower biomass and EPS concentration, compared to biofilms in immersed controls or exposed to long and less frequent droughts. High accumulation of hydrophobic pesticides (tebuconazole and terbuthylazine) was measured in biofilms despite the short exposure time (few minutes) in our open-flow microcosm approach. This research demonstrated the stream biofilms capacity to adsorb hydrophobic pesticides even in stressed drought environments.
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Affiliation(s)
- Lluís Bertrans-Tubau
- BETA Technological Centre- University of Vic-Central University of Catalunya (BETA-UVic-UCC), Carretera de Roda 70, 08500 Vic, Barcelona, Spain
| | - Yoann Menard
- CNRS, Laboratoire Microorganismes: Génome et Environnement (LMGE), Université Clermont Auvergne, Campus Universitaire des Cézeaux, 1 Impasse Amélie Murat. F-63000 Clermont-Ferrand, France
| | - Isabelle Batisson
- CNRS, Laboratoire Microorganismes: Génome et Environnement (LMGE), Université Clermont Auvergne, Campus Universitaire des Cézeaux, 1 Impasse Amélie Murat. F-63000 Clermont-Ferrand, France
| | | | | | | | | | - Soizic Morin
- INRAE, UR EABX, 50 avenue de Verdun, F-33612 Cestas, France
| | - Sergio Ponsá
- BETA Technological Centre- University of Vic-Central University of Catalunya (BETA-UVic-UCC), Carretera de Roda 70, 08500 Vic, Barcelona, Spain
| | - Meritxell Abril
- BETA Technological Centre- University of Vic-Central University of Catalunya (BETA-UVic-UCC), Carretera de Roda 70, 08500 Vic, Barcelona, Spain
| | - Lorenzo Proia
- BETA Technological Centre- University of Vic-Central University of Catalunya (BETA-UVic-UCC), Carretera de Roda 70, 08500 Vic, Barcelona, Spain
| | - Anna M Romaní
- Institute of Aquatic Ecology, University of Girona, Campus Montilivi, 17005 Girona, Spain
| | - Joan Artigas
- CNRS, Laboratoire Microorganismes: Génome et Environnement (LMGE), Université Clermont Auvergne, Campus Universitaire des Cézeaux, 1 Impasse Amélie Murat. F-63000 Clermont-Ferrand, France
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22
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Astuti MP, Taylor WS, Lewis GD, Padhye LP. Surface-modified activated carbon for N-nitrosodimethylamine removal in the continuous flow biological activated carbon columns. JOURNAL OF HAZARDOUS MATERIALS 2023; 455:131518. [PMID: 37172385 DOI: 10.1016/j.jhazmat.2023.131518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Revised: 04/08/2023] [Accepted: 04/25/2023] [Indexed: 05/14/2023]
Abstract
The carcinogenic nitrogenous disinfection by-product, N-nitrosodimethylamine (NDMA), is challenging to adsorb due to its high polarity and solubility. Our previous research demonstrated that the adsorptive removal of NDMA can be improved using surface-modified activated carbon (AC800). The current study evaluated the efficacy of AC800 in removing NDMA in a continuous-flow column over 75 days, using both granular activated carbon (GAC) and biologically activated carbon (BAC) columns. The AC800 GAC column demonstrated extended breakthrough and exhaustion times of 10 days and 22 days, respectively, compared to the conventional GAC column at 4 days and 10.5 days. The surface modification effect persisted for 25 days before the removal trends became indistinguishable. The AC800 BAC column outperformed the conventional BAC column with a longer breakthrough time of 11.3 days compared to 7.4 days. BAC columns consistently showed greater NDMA removal, emphasizing the role of biodegradation in NDMA removal on carbon. The higher NDMA removal in the inoculated columns was attributed to increased microbial diversity and the dominance of six specific genera, Methylobacterium, Phyllobacterium, Curvibacter, Acidovorax, Variovorax, and Rhodoferax. This study provides new insights into using modified activated carbon as GAC and BAC media in a real-world continuous-flow setup.
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Affiliation(s)
- Maryani P Astuti
- Department of Civil and Environmental Engineering, University of Auckland, Auckland, New Zealand; Environmental Engineering Study Program, Faculty of Engineering, President University, Bekasi, Indonesia
| | - William S Taylor
- Institute of Environmental Science and Research (ESR), Christchurch, New Zealand
| | - Gillian D Lewis
- School of Biological Science, University of Auckland, Auckland, New Zealand
| | - Lokesh P Padhye
- Department of Civil and Environmental Engineering, University of Auckland, Auckland, New Zealand.
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23
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Naskar S, Gour N. Realization of Amyloid-like Aggregation as a Common Cause for Pathogenesis in Diseases. Life (Basel) 2023; 13:1523. [PMID: 37511898 PMCID: PMC10381831 DOI: 10.3390/life13071523] [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: 05/22/2023] [Revised: 06/27/2023] [Accepted: 07/05/2023] [Indexed: 07/30/2023] Open
Abstract
Amyloids were conventionally referred to as extracellular and intracellular accumulation of Aβ42 peptide, which causes the formation of plaques and neurofibrillary tangles inside the brain leading to the pathogenesis in Alzheimer's disease. Subsequently, amyloid-like deposition was found in the etiology of prion diseases, Parkinson's disease, type II diabetes, and cancer, which was attributed to the aggregation of prion protein, α-Synuclein, islet amyloid polypeptide protein, and p53 protein, respectively. Hence, traditionally amyloids were considered aggregates formed exclusively by proteins or peptides. However, since the last decade, it has been discovered that other metabolites, like single amino acids, nucleobases, lipids, glucose derivatives, etc., have a propensity to form amyloid-like toxic assemblies. Several studies suggest direct implications of these metabolite assemblies in the patho-physiology of various inborn errors of metabolisms like phenylketonuria, tyrosinemia, cystinuria, and Gaucher's disease, to name a few. In this review, we present a comprehensive literature overview that suggests amyloid-like structure formation as a common phenomenon for disease progression and pathogenesis in multiple syndromes. The review is devoted to providing readers with a broad knowledge of the structure, mode of formation, propagation, and transmission of different extracellular amyloids and their implications in the pathogenesis of diseases. We strongly believe a review on this topic is urgently required to create awareness about the understanding of the fundamental molecular mechanism behind the origin of diseases from an amyloid perspective and possibly look for a common therapeutic strategy for the treatment of these maladies by designing generic amyloid inhibitors.
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Affiliation(s)
- Soumick Naskar
- Department of Chemistry, Indrashil University, Kadi, Mehsana 382740, Gujarat, India
| | - Nidhi Gour
- Department of Chemistry, Indrashil University, Kadi, Mehsana 382740, Gujarat, India
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24
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Dash DM, Osborne WJ. A systematic review on the implementation of advanced and evolutionary biotechnological tools for efficient bioremediation of organophosphorus pesticides. CHEMOSPHERE 2023; 313:137506. [PMID: 36526134 DOI: 10.1016/j.chemosphere.2022.137506] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 11/11/2022] [Accepted: 12/06/2022] [Indexed: 06/17/2023]
Abstract
Ever since the concept of bioremediation was introduced, microorganisms, microbial enzymes and plants have been used as principal elements for Organophosphate pesticide (OPP) bioremediation. The enzyme systems and genetic profile of these microbes have been studied deeply in past years. Plant growth promoting rhizobacteria (PGPR) are considered as one of the potential candidates for OPP bioremediation and has been widely used to stimulate the phytoremediation potential of plants. Constructed wetlands (CWs) in OPP biodegradation have brought new prospects to microcosm and mesocosm based remediation strategies. Application of synthetic biology has provided a new dimension to the field of OPP bioremediation by introducing concepts like, gene manipulation andediting, expression and regulation of catabolic enzymes, implementation of whole-cell based and enzyme based biosensor systems for the detection and monitoring of OPP pollution in both terrestrial and aquatic environment. System biology and bioinformatics tools have rendered significant knowledge regarding the genetic, enzymatic and biochemical aspects of microbes and plants thereby, helping researchers to analyze the mechanism of OPP biodegradation. Structural biology has provided significant conceptual information regarding OPP biodegradation pathways, structural and functional characterization of metabolites and enzymes, enzyme-pollutant interactions, etc. Therefore, this review discussed the prospects and challenges of most advanced and high throughput strategies implemented for OPP biodegradation. The review also established a comparative analysis of various bioremediation techniques and highlighted the interdependency among them. The review highly suggested the simultaneous implementation of more than one remediation strategy or a combinational approach creating an advantageous hybrid technique for OPP bioremediation.
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Affiliation(s)
- Dipti Mayee Dash
- Department of Bioscience School of Bio Sciences and Technology, Vellore Institute of Technology, Vellore, 632014, Tamil Nadu, India
| | - W Jabez Osborne
- Department of Bioscience School of Bio Sciences and Technology, Vellore Institute of Technology, Vellore, 632014, Tamil Nadu, India.
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25
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Zein HF, Sutthibutpong T. Roles of Tryptophan and Charged Residues on the Polymorphisms of Amyloids Formed by K-Peptides of Hen Egg White Lysozyme Investigated through Molecular Dynamics Simulations. Int J Mol Sci 2023; 24:ijms24032626. [PMID: 36768943 PMCID: PMC9916845 DOI: 10.3390/ijms24032626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2022] [Revised: 12/15/2022] [Accepted: 12/19/2022] [Indexed: 01/31/2023] Open
Abstract
Atomistic molecular dynamics simulations of amyloid models, consisting of the previously reported STDY-K-peptides and K-peptides from the hen egg white lysozyme (HEWL), were performed to address the effects of charged residues and pH observed in an in vitro study. Simulation results showed that amyloid models with antiparallel configurations possessed greater stability and compactness than those with parallel configurations. Then, peptide chain stretching and ordering were measured through the end-to-end distance and the order parameter, for which the amyloid models consisting of K-peptides and the STDY-K-peptides at pH 2 displayed a higher level of chain stretching and ordering. After that, the molecular mechanics energy decomposition and the radial distribution function (RDF) clearly displayed the importance of Trp62 to the K-peptide and the STDY-K-peptide models at pH 2. Moreover, the results also displayed how the negatively charged Asp52 disrupted the interaction networks and prevented the amyloid formation from STDY-K-peptide at pH 7. Finally, this study provided an insight into the interplay between pH conditions and molecular interactions underlying the formation of amyloid fibrils from short peptides contained within the HEWL. This served as a basis of understanding towards the design of other amyloids for biomaterial applications.
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Affiliation(s)
- Husnul Fuad Zein
- Nanoscience and Nanotechnology Program, Faculty of Science, King Mongkut’s University of Technology Thonburi (KMUTT), 126 Pracha Uthit Rd., Bang Mod, Thung Khru, Bangkok 10140, Thailand
- Department of Physics, King Mongkut’s University of Technology Thonburi (KMUTT), Bangkok 10140, Thailand
| | - Thana Sutthibutpong
- Nanoscience and Nanotechnology Program, Faculty of Science, King Mongkut’s University of Technology Thonburi (KMUTT), 126 Pracha Uthit Rd., Bang Mod, Thung Khru, Bangkok 10140, Thailand
- Department of Physics, King Mongkut’s University of Technology Thonburi (KMUTT), Bangkok 10140, Thailand
- Center of Excellence in Theoretical and Computational Science (TaCS-CoE), Faculty of Science, King Mongkut’s University of Technology Thonburi (KMUTT), 126 Pracha Uthit Rd., Bang Mod, Thung Khru, Bangkok 10140, Thailand
- Correspondence:
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26
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Performance of a Combined Bacteria/Zeolite Permeable Barrier on the Rehabilitation of Wastewater Containing Atrazine and Heavy Metals. Processes (Basel) 2023. [DOI: 10.3390/pr11010246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Several chemicals, such as pesticides and heavy metals, are frequently encountered together in environment matrices, becoming a priority concerning the prevention of their emissions, as well as their removal from the environment. In this sense, this work aimed to evaluate the effectiveness of a permeable biosorbent bio-barrier reactor (PBR) on the removal of atrazine and heavy metals (copper and zinc) from aqueous solutions. The permeable bio-barrier was built with a bacterial biofilm of R. viscosum supported on 13X zeolite. One of the aims of this work is the investigation of the toxic effects of atrazine, copper and zinc on the bacterial growth, as well as the assessment of their ability to adapt to repeated exposure to contaminants and to degrade atrazine. The growth of R. viscosum was not affected by concentrations of atrazine bellow 7 mg/L. However, copper and zinc in binary solutions were able to inhibit the growth of bacteria for all the concentrations tested (5 to 40 mg/L). The pre-acclimation of the bacteria to the contaminants allowed for an increase of 50% of the bacterial growth. Biodegradation tests showed that 35% of atrazine was removed/degraded, revealing that this herbicide is a recalcitrant compound that is hard to degrade by pure cultures. The development of a PBR with R. viscosum supported on zeolite was successfully performed and the removal rates were 85% for copper, 95% for zinc and 25% for atrazine, showing the potential of the sustainable and low-cost technology herein proposed.
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27
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Bokade P, Gaur VK, Tripathi V, Bobate S, Manickam N, Bajaj A. Bacterial remediation of pesticide polluted soils: Exploring the feasibility of site restoration. JOURNAL OF HAZARDOUS MATERIALS 2023; 441:129906. [PMID: 36088882 DOI: 10.1016/j.jhazmat.2022.129906] [Citation(s) in RCA: 19] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 08/31/2022] [Accepted: 09/01/2022] [Indexed: 06/15/2023]
Abstract
For decades, reclamation of pesticide contaminated sites has been a challenging avenue. Due to increasing agricultural demand, the application of synthetic pesticides could not be controlled in its usage, and it has now adversely impacted the soil, water, and associated ecosystems posing adverse effects on human health. Agricultural soil and pesticide manufacturing sites, in particular, are one of the most contaminated due to direct exposure. Among various strategies for soil reclamation, ecofriendly microbial bioremediation suffers inherent challenges for large scale field application as interaction of microbes with the polluted soil varies greatly under climatic conditions. Methodically, starting from functional or genomic screening, enrichment isolation; functional pathway mapping, production of tensioactive metabolites for increasing the bioavailability and bio-accessibility, employing genetic engineering strategies for modifications in existing catabolic genes to enhance the degradation activity; each step-in degradation study has challenges and prospects which can be addressed for successful application. The present review critically examines the methodical challenges addressing the feasibility for restoring and reclaiming pesticide contaminated sites along with the ecotoxicological risk assessments. Overall, it highlights the need to fine-tune the available processes and employ interdisciplinary approaches to make microbe assisted bioremediation as the method of choice for reclamation of pesticide contaminated sites.
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Affiliation(s)
- Priyanka Bokade
- Environmental Biotechnology and Genomics Division, CSIR-National Environmental Engineering Research Institute, Nehru Marg, Nagpur 440020, Maharashtra, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India
| | - Vivek Kumar Gaur
- Environmental Biotechnology Laboratory, Environmental Toxicology Group, CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhawan, 31 Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India; School of Energy and Chemical Engineering, UNIST, Ulsan 44919, South Korea
| | - Varsha Tripathi
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India; Environmental Biotechnology Laboratory, Environmental Toxicology Group, CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhawan, 31 Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India
| | - Shishir Bobate
- Environmental Biotechnology and Genomics Division, CSIR-National Environmental Engineering Research Institute, Nehru Marg, Nagpur 440020, Maharashtra, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India
| | - Natesan Manickam
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India; Environmental Biotechnology Laboratory, Environmental Toxicology Group, CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhawan, 31 Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India
| | - Abhay Bajaj
- Environmental Biotechnology and Genomics Division, CSIR-National Environmental Engineering Research Institute, Nehru Marg, Nagpur 440020, Maharashtra, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India.
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28
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A mini-review on innovative strategies for simultaneous microbial bioremediation of toxic heavy metals and dyes from wastewater. Arch Microbiol 2023; 205:29. [DOI: 10.1007/s00203-022-03367-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 11/30/2022] [Accepted: 12/05/2022] [Indexed: 12/23/2022]
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29
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Haque MM, Haque MA, Mosharaf MK, Islam MS, Islam MM, Hasan M, Molla AH, Haque MA. Biofilm-mediated decolorization, degradation and detoxification of synthetic effluent by novel biofilm-producing bacteria isolated from textile dyeing effluent. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 314:120237. [PMID: 36150625 DOI: 10.1016/j.envpol.2022.120237] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 08/30/2022] [Accepted: 09/17/2022] [Indexed: 06/16/2023]
Abstract
Biofilm-mediated bioremediation of xenobiotic pollutants is an environmental friendly biological technique. In this study, 36 out of 55 bacterial isolates developed biofilms in glass test tubes containing salt-optimized broth plus 2% glycerol (SOBG). Scanning electron microscopy, Fourier transform infrared (FTIR) spectroscopy, and Congo red- and Calcofluor binding results showed biofilm matrices contain proteins, curli, nanocellulose-rich polysaccharides, nucleic acids, lipids, and peptidoglycans. Several functional groups including -OH, N-H, C-H, CO, COO-, -NH2, PO, C-O, and C-C were also predicted. By sequencing, ten novel biofilm-producing bacteria (BPB) were identified, including Exiguobacterium indicum ES31G, Kurthia gibsonii ES43G, Kluyvera cryocrescens ES45G, Cedecea lapagei ES48G, Enterobacter wuhouensis ES49G, Aeromonas caviae ES50G, Lysinibacillus sphaericus ES51G, Acinetobacter haemolyticus ES52G, Enterobacter soli ES53G, and Comamonas aquatica ES54G. The Direct Red (DR) 28 (a carcinogenic and mutagenic dye used in dyeing and biomedical processes) decolorization process was optimized in selected bacterial isolates. Under optimum conditions (SOBG medium, 75 mg L-1 dye, pH 7, 28 °C, microaerophilic condition and within 72 h of incubation), five of the bacteria tested could decolorize 97.8% ± 0.56-99.7% ± 0.45 of DR 28 dye. Azoreductase and laccase enzymes responsible for biodegradation were produced under the optimum condition. UV-Vis spectral analysis revealed that the azo (-NN-) bond peak at 476 nm had almost disappeared in all of the decolorized samples. FTIR data revealed that the foremost characteristic peaks had either partly or entirely vanished or were malformed or stretched. The chemical oxygen demand decreased by 83.3-91.3% in the decolorized samples, while plant probiotic bacterial growth was indistinguishable in the biodegraded metabolites and the original dye. Furthermore, seed germination (%) was higher in the biodegraded metabolites than the parent dye. Thus, examined BPB could provide potential solutions for the bioremediation of industrial dyes in wastewater.
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Affiliation(s)
- Md Manjurul Haque
- Department of Environmental Science, Faculty of Agriculture, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, 1706, Bangladesh.
| | - Md Amdadul Haque
- Department of Agro-processing, Faculty of Agriculture, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, 1706, Bangladesh
| | - Md Khaled Mosharaf
- Department of Environmental Science, Faculty of Agriculture, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, 1706, Bangladesh
| | - Md Shahidul Islam
- Bangladesh Jute Research Institute, Manik Mia Avenue, Dhaka, 1207, Bangladesh
| | - Md Mynul Islam
- Plant Pathology Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur, 1701, Bangladesh
| | - Mehedi Hasan
- Department of Environmental Science, Faculty of Agriculture, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, 1706, Bangladesh
| | - Abul Hossain Molla
- Department of Environmental Science, Faculty of Agriculture, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, 1706, Bangladesh
| | - Md Ashraful Haque
- Institute of Biotechnology and Genetic Engineering, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, 1706, Bangladesh
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30
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Kadam S, Chattopadhyay A, Kaushik KS. Of biofilms and beehives: An analogy-based instructional tool to introduce biofilms in school and undergraduate curriculum. Biofilm 2022; 4:100066. [PMID: 35036909 PMCID: PMC8752906 DOI: 10.1016/j.bioflm.2021.100066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2021] [Revised: 12/27/2021] [Accepted: 12/29/2021] [Indexed: 11/21/2022] Open
Abstract
The concept of biofilms and biofilm-based research is largely absent or minimally described in school and undergraduate life science curriculum. While it is well-established that microbes, such as bacteria and fungi, most often exist in multicellular biofilm communities, descriptions in standard biology textbooks continue to focus on the single-celled form of microbial life. We have developed an analogy-based instructional tool to introduce and explain biofilms to school and undergraduate students. The module employs an analogy with beehives, given that biofilms and beehives are both 'superorganism' states, to explain key biofilm features such as development and structure, chemical communication, division of labor and emergent properties. We delivered this analogy-based learning tool to a cohort of 49 students, including middle-to-high school and undergraduate students, and based on participant feedback and learnings, present a formal evaluation of the instructional tool. Further, we outline prerequisites and learning approaches that can enable the delivery of this module in classroom and virtual learning settings, including suggestions for pre-lesson reading, student-centred interactive activities, and specific learning objectives. Taken together, this instructional analogy holds potential to serve as an educational tool to introduce biofilms in school and undergraduate curricula in a relatable and comprehensible manner.
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Affiliation(s)
- Snehal Kadam
- Hull York Medical School, University of Hull, United Kingdom
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31
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Banić N, Šojić Merkulov D, Despotović V, Finčur N, Ivetić T, Bognár S, Jovanović D, Abramović B. Rapid Removal of Organic Pollutants from Aqueous Systems under Solar Irradiation Using ZrO 2/Fe 3O 4 Nanoparticles. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27228060. [PMID: 36432160 PMCID: PMC9698733 DOI: 10.3390/molecules27228060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 11/16/2022] [Accepted: 11/17/2022] [Indexed: 11/22/2022]
Abstract
Pure water scarcity is an emerging, all-around problem that globally affects both the life quality and the world's economy. Heterogeneous photocatalysis under solar irradiation is a promising technique for the organic pollutants (e.g., pesticides, drugs) removal from an aqueous environment. Furthermore, the drawbacks of commercially available photocatalysts can be successfully overcome by using innovative nanoparticles, such as ZrO2/Fe3O4. Four ZrO2/Fe3O4 nanopowders with a different mass ratio of ZrO2 and Fe3O4 were synthesized using the chemical co-precipitation method. XRD analysis showed the presence of magnetite and hematite Fe-oxide phases in all samples. The content of the magnetite phase increased with the addition of 19% ZrO2. The efficiency of the newly synthesized ZrO2/Fe3O4 nanoparticles was investigated in the rapid removal of selected pollutants under various experimental conditions. Nevertheless, the influence of the water matrix on photocatalytic degradation was also examined. The obtained data showed that using ZrO2/Fe3O4 nanosystems, an appropriate removal rate of the selected pesticides and pharmaceuticals can be reached after 120 min of solar irradiation. Further, the total organic carbon measurements proved the mineralization of the target emerging pollutants. ZrO2/Fe3O4 nanoparticles are economically feasible, as their removal from the suspension can be easily achieved using affordable, environmentally-friendly magnetic separation.
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Affiliation(s)
- Nemanja Banić
- Department of Chemistry, Biochemistry and Environmental Protection, University of Novi Sad Faculty of Sciences, Trg Dositeja Obradovića 3, 21000 Novi Sad, Serbia
| | - Daniela Šojić Merkulov
- Department of Chemistry, Biochemistry and Environmental Protection, University of Novi Sad Faculty of Sciences, Trg Dositeja Obradovića 3, 21000 Novi Sad, Serbia
| | - Vesna Despotović
- Department of Chemistry, Biochemistry and Environmental Protection, University of Novi Sad Faculty of Sciences, Trg Dositeja Obradovića 3, 21000 Novi Sad, Serbia
| | - Nina Finčur
- Department of Chemistry, Biochemistry and Environmental Protection, University of Novi Sad Faculty of Sciences, Trg Dositeja Obradovića 3, 21000 Novi Sad, Serbia
| | - Tamara Ivetić
- Department of Physics, University of Novi Sad Faculty of Sciences, Trg Dositeja Obradovića 4, 21000 Novi Sad, Serbia
| | - Szabolcs Bognár
- Department of Chemistry, Biochemistry and Environmental Protection, University of Novi Sad Faculty of Sciences, Trg Dositeja Obradovića 3, 21000 Novi Sad, Serbia
| | - Dušica Jovanović
- Department of Chemistry, Biochemistry and Environmental Protection, University of Novi Sad Faculty of Sciences, Trg Dositeja Obradovića 3, 21000 Novi Sad, Serbia
| | - Biljana Abramović
- Department of Chemistry, Biochemistry and Environmental Protection, University of Novi Sad Faculty of Sciences, Trg Dositeja Obradovića 3, 21000 Novi Sad, Serbia
- Correspondence:
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32
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Adoni P, Romanyuk A, Overton TW, Fernandez-Trillo P. Polymer-induced biofilms for enhanced biocatalysis. MATERIALS HORIZONS 2022; 9:2592-2602. [PMID: 35912866 PMCID: PMC9528183 DOI: 10.1039/d2mh00607c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Accepted: 07/19/2022] [Indexed: 06/15/2023]
Abstract
The intrinsic resilience of biofilms to environmental conditions makes them an attractive platform for biocatalysis, bioremediation, agriculture or consumer health. However, one of the main challenges in these areas is that beneficial bacteria are not necessarily good at biofilm formation. Currently, this problem is solved by genetic engineering or experimental evolution, techniques that can be costly and time consuming, require expertise in molecular biology and/or microbiology and, more importantly, are not suitable for all types of microorganisms or applications. Here we show that synthetic polymers can be used as an alternative, working as simple additives to nucleate the formation of biofilms. Using a combination of controlled radical polymerization and dynamic covalent chemistry, we prepare a set of synthetic polymers carrying mildly cationic, aromatic, heteroaromatic or aliphatic moieties. We then demonstrate that hydrophobic polymers induce clustering and promote biofilm formation in MC4100, a strain of Escherichia coli that forms biofilms poorly, with aromatic and heteroaromatic moieties leading to the best performing polymers. Moreover, we compare the effect of the polymers on MC4100 against PHL644, an E. coli strain that forms biofilms well due to a single point mutation which increases expression of the adhesin curli. In the presence of selected polymers, MC4100 can reach levels of biomass production and curli expression similar or higher than PHL644, demonstrating that synthetic polymers promote similar changes in microbial physiology than those introduced following genetic modification. Finally, we demonstrate that these polymers can be used to improve the performance of MC4100 biofilms in the biocatalytic transformation of 5-fluoroindole into 5-fluorotryptophan. Our results show that incubation with these synthetic polymers helps MC4100 match and even outperform PHL644 in this biotransformation, demonstrating that synthetic polymers can underpin the development of beneficial applications of biofilms.
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Affiliation(s)
- Pavan Adoni
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK.
- School of Chemical Engineering, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK.
- Institute of Microbiology and Infection, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Andrey Romanyuk
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK.
- Institute of Microbiology and Infection, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Tim W Overton
- School of Chemical Engineering, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK.
- Institute of Microbiology and Infection, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Paco Fernandez-Trillo
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK.
- Institute of Microbiology and Infection, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
- Departamento de Química, Facultade de Ciencias and Centro de Investigacións Científicas Avanzadas (CICA), Universidade da Coruña, 15071 A Coruña, Spain
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33
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Sahreen S, Mukhtar H, Imre K, Morar A, Herman V, Sharif S. Exploring the Function of Quorum Sensing Regulated Biofilms in Biological Wastewater Treatment: A Review. Int J Mol Sci 2022; 23:ijms23179751. [PMID: 36077148 PMCID: PMC9456111 DOI: 10.3390/ijms23179751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Revised: 08/21/2022] [Accepted: 08/26/2022] [Indexed: 11/26/2022] Open
Abstract
Quorum sensing (QS), a type of bacterial cell–cell communication, produces autoinducers which help in biofilm formation in response to cell population density. In this review, biofilm formation, the role of QS in biofilm formation and development with reference to biological wastewater treatment are discussed. Autoinducers, for example, acyl-homoserine lactones (AHLs), auto-inducing oligo-peptides (AIPs) and autoinducer 2, present in both Gram-negative and Gram-positive bacteria, with their mechanism, are also explained. Over the years, wastewater treatment (WWT) by QS-regulated biofilms and their optimization for WWT have gained much attention. This article gives a comprehensive review of QS regulation methods, QS enrichment methods and QS inhibition methods in biological waste treatment systems. Typical QS enrichment methods comprise adding QS molecules, adding QS accelerants and cultivating QS bacteria, while typical QS inhibition methods consist of additions of quorum quenching (QQ) bacteria, QS-degrading enzymes, QS-degrading oxidants, and QS inhibitors. Potential applications of QS regulated biofilms for WWT have also been summarized. At last, the knowledge gaps present in current researches are analyzed, and future study requirements are proposed.
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Affiliation(s)
- Sania Sahreen
- Institute of Industrial Biotechnology, Government College University, Lahore 54000, Pakistan
| | - Hamid Mukhtar
- Institute of Industrial Biotechnology, Government College University, Lahore 54000, Pakistan
- Correspondence: (H.M.); (K.I.); Tel.: +92-3334245581 (H.M.); +40-256277186 (K.I.)
| | - Kálmán Imre
- Department of Animal Production and Veterinary Public Health, Faculty of Veterinary Medicine, Banat’s University of Agricultural Sciences and Veterinary Medicine “King Michael I of Romania”, 300645 Timisoara, Romania
- Correspondence: (H.M.); (K.I.); Tel.: +92-3334245581 (H.M.); +40-256277186 (K.I.)
| | - Adriana Morar
- Department of Animal Production and Veterinary Public Health, Faculty of Veterinary Medicine, Banat’s University of Agricultural Sciences and Veterinary Medicine “King Michael I of Romania”, 300645 Timisoara, Romania
| | - Viorel Herman
- Department of Infectious Diseases and Preventive Medicine, Faculty of Veterinary Medicine, Banat’s University of Agricultural Sciences and Veterinary Medicine “King Michael I of Romania”, 300645 Timisoara, Romania
| | - Sundas Sharif
- Institute of Industrial Biotechnology, Government College University, Lahore 54000, Pakistan
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Jakovljević VD, Radojević ID, Grujić SM, Ostojić AM. Response of selected microbial strains and their consortia to the presence of automobile paints: Biofilm growth, matrix protein content and hydrolytic enzyme activity. Saudi J Biol Sci 2022; 29:103347. [PMID: 35800142 PMCID: PMC9253408 DOI: 10.1016/j.sjbs.2022.103347] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 05/08/2022] [Accepted: 06/10/2022] [Indexed: 11/25/2022] Open
Abstract
The goal of the current study was to examine the effects of pollutants (White color – CP; Metallic red color – FM; Thinner – CN; Thinner for rinsing paint – MF; Basic color (primer) – FH) originating from the automotive industry on the biofilm growth, matrix protein content, and activity of the hydrolytic enzymes of selected microbial strains in laboratory conditions that mimic the bioreactor conditions. The chosen microorganisms (bacteria, yeasts, and fungi) were isolated from automotive industry wastewater. Pure microbe cultures and their consortia were injected into AMB Media carriers and developed into biofilms. The use of AMB media carriers has been linked to an increase in the active surface area colonized by microorganisms. Afterwards, the carriers were transferred to Erlenmeyer flasks with nutrient media and pollutants at a concentration of 200 μL/mL. The current study found that, depending on the microbial strain, development phase, and chemical structure, the assessed pollutants had an inhibitory or stimulatory influence on the growth of single cultures and their consortia. Statistical analysis found positive correlations between the protein content in the matrix and the biofilm biomass of Rhodotorula mucilaginosa and consortia in CP and FH media, respectively. The proteolytic activity of Candida utilis was very pronounced in media with MF and CN. The best alkaline phosphatase activity (ALP) was achieved in the CN medium of R. mucilaginosa. Acid invertase activity was the highest in the FM and CP media of Escherichia coli and consortia, respectively, whereas the highest alkaline invertase activity was measured in the MF medium of E. coli. A positive correlation was confirmed between ALP and the biofilm biomass of R. mucilaginosa in CP and CN media, as well as between ALP and the biofilm biomass of Penicillium expansum in FM medium. The findings provide novel insights into the extracellular hydrolytic activity of the investigated microbial strains in the presence of auto paints, as well as a good platform for subsequent research into comprehensive biofilm profiling using modern methodologies.
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Affiliation(s)
- Violeta D. Jakovljević
- Department for Science and Mathematics, State University of Novi Pazar, Vuka Karadžića 9, 36300 Novi Pazar, Serbia
- Corresponding author at: Department of Science and Mathematics, State University of Novi Pazar, Vuka Karadžića 9, 36300 Novi Pazar, Serbia.
| | - Ivana D. Radojević
- Institute for Biology and Ecology, University of Kragujevac, Radoja Domanovića 12, 34000 Kragujevac, Serbia
| | - Sandra M. Grujić
- Institute for Biology and Ecology, University of Kragujevac, Radoja Domanovića 12, 34000 Kragujevac, Serbia
| | - Aleksandar M. Ostojić
- Institute for Biology and Ecology, University of Kragujevac, Radoja Domanovića 12, 34000 Kragujevac, Serbia
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Carvalho FM, Azevedo A, Ferreira MM, Mergulhão FJM, Gomes LC. Advances on Bacterial and Fungal Biofilms for the Production of Added-Value Compounds. BIOLOGY 2022; 11:biology11081126. [PMID: 36009752 PMCID: PMC9405441 DOI: 10.3390/biology11081126] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 07/21/2022] [Accepted: 07/22/2022] [Indexed: 11/24/2022]
Abstract
Simple Summary The production of bio-based materials, including organic acids, antibiotics, enzymes, ethanol, and hydrogen, is generally done by the cultivation of suspended cells rather than using immobilized cells. However, several studies suggest the application of productive biofilms as a reliable alternative for biocatalysis, with many advantages over suspended-growth systems. This review gives an overview of the breakthrough in the application of biofilm platforms for the sustainable production of valuable compounds, with particular insight into the latest advances in the production of recombinant proteins. Productive biofilms are shown to improve production rates and product yields, demonstrating great potential for industrial applications. Abstract In recent years, abundant research has been performed on biofilms for the production of compounds with biotechnological and industrial relevance. The use of biofilm platforms has been seen as a compelling approach to producing fine and bulk chemicals such as organic acids, alcohols, and solvents. However, the production of recombinant proteins using this system is still scarce. Biofilm reactors are known to have higher biomass density, operational stability, and potential for long-term operation than suspended cell reactors. In addition, there is an increasing demand to harness industrial and agricultural wastes and biorefinery residues to improve process sustainability and reduce production costs. The synthesis of recombinant proteins and other high-value compounds is mainly achieved using suspended cultures of bacteria, yeasts, and fungi. This review discusses the use of biofilm reactors for the production of recombinant proteins and other added-value compounds using bacteria and fungi.
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Affiliation(s)
- Fábio M. Carvalho
- LEPABE—Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal; (F.M.C.); (A.A.); (M.M.F.); (F.J.M.M.)
- ALiCE—Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
| | - Ana Azevedo
- LEPABE—Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal; (F.M.C.); (A.A.); (M.M.F.); (F.J.M.M.)
- ALiCE—Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
| | - Marta M. Ferreira
- LEPABE—Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal; (F.M.C.); (A.A.); (M.M.F.); (F.J.M.M.)
- ALiCE—Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
| | - Filipe J. M. Mergulhão
- LEPABE—Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal; (F.M.C.); (A.A.); (M.M.F.); (F.J.M.M.)
- ALiCE—Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
| | - Luciana C. Gomes
- LEPABE—Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal; (F.M.C.); (A.A.); (M.M.F.); (F.J.M.M.)
- ALiCE—Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
- Correspondence:
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Special Issue: Biofilm Composition and Applications. COATINGS 2022. [DOI: 10.3390/coatings12071026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
Abstract
Biofilms can be formed on both biotic and abiotic surfaces, including on living tissues, indwelling medical devices, industrial or portable water system piping, and natural aquatic systems [...]
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Maqsood Q, Hussain N, Mumtaz M, Bilal M, Iqbal HMN. Novel strategies and advancement in reducing heavy metals from the contaminated environment. Arch Microbiol 2022; 204:478. [PMID: 35831495 DOI: 10.1007/s00203-022-03087-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Accepted: 06/20/2022] [Indexed: 11/27/2022]
Abstract
The most contemporary ecological issues are the dumping of unprocessed factories' effluent. As a result, there is an increasing demand for creative, practical, environmentally acceptable, and inexpensive methodologies to remediate inorganic metals (Hg, Cr, Pb, and Cd) liquidated into the atmosphere, protecting ecosystems. Latest innovations in biological metals have driven natural treatment as a viable substitute for traditional approaches in this area. To eliminate pesticide remains from soil/water sites, technologies such as oxidation, burning, adsorption, and microbial degradation have been established. Bioremediation is a more cost-effective and ecologically responsible means of removing heavy metals than conventional alternatives. As a result, microorganisms have emerged as a necessary component of methyl breakdown and detoxification via metabolic reactions and hereditary characteristics. The utmost operative variant for confiscating substantial metals commencing contaminated soil was A. niger, which had a maximum bioaccumulation efficiency of 98% (Cd) and 43% (Cr). Biosensor bacteria are both environmentally sustainable and cost-effective. As a result, microbes have a range of metal absorption processes that allow them to have higher metal biosorption capabilities. Additionally, the biosorption potential of bacterium, fungus, biofilm, and algae, inherently handled microorganisms that immobilized microbial cells for the elimination of heavy metals, was reviewed in this study. Furthermore, we discuss some of the challenges and opportunities associated with producing effective heavy metal removal techniques, such as those that employ different types of nanoparticles.
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Affiliation(s)
- Quratulain Maqsood
- Centre for Applied Molecular Biology, University of the Punjab, Lahore, Pakistan
| | - Nazim Hussain
- Centre for Applied Molecular Biology, University of the Punjab, Lahore, Pakistan
| | - Mehvish Mumtaz
- Centre for Applied Molecular Biology, University of the Punjab, Lahore, Pakistan
| | - Muhammad Bilal
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huai'an, 223003, China.
| | - Hafiz M N Iqbal
- Tecnologico de Monterrey, School of Engineering and Sciences, 64849, Monterrey, Mexico.
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Qin Z, Zhao Z, Xia L, Ohore OE. Research trends and hotspots of aquatic biofilms in freshwater environment during the last three decades: a critical review and bibliometric analysis. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:47915-47930. [PMID: 35522418 DOI: 10.1007/s11356-022-20238-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Accepted: 04/09/2022] [Indexed: 06/14/2023]
Abstract
Freshwater periphytic biofilms (FPBs), existing widely in various aquatic environments, have attracted extensive attention for many years. In the present study, a bibliometric analysis based on Web of Science Core Collection (WoSCC) was used to understand the research progress, trends, and hot topics of FPBs qualitatively and quantitatively. The results indicated that publications on FPBs have increased from 1991 to 2020 rapidly, and researchers have focused more on the areas of environmental sciences, microbiology, and marine freshwater biology. The most influential countries were mainly the USA, Spain, France, and Germany. Cooperation network analysis reflected that the USA and its affiliated institutions played crucial roles in the research of FPB cooperation, but the collaboration between core author groups still fell short. Based on the analysis of top 20 high-cited FPB documents over the last 30 years, research hotspots mainly included micro-observation and assembly mechanisms of FPBs; interactions of FPBs and pollutants including heavy metals, antibiotic resistance genes, pathogens, organic pollutants, and nanoparticles; and the role of FPBs for biogeochemical cycling, especially nitrogen cycling. Additionally, future research directions were proposed. Overall, this study provides a comprehensive and systematic overview of FPBs, which is useful for research development and researchers who are interested in this area.
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Affiliation(s)
- Zhirui Qin
- Key Laboratory of Integrated Regulation and Resource Development On Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, China
| | - Zhenhua Zhao
- Key Laboratory of Integrated Regulation and Resource Development On Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, China.
- Department of Plant, Soil, and Microbial Sciences, Michigan State University, East Lansing, MI, 48824, USA.
| | - Liling Xia
- Nanjing Institute of Industry Technology, Nanjing, 210016, China
| | - Okugbe Ebiotubo Ohore
- Institute of Marine Sciences and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou, 515063, China
- Organization of African Academic Doctors, Off Kamiti Road, P.O. Box 25305-00100, Nairobi, Kenya
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Sonawane JM, Rai AK, Sharma M, Tripathi M, Prasad R. Microbial biofilms: Recent advances and progress in environmental bioremediation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 824:153843. [PMID: 35176385 DOI: 10.1016/j.scitotenv.2022.153843] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 01/15/2022] [Accepted: 02/09/2022] [Indexed: 05/21/2023]
Abstract
Microbial biofilms are formed by adherence of the bacteria through their secreted polymer matrices. The major constituents of the polymer matrices are extracellular DNAs, proteins, polysaccharides. Biofilms have exhibited a promising role in the area of bioremediation. These activities can be further improved by tuning the parameters like quorum sensing, characteristics of the adhesion surface, and other environmental factors. Organic pollutants have created a global concern because of their long-term toxicity on human, marine, and animal life. These contaminants are not easily degradable and continue to prevail in the environment for an extended period. Biofilms are being used for the remediation of different pollutants, among which organic pollutants have been of significance. The bioremediation of organic contaminants using biofilms is an eco-friendly, cheap, and green process. However, the development of this technology demands knowledge on the mechanism of action of the microbes to form the biofilm, types of specific bacteria or fungi responsible for the degradation of a particular organic compound, and the mechanistic role of the biofilm in the degradation of the pollutants. This review puts forth a comprehensive summary of the role of microbial biofilms in the bioremediation of different environment-threatening organic pollutants.
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Affiliation(s)
- Jayesh M Sonawane
- Department of Chemistry, Alexandre-Vachon Pavilion, Laval University, Quebec G1V 0A6, Canada
| | - Ashutosh Kumar Rai
- Department of Biochemistry, College of Medicine, Imam Abdulrahman Bin Faisal University, Dammam 31441, Saudi Arabia
| | - Minaxi Sharma
- Department of Applied Biology, University of Science and Technology, Meghalaya, 793101, India
| | - Manikant Tripathi
- Biotechnology Program, Dr. Rammanohar Lohia Avadh University, Ayodhya 224001, Uttar Pradesh, India
| | - Ram Prasad
- Department of Botany, Mahatma Gandhi Central University, Motihari 845401, Bihar, India.
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Barcoto MO, Rodrigues A. Lessons From Insect Fungiculture: From Microbial Ecology to Plastics Degradation. Front Microbiol 2022; 13:812143. [PMID: 35685924 PMCID: PMC9171207 DOI: 10.3389/fmicb.2022.812143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 03/15/2022] [Indexed: 11/13/2022] Open
Abstract
Anthropogenic activities have extensively transformed the biosphere by extracting and disposing of resources, crossing boundaries of planetary threat while causing a global crisis of waste overload. Despite fundamental differences regarding structure and recalcitrance, lignocellulose and plastic polymers share physical-chemical properties to some extent, that include carbon skeletons with similar chemical bonds, hydrophobic properties, amorphous and crystalline regions. Microbial strategies for metabolizing recalcitrant polymers have been selected and optimized through evolution, thus understanding natural processes for lignocellulose modification could aid the challenge of dealing with the recalcitrant human-made polymers spread worldwide. We propose to look for inspiration in the charismatic fungal-growing insects to understand multipartite degradation of plant polymers. Independently evolved in diverse insect lineages, fungiculture embraces passive or active fungal cultivation for food, protection, and structural purposes. We consider there is much to learn from these symbioses, in special from the community-level degradation of recalcitrant biomass and defensive metabolites. Microbial plant-degrading systems at the core of insect fungicultures could be promising candidates for degrading synthetic plastics. Here, we first compare the degradation of lignocellulose and plastic polymers, with emphasis in the overlapping microbial players and enzymatic activities between these processes. Second, we review the literature on diverse insect fungiculture systems, focusing on features that, while supporting insects' ecology and evolution, could also be applied in biotechnological processes. Third, taking lessons from these microbial communities, we suggest multidisciplinary strategies to identify microbial degraders, degrading enzymes and pathways, as well as microbial interactions and interdependencies. Spanning from multiomics to spectroscopy, microscopy, stable isotopes probing, enrichment microcosmos, and synthetic communities, these strategies would allow for a systemic understanding of the fungiculture ecology, driving to application possibilities. Detailing how the metabolic landscape is entangled to achieve ecological success could inspire sustainable efforts for mitigating the current environmental crisis.
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Affiliation(s)
- Mariana O. Barcoto
- Center for the Study of Social Insects, São Paulo State University (UNESP), Rio Claro, Brazil
- Department of General and Applied Biology, São Paulo State University (UNESP), Rio Claro, Brazil
| | - Andre Rodrigues
- Center for the Study of Social Insects, São Paulo State University (UNESP), Rio Claro, Brazil
- Department of General and Applied Biology, São Paulo State University (UNESP), Rio Claro, Brazil
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Bustos E, Sandoval-González A, Martínez-Sánchez C. Detection and Treatment of Persistent Pollutants in Water: General Review of Pharmaceutical Products. ChemElectroChem 2022. [DOI: 10.1002/celc.202200188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Erika Bustos
- Centro de Investigacion y Desarrollo Tecnologico en Electroquimica SC Science Centro de Investigación y Desarrollo Tecnológico en Electroq76703México 76703 Pedro Escobedo MEXICO
| | - Antonia Sandoval-González
- Centro de Investigación y Desarrollo Tecnológico en Electroquímica SC: Centro de Investigacion y Desarrollo Tecnologico en Electroquimica SC Science Parque Tecnológico Querétaro s/nSanfandila 76703 Pedro Escobedo MEXICO
| | - Carolina Martínez-Sánchez
- Centro de Investigación y Desarrollo Tecnológico en Electroquímica SC: Centro de Investigacion y Desarrollo Tecnologico en Electroquimica SC Science Parque Tecnológico Querétaro s/nSanfandila 76703 Pedro Escobedo MEXICO
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Ortúzar M, Esterhuizen M, Olicón-Hernández DR, González-López J, Aranda E. Pharmaceutical Pollution in Aquatic Environments: A Concise Review of Environmental Impacts and Bioremediation Systems. Front Microbiol 2022; 13:869332. [PMID: 35558129 PMCID: PMC9087044 DOI: 10.3389/fmicb.2022.869332] [Citation(s) in RCA: 42] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Accepted: 03/30/2022] [Indexed: 11/13/2022] Open
Abstract
The presence of emerging contaminants in the environment, such as pharmaceuticals, is a growing global concern. The excessive use of medication globally, together with the recalcitrance of pharmaceuticals in traditional wastewater treatment systems, has caused these compounds to present a severe environmental problem. In recent years, the increase in their availability, access and use of drugs has caused concentrations in water bodies to rise substantially. Considered as emerging contaminants, pharmaceuticals represent a challenge in the field of environmental remediation; therefore, alternative add-on systems for traditional wastewater treatment plants are continuously being developed to mitigate their impact and reduce their effects on the environment and human health. In this review, we describe the current status and impact of pharmaceutical compounds as emerging contaminants, focusing on their presence in water bodies, and analyzing the development of bioremediation systems, especially mycoremediation, for the removal of these pharmaceutical compounds with a special focus on fungal technologies.
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Affiliation(s)
- Maite Ortúzar
- Department of Microbiology and Genetics, Edificio Departamental, University of Salamanca, Salamanca, Spain
| | - Maranda Esterhuizen
- Ecosystems and Environment Research Programme, Faculty of Biological and Environmental Sciences, Finland and Helsinki Institute of Sustainability Science, University of Helsinki, Helsinki, Finland.,Joint Laboratory of Applied Ecotoxicology, Korea Institute of Science and Technology Europe, Saarbrücken, Germany.,University of Manitoba, Clayton H. Riddell Faculty of Environment, Earth, and Resources, Winnipeg, MB, Canada
| | - Darío Rafael Olicón-Hernández
- Instituto Politécnico Nacional, Departamento de Microbiología, Escuela Nacional de Ciencias Biológicas, Mexico City, Mexico
| | - Jesús González-López
- Environmental Microbiology Group, Institute of Water Research, University of Granada, Granada, Spain.,Department of Microbiology, Faculty of Pharmacy, University of Granada, Granada, Spain
| | - Elisabet Aranda
- Environmental Microbiology Group, Institute of Water Research, University of Granada, Granada, Spain.,Department of Microbiology, Faculty of Pharmacy, University of Granada, Granada, Spain
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Mishra S, Huang Y, Li J, Wu X, Zhou Z, Lei Q, Bhatt P, Chen S. Biofilm-mediated bioremediation is a powerful tool for the removal of environmental pollutants. CHEMOSPHERE 2022; 294:133609. [PMID: 35051518 DOI: 10.1016/j.chemosphere.2022.133609] [Citation(s) in RCA: 55] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 01/09/2022] [Accepted: 01/11/2022] [Indexed: 06/14/2023]
Abstract
Biofilm-mediated bioremediation is an attractive approach for the elimination of environmental pollutants, because of its wide adaptability, biomass, and excellent capacity to absorb, immobilize, or degrade contaminants. Biofilms are assemblages of individual or mixed microbial cells adhering to a living or non-living surface in an aqueous environment. Biofilm-forming microorganisms have excellent survival under exposure to harsh environmental stressors, can compete for nutrients, exhibit greater tolerance to pollutants compared to free-floating planktonic cells, and provide a protective environment for cells. Biofilm communities are thus capable of sorption and metabolization of organic pollutants and heavy metals through a well-controlled expression pattern of genes governed by quorum sensing. The involvement of quorum sensing and chemotaxis in biofilms can enhance the bioremediation kinetics with the help of signaling molecules, the transfer of genetic material, and metabolites. This review provides in-depth knowledge of the process of biofilm formation in microorganisms, their regulatory mechanisms of interaction, and their importance and application as powerful bioremediation agents in the biodegradation of environmental pollutants, including hydrocarbons, pesticides, and heavy metals.
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Affiliation(s)
- Sandhya Mishra
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou, 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
| | - Yaohua Huang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou, 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
| | - Jiayi Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou, 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
| | - Xiaozhen Wu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou, 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
| | - Zhe Zhou
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou, 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
| | - Qiqi Lei
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou, 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
| | - Pankaj Bhatt
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou, 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
| | - Shaohua Chen
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou, 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China.
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Haripriyan U, Gopinath KP, Arun J, Govarthanan M. Bioremediation of organic pollutants: a mini review on current and critical strategies for wastewater treatment. Arch Microbiol 2022; 204:286. [PMID: 35478273 DOI: 10.1007/s00203-022-02907-9] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 03/31/2022] [Accepted: 04/06/2022] [Indexed: 11/25/2022]
Abstract
The release and prevalence of organic pollutants in an aqueous environment due to industrial discharges, agricultural operations, or inappropriate waste disposal is a huge threat to attaining sustainable development. As a result, wastewater treatment has attained a huge scope as it is evident from the number of articles published in recent years. Among the various techniques, bioremediation is one of the economical and eco-friendly means of wastewater treatment for the removal of organic pollutants. Microbial community and microalgae are the front runners of this process as they result in treated water and sludge or biomass formation. This mini review put forwards the types of organic pollutants and the bioremediation strategies using microbes and micro-algae, the role of genetically engineered microbes on the bio-remediation of organic pollutants and the recent applications of Artificial Intelligence (AI) techniques that have been implemented for improving the efficiency of the methods. The gap between practicability and applicability of the bioremediation process was also identified in this review. In addition, the economics and future research needs are discussed as outcomes.
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Affiliation(s)
- U Haripriyan
- Department of Chemical Engineering, A. C. Tech Campus, Anna University, Chennai, 600025, India
- Department of Chemical Engineering, Swinburne University of Technology, Sarawak Campus, 93350, Kuching, Malaysia
| | - K P Gopinath
- Department of Sustainable Engineering, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, 602105, India
| | - J Arun
- Centre for Waste Management, Sathyabama Institute of Science and Technology, Chennai, 600119, India.
| | - Muthusamy Govarthanan
- Department of Environmental Engineering, Kyungpook National University, 41566, Daegu, Republic of Korea.
- Department of Biomaterials, Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences, Chennai, 600 077, India.
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45
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Krsmanovic M, Ali H, Biswas D, Ghosh R, Dickerson AK. Fouling of mammalian hair fibres exposed to a titanium dioxide colloidal suspension. J R Soc Interface 2022; 19:20210904. [PMID: 35414217 PMCID: PMC9006035 DOI: 10.1098/rsif.2021.0904] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Fouling of surfaces in prolonged contact with liquid often leads to detrimental alteration of material properties and performance. A wide range of factors which include mass transport, surface properties and surface interactions dictate whether foulants are able to adhere to a surface. Passive means of foulant rejection, such as the microscopic patterns, have been known to develop in nature. In this work, we investigate the anti-fouling behaviour of animal fur and its apparent passive resistance to fouling. We compare the fouling performance of several categories of natural and manufactured fibres, and present correlations between contamination susceptibility and physio-mechanical properties of the fibre and its environment. Lastly, we present a correlation between the fouling intensity of a fibre and the cumulative impact of multiple interacting factors declared in the form of a dimensionless group. Artificial and natural hair strands exhibit comparable anti-fouling behaviour in flow, however, the absence of flow improves the performance of some artificial fibres. Among the plethora of factors affecting the fouling of fur hair, the dimensionless groups we present herein provide the best demarcation between fibres of different origin.
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Affiliation(s)
- Milos Krsmanovic
- Department of Mechanical and Aerospace Engineering, University of Central Florida, Orlando, FL, USA
| | - Hessein Ali
- Department of Mechanical Engineering, Union College, Schenectady, NY, USA
| | - Dipankar Biswas
- School of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - Ranajay Ghosh
- Department of Mechanical and Aerospace Engineering, University of Central Florida, Orlando, FL, USA
| | - Andrew K Dickerson
- Department of Mechanical, Aerospace, and Biomedical Engineering, University of Tennessee, Knoxville, TN, USA
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Kalčíková G, Bundschuh M. Aquatic Biofilms-Sink or Source of Microplastics? A Critical Reflection on Current Knowledge. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2022; 41:838-843. [PMID: 34407241 DOI: 10.1002/etc.5195] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 05/14/2021] [Accepted: 08/12/2021] [Indexed: 06/13/2023]
Abstract
The scientific understanding regarding sources, occurrence, and effects of microplastics in the aquatic environment has advanced rapidly, leaving some meaningful knowledge gaps virtually untouched. One of them is the interactions of microplastics and biofilms, microbial communities ubiquitous in aquatic ecosystems and fundamental for a range of ecosystem-level processes. It is evident that biofilms can quickly develop on the microplastic surface and consequently change particle properties and, as such, its fate and ecotoxicity. Moreover, microplastics interact with ubiquitous biofilms that are developed on any surfaces in aquatic ecosystems. Although the knowledge about these interactions is at best limited, it is expected that microplastics attach to the water-biofilm interface or penetrate the biofilm matrix. Microplastics can accumulate and ab- or adsorb to those biofilms where they are subjected to transformation processes such as fragmentation. Thus, biofilms may function as a sink. Changes in environmental conditions may, however, stress biofilms initiating their dieback and microplastic release, which could turn biofilms into a source of microplastics. We argue that the accumulation and release dynamics are a largely overlooked but potentially important piece to the puzzle that is a comprehensive understanding of microplastic fate in the environment and thus under the influence of multiple interacting factors. Environ Toxicol Chem 2022;41:838-843. © 2021 The Authors. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC.
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Affiliation(s)
- Gabriela Kalčíková
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Ljubljana, Slovenia
| | - Mirco Bundschuh
- iES landau, Institute for Environmental Sciences, University of Koblenz-Landau, Landau, Germany
- Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, Uppsala, Sweden
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Chattopadhyay I, J RB, Usman TMM, Varjani S. Exploring the role of microbial biofilm for industrial effluents treatment. Bioengineered 2022; 13:6420-6440. [PMID: 35227160 PMCID: PMC8974063 DOI: 10.1080/21655979.2022.2044250] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Biofilm formation on biotic or abiotic surfaces is caused by microbial cells of a single or heterogeneous species. Biofilm protects microbes from stressful environmental conditions, toxic action of chemicals, and antimicrobial substances. Quorum sensing (QS) is the generation of autoinducers (AIs) by bacteria in a biofilm to communicate with one other. QS is responsible for the growth of biofilm, synthesis of exopolysaccharides (EPS), and bioremediation of environmental pollutants. EPS is used for wastewater treatment due to its three-dimensional matrix which is composed of proteins, polysaccharides, humic-like substances, and nucleic acids. Autoinducers mediate significantly the degradation of environmental pollutants. Acyl-homoserine lactone (AHL) producing bacteria as well as quorum quenching enzyme or bacteria can effectively improve the performance of wastewater treatment. Biofilms-based reactors due to their economic and ecofriendly nature are used for the treatment of industrial wastewaters. Electrodes coated with electro-active biofilm (EAB) which are obtained from sewage sludge, activated sludge, or industrial and domestic effluents are getting popularity in bioremediation. Microbial fuel cells are involved in wastewater treatment and production of energy from wastewater. Synthetic biological systems such as genome editing by CRISPR-Cas can be used for the advanced bioremediation process through modification of metabolic pathways in quorum sensing within microbial communities. This narrative review discusses the impacts of QS regulatory approaches on biofilm formation, extracellular polymeric substance synthesis, and role of microbial community in bioremediation of pollutants from industrial effluents.
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Affiliation(s)
| | - Rajesh Banu J
- Department of Life Sciences, Central University of Tamil Nadu, Thiruvarur, India
| | - T M Mohamed Usman
- Department of Civil Engineering, PET Engineering College, Vallioor, Tirunelveli, India
| | - Sunita Varjani
- Paryavaran Bhavan, Gujarat Pollution Control Board, Gandhinagar, India
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Li YP, You LX, Yang XJ, Yu YS, Zhang HT, Yang B, Chorover J, Feng RW, Rensing C. Extrapolymeric substances (EPS) in Mucilaginibacter rubeus P2 displayed efficient metal(loid) bio-adsorption and production was induced by copper and zinc. CHEMOSPHERE 2022; 291:132712. [PMID: 34715104 DOI: 10.1016/j.chemosphere.2021.132712] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 10/18/2021] [Accepted: 10/24/2021] [Indexed: 06/13/2023]
Abstract
Strains of the genus Mucilaginibacter, belonging to the phylum Bacteroidetes, have been noted for exhibiting high genome plasticity and for the vigorous production of extracellular polymeric substances (EPS). Here we analyzed the composition and properties of EPS generated by M. rubeus P2, isolated from a gold-copper mine and exhibiting extremely high resistance to multiple heavy metals. Production of EPS increased significantly upon exposure to elevated concentrations of Cu(II) and Zn(II), but not Au(III). In addition, the EPS produced by M. rubeus P2 displayed extremely high bio-adsorption of As(III), Cu(II) and Au(III), but not of Zn(II). Moreover, EPS production in Mucilaginibacter rubeus P2 exposed to 1 mM of Cu(II) was 8.5 times higher than EPS production in the same strain without metal (loid)-exposure. These findings constitute the basis for a future use of these EPS-overproducing bacteria in bioremediation of heavy metal contaminated environments. The functional groups, especially -SH, CO, and N-H/C-N in the fingerprint zone of glutathione (GSH) and polysaccharides-like components of EPS, were the main components of EPS involved in both Zn(II) and Cu(II) binding and removal. Around 31.22% and 5.74% of Cu(II)-treated EPS was shown to exist as (CO) structures and these structures were converted into C-OH and O-C-O upon exposure to Cu(II), respectively. In contrast, (C-OH/C-O-C/P-O-C) groups in EPS were observed to be positively correlated to increasing concentrations of Zn(II) in strain P2. Furthermore, the complete genome of M. rubeus P2 helped us to identify 350 genes involved in carbohydrate metabolism, some of which are predicted to be involved in EPS production and modification. This work describes the first detailed biochemical and biophysical analysis of EPS from any strain of Mucilaginibacter with unique heavy metal binding properties. The results will be useful for a better understanding of how microorganisms such as M. rubeus P2 adapt to heavy metal polluted environments and how this knowledge can potentially be harnessed in biotechnological applications such as industrial waste water purification, bioremediation of heavy metal contaminated soil and beneficial plant microbe interactions. The toolbox provided in this paper will provide a valuable basis for future studies.
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Affiliation(s)
- Yuan Ping Li
- Institute of Environmental Microbiology, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, China
| | - Le Xing You
- Institute of Environmental Microbiology, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, China
| | - Xiao Jun Yang
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, China
| | - Yan Shuang Yu
- Institute of Environmental Microbiology, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, China
| | - Hai Ting Zhang
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, China
| | - Bing Yang
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, China
| | - Jon Chorover
- Department of Environmental Science, University of Arizona, Tucson, AZ, 85719, USA
| | - Ren Wei Feng
- Institute of Environmental Microbiology, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, China.
| | - Christopher Rensing
- Institute of Environmental Microbiology, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, China.
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Moni R, Noman Khan AA, Islam Z, Zohora US, Rahman MS. Biofilm Fermentation: A Propitious Method for the Production of Protease Enzyme by Bacillus subtilis RB14. Ind Biotechnol (New Rochelle N Y) 2022. [DOI: 10.1089/ind.2021.0016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Ripa Moni
- Department of Biotechnology and Genetic Engineering, Faculty of Biological Sciences, Jahangirnagar University, Savar, Dhaka, Bangladesh
| | - Abdullah Al Noman Khan
- Department of Biotechnology and Genetic Engineering, Faculty of Biological Sciences, Jahangirnagar University, Savar, Dhaka, Bangladesh
| | - Zahidul Islam
- Department of Biotechnology and Genetic Engineering, Faculty of Biological Sciences, Jahangirnagar University, Savar, Dhaka, Bangladesh
| | - Umme Salma Zohora
- Department of Biotechnology and Genetic Engineering, Faculty of Biological Sciences, Jahangirnagar University, Savar, Dhaka, Bangladesh
| | - Mohammad Shahedur Rahman
- Department of Biotechnology and Genetic Engineering, Faculty of Biological Sciences, Jahangirnagar University, Savar, Dhaka, Bangladesh
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Perez LJ, Parashar R, Plymale A, Scheibe TD. Contributions of biofilm-induced flow heterogeneities to solute retention and anomalous transport features in porous media. WATER RESEARCH 2022; 209:117896. [PMID: 34922103 DOI: 10.1016/j.watres.2021.117896] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 11/13/2021] [Accepted: 11/22/2021] [Indexed: 06/14/2023]
Abstract
Microbial biofilms are ubiquitous within porous media and the dynamics of their growth influence surface and subsurface flow patterns which impacts the physical properties of porous media and large-scale transport of solutes. A two-dimensional pore-scale numerical model was used to evaluate the impact of biofilm-induced flow heterogeneities on conservative transport. Our study integrates experimental biofilm images of Paenibacillus 300A strain in a microfluidic device packed with cylindrical grains in a hexagonal distribution, with mathematical modeling. Biofilm is represented as a synthetic porous structure with locally varying physical properties that honors the impact of biofilm on the porous medium. We find that biofilm plays a major role in shaping the observed conservative transport dynamics by enhancing anomalous characteristics. More specifically, when biofilm is present, the pore structure in our geometry becomes more spatially correlated. We observe intermittent behavior in the Lagrangian velocities that switches between fast transport periods and long trapping events. Our results suggest that intermittency enhances solute spreading in breakthrough curves which exhibit extreme anomalous slope at intermediate times and very marked late solute arrival due to solute retention. The efficiency of solute retention by the biofilm is controlled by a transport regime which can extend the tailing in the concentration breakthrough curves. These results indicate that solute retention by the biofilm exerts a strong control on conservative solute transport at pore-scale, a role that to date has not received enough attention.
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Affiliation(s)
| | | | - Andrew Plymale
- Pacific Northwest National Laboratory, Richland, WA, USA
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