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Qiu Q, Li H, Sun X, Tian K, Gu J, Zhang F, Zhou D, Zhang X, Huo H. Integrating genomics, molecular docking, and protein expression to explore new perspectives on polystyrene biodegradation. JOURNAL OF HAZARDOUS MATERIALS 2024; 476:135031. [PMID: 38943889 DOI: 10.1016/j.jhazmat.2024.135031] [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: 03/25/2024] [Revised: 06/01/2024] [Accepted: 06/23/2024] [Indexed: 07/01/2024]
Abstract
Faced with the escalating challenge of global plastic pollution, this study specifically addresses the research gap in the biodegradation of polystyrene (PS). A PS-degrading bacterial strain was isolated from the gut of Tenebrio molitor, and genomics, molecular docking, and proteomics were employed to thoroughly investigate the biodegradation mechanisms of Pseudomonas putida H-01 against PS. Using scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (ATR-FTIR), and contact angle analysis, significant morphological and structural changes in the PS films under the influence of the H-01 strain were observed. The study revealed several potential degradation genes and ten enzymes that were specifically upregulated in the PS degradation environment. Additionally, a novel protein with laccase-like activity, LacQ1, was purified from this strain for the first time, and its crucial role in the PS degradation process was confirmed. Through molecular docking and molecular dynamics (MD) simulations, the interactions between the enzymes and PS were detailed, elucidating the binding and catalytic mechanisms of the degradative enzymes with the substrate. These findings have deepened our understanding of PS degradation.
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Affiliation(s)
- Qing Qiu
- School of Environment, Northeast Normal University, No. 2555 Jingyue Avenue, Changchun City, Jilin Province, China
| | - Han Li
- School of Environment, Northeast Normal University, No. 2555 Jingyue Avenue, Changchun City, Jilin Province, China
| | - Xuejian Sun
- School of Environment, Northeast Normal University, No. 2555 Jingyue Avenue, Changchun City, Jilin Province, China
| | - Kejian Tian
- School of Environment, Northeast Normal University, No. 2555 Jingyue Avenue, Changchun City, Jilin Province, China
| | - Jinming Gu
- School of Environment, Northeast Normal University, No. 2555 Jingyue Avenue, Changchun City, Jilin Province, China
| | - Fenglin Zhang
- School of Environment, Northeast Normal University, No. 2555 Jingyue Avenue, Changchun City, Jilin Province, China
| | - Dandan Zhou
- School of Environment, Northeast Normal University, No. 2555 Jingyue Avenue, Changchun City, Jilin Province, China; Engineering Research Center of Low-Carbon Treatment and Green Development of Polluted Water in Northeast China, Ministry of Education, Northeast Normal University, Changchun 130117, China
| | - Xinwen Zhang
- College of Pharmacy, Hainan Vocational University of Science and Technology, Haikou 571126, China.
| | - Hongliang Huo
- School of Environment, Northeast Normal University, No. 2555 Jingyue Avenue, Changchun City, Jilin Province, China; Engineering Research Center of Low-Carbon Treatment and Green Development of Polluted Water in Northeast China, Ministry of Education, Northeast Normal University, Changchun 130117, China.
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Mohamed DFMS, Tarafdar A, Lee SY, Oh HB, Kwon JH. Assessment of biodegradation and toxicity of alternative plasticizer di(2-ethylhexyl) terephthalate: Impacts on microbial biofilms, metabolism, and reactive oxygen species-mediated stress response. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 355:124217. [PMID: 38797346 DOI: 10.1016/j.envpol.2024.124217] [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: 01/21/2024] [Revised: 05/04/2024] [Accepted: 05/23/2024] [Indexed: 05/29/2024]
Abstract
Although di(2-ethylhexyl) terephthalate (DOTP) is being widely adopted as a non-phthalate plasticizer, existing research primarily focuses on human and rat toxicity. This leaves a significant gap in our understanding of their impact on microbial communities. This study assessed the biodegradation and toxicity of DOTP on microbes, focusing on its impact on biofilms and microbial metabolism using Rhodococcus ruber as a representative bacterial strain. DOTP is commonly found in mass fractions between 0.6 and 20% v/v in various soft plastic products. This study used polyvinyl chloride films (PVC) with varying DOTP concentrations (range 1-10% v/v) as a surface for analysis of biofilm growth. Cell viability and bacterial stress responses were tested using LIVE/DEAD™ BacLight™ Bacterial Viability Kit and by the detection of reactive oxygen species using CellROX™ Green Reagent, respectively. An increase in the volume of dead cells (in the plastisphere biofilm) was observed with increasing DOTP concentrations in experiments using PVC films, indicating the potential negative impact of DOTP on microbial communities. Even at a relatively low concentration of DOTP (1%), signs of stress in the microbes were noticed, while concentrations above 5% compromised their ability to survive. This research provides a new understanding of the environmental impacts of alternative plasticizers, prompting the need for additional research into their wider effects on both the environment and human health.
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Affiliation(s)
- Dana Fahad M S Mohamed
- Division of Environmental Science and Ecological Engineering, Korea University, Seongbuk-gu, Seoul, 02841, Republic of Korea
| | - Abhrajyoti Tarafdar
- Division of Environmental Science and Ecological Engineering, Korea University, Seongbuk-gu, Seoul, 02841, Republic of Korea; School of Food Science and Environmental Health, Technological University Dublin, City Campus, Grangegorman, Dublin, D07ADY7, Ireland
| | - So Yeon Lee
- Department of Chemistry, Sogang University, Seoul, 04107, Republic of Korea
| | - Han Bin Oh
- Department of Chemistry, Sogang University, Seoul, 04107, Republic of Korea
| | - Jung-Hwan Kwon
- Division of Environmental Science and Ecological Engineering, Korea University, Seongbuk-gu, Seoul, 02841, Republic of Korea.
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3
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Matyakubov B, Lee TJ. Optimizing polystyrene degradation, microbial community and metabolite analysis of intestinal flora of yellow mealworms, Tenebrio molitor. BIORESOURCE TECHNOLOGY 2024; 403:130895. [PMID: 38801953 DOI: 10.1016/j.biortech.2024.130895] [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: 03/13/2024] [Revised: 05/22/2024] [Accepted: 05/23/2024] [Indexed: 05/29/2024]
Abstract
This study explored a direct feeding of expanded polystyrene as the sole diet for breeding Tenebrio molitor larvae. Temperature and relative humidity were manipulated to evaluate polystyrene biodegradation efficiency, survival rate, and formation of micro-polystyrene residue. Efficient conditions were at temperature of 25 °C with a humidity of 65 ± 5 %. Comparative metabolomic and metabolic-metabolic network analyses was performed for visualizing detailed pathway. Possibility of forming 4 (p)-hydroxyphenylacetic acid from phenylacetic acid with further conversion to 4-methylphenol, 4-hydroxybenzaldehyde, and 4-hydroxybenzoate could be seen as a side chain route for further biodegrading process. Key species identified in the gut of T. molitor larvae included Citrobacter sp., Serratia marcescens, Klebsiella aerogenes, and Klebsiella oxytoca. Pseudomonas aeruginosa was detected only under an anaerobic condition whereas Acinetobacter sp. was present only under an aerobic condition. These results demonstrate the potential to decrease micro-polystyrene by optimizing breeding conditions and biodegradation process of polystyrene.
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Affiliation(s)
- Behzad Matyakubov
- Department of Environmental Engineering, Seoul National University of Science and Technology, 232 Gongneung-ro, Nowon-gu, Seoul 01811, Republic of Korea
| | - Tae-Jin Lee
- Department of Environmental Engineering, Seoul National University of Science and Technology, 232 Gongneung-ro, Nowon-gu, Seoul 01811, Republic of Korea.
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Crystal Thew XE, Lo SC, Ramanan RN, Tey BT, Huy ND, Chien Wei O. Enhancing plastic biodegradation process: strategies and opportunities. Crit Rev Biotechnol 2024; 44:477-494. [PMID: 36788704 DOI: 10.1080/07388551.2023.2170861] [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: 03/25/2022] [Accepted: 01/03/2023] [Indexed: 02/16/2023]
Abstract
Plastic biodegradation has emerged as a sustainable approach and green alternative in handling the ever-increasing accumulation of plastic wastes in the environment. The complete biodegradation of polyethylene terephthalate is one of the most recent breakthroughs in the field of plastic biodegradation. Despite the success, the effective and complete biodegradation of a wide variety of plastics is still far from the practical implementation, and an on-going effort has been mainly devoted to the exploration of novel microorganisms and enzymes for plastic biodegradation. However, alternative strategies which enhance the existing biodegradation process should not be neglected in the continuous advancement of this field. Thus, this review highlights various strategies which have shown to improve the biodegradation of plastics, which include the pretreatment of plastics using UV irradiation, thermal, or chemical treatments to increase the susceptibility of plastics toward microbial action. Alternative pretreatment strategies are also suggested and compared with the existing techniques. Besides, the effects of additives such as pro-oxidants, natural polymers, and surfactants on plastic biodegradation are discussed. In addition, considerations governing the biodegradation performance, such as the formulation of biodegradation medium, cell-free biocatalysis, and physico-chemical properties of plastics, are addressed. Lastly, the challenges and future prospects for the advancement of plastic biodegradation are also highlighted.
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Affiliation(s)
- Xue Er Crystal Thew
- Chemical Engineering Discipline, School of Engineering, Monash University Malaysia, Bandar Sunway, Malaysia
| | - Sewn Cen Lo
- Chemical Engineering Discipline, School of Engineering, Monash University Malaysia, Bandar Sunway, Malaysia
| | | | - Beng Ti Tey
- Chemical Engineering Discipline, School of Engineering, Monash University Malaysia, Bandar Sunway, Malaysia
- Advanced Engineering Platform, Monash University Malaysia, Bandar Sunway, Malaysia
| | - Nguyen Duc Huy
- Institute of Biotechnology, Hue University, Hue, Vietnam
| | - Ooi Chien Wei
- Chemical Engineering Discipline, School of Engineering, Monash University Malaysia, Bandar Sunway, Malaysia
- Advanced Engineering Platform, Monash University Malaysia, Bandar Sunway, Malaysia
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El-Kurdi N, El-Shatoury S, ElBaghdady K, Hammad S, Ghazy M. Biodegradation of polystyrene nanoplastics by Achromobacter xylosoxidans M9 offers a mealworm gut-derived solution for plastic pollution. Arch Microbiol 2024; 206:238. [PMID: 38684545 PMCID: PMC11058615 DOI: 10.1007/s00203-024-03947-z] [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: 01/31/2024] [Revised: 03/24/2024] [Accepted: 03/27/2024] [Indexed: 05/02/2024]
Abstract
Nanoplastics pose significant environmental problems due to their high mobility and increased toxicity. These particles can cause infertility and inflammation in aquatic organisms, disrupt microbial signaling and act as pollutants carrier. Despite extensive studies on their harmful impact on living organisms, the microbial degradation of nanoplastics is still under research. This study investigated the degradation of nanoplastics by isolating bacteria from the gut microbiome of Tenebrio molitor larvae fed various plastic diets. Five bacterial strains capable of degrading polystyrene were identified, with Achromobacter xylosoxidans M9 showing significant nanoplastic degradation abilities. Within 6 days, this strain reduced nanoplastic particle size by 92.3%, as confirmed by SEM and TEM analyses, and altered the chemical composition of the nanoplastics, indicating a potential for enhanced bioremediation strategies. The strain also caused a 7% weight loss in polystyrene film over 30 days, demonstrating its efficiency in degrading nanoplastics faster than polystyrene film. These findings might enhance plastic bioremediation strategies.
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Affiliation(s)
- Najat El-Kurdi
- Biotechnology Program, Basic and Applied Science Institute, Egypt-Japan University of Science and Technology, New Burj Al-Arab, Alexandria, Egypt
- Aquaculture Biotechnology Department, Fish Farming and Technology Institute, Suez Canal University, Ismailia, Egypt
| | - Sahar El-Shatoury
- Microbiology Department, Faculty of Science, Suez Canal University, Ismailia, Egypt.
| | - Khaled ElBaghdady
- Microbiology Department, Faculty of Science, Ain Shams University, Cairo, Egypt
| | - Sherif Hammad
- Medicinal Chemistry Department, PharmD Program, Egypt-Japan University of Science and Technology, New Burj Al-Arab, Alexandria, Egypt
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Helwan University, Ain Helwan, Egypt
| | - Mohamed Ghazy
- Biotechnology Program, Basic and Applied Science Institute, Egypt-Japan University of Science and Technology, New Burj Al-Arab, Alexandria, Egypt
- Biochemistry Department, Faculty of Science, Ain Shams University, Cairo, Egypt
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Zhang Z, Zhang Q, Yang H, Cui L, Qian H. Mining strategies for isolating plastic-degrading microorganisms. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 346:123572. [PMID: 38369095 DOI: 10.1016/j.envpol.2024.123572] [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: 12/27/2023] [Revised: 01/29/2024] [Accepted: 02/13/2024] [Indexed: 02/20/2024]
Abstract
Plastic waste is a growing global pollutant. Plastic degradation by microorganisms has captured attention as an earth-friendly tactic. Although the mechanisms of plastic degradation by bacteria, fungi, and algae have been explored over the past decade, a large knowledge gap still exists regarding the identification, sorting, and cultivation of efficient plastic degraders, primarily because of their uncultivability. Advances in sequencing techniques and bioinformatics have enabled the identification of microbial degraders and related enzymes and genes involved in plastic biodegradation. In this review, we provide an outline of the situation of plastic degradation and summarize the methods for effective microbial identification using multidisciplinary techniques such as multiomics, meta-analysis, and spectroscopy. This review introduces new strategies for controlling plastic pollution in an environmentally friendly manner. Using this information, highly efficient and colonizing plastic degraders can be mined via targeted sorting and cultivation. In addition, based on the recognized rules and plastic degraders, we can perform an in-depth analysis of the associated degradation mechanism, metabolic features, and interactions.
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Affiliation(s)
- Ziyao Zhang
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, PR China
| | - Qi Zhang
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, PR China
| | - Huihui Yang
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, PR China
| | - Li Cui
- Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, PR China
| | - Haifeng Qian
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, PR China.
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Singh P, Lau CSS, Siah SY, Chua KO, Ting ASY. Microbial degradation of low-density polyethylene, polyethylene terephthalate, and polystyrene by novel isolates from plastic-polluted environment. Arch Microbiol 2024; 206:188. [PMID: 38519709 DOI: 10.1007/s00203-024-03895-8] [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: 09/27/2023] [Revised: 02/10/2024] [Accepted: 02/11/2024] [Indexed: 03/25/2024]
Abstract
Biodegradation is an eco-friendly measure to address plastic pollution. This study screened four bacterial isolates that were capable of degrading recalcitrant polymers, i.e., low-density polyethylene, polyethylene terephthalate, and polystyrene. The unique bacterial isolates were obtained from plastic polluted environment. Dermacoccus sp. MR5 (accession no. OP592184) and Corynebacterium sp. MR10 (accession no. OP536169) from Malaysian mangroves and Bacillus sp. BS5 (accession no. OP536168) and Priestia sp. TL1 (accession no. OP536170) from a sanitary landfill. The four isolates showed a gradual increase in the microbial count and the production of laccase and esterase enzymes after 4 weeks of incubation with the polymers (independent experiment set). Bacillus sp. BS5 produced the highest laccase 15.35 ± 0.19 U/mL and showed the highest weight loss i.e., 4.84 ± 0.6% for PS. Fourier transform infrared spectroscopy analysis confirmed the formation of carbonyl and hydroxyl groups as a result of oxidation reactions by enzymes. Liquid chromatography-mass spectrometry analysis showed the oxidation of the polymers to small molecules (alcohol, ethers, and acids) assimilated by the microbes during the degradation. Field emission scanning electron microscopy showed bacterial colonization, biofilm formation, and surface erosion on the polymer surface. The result provided significant insight into enzyme activities and the potential of isolates to target more than one type of polymer for degradation.
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Affiliation(s)
- Pooja Singh
- School of Science, Monash University Malaysia, Jalan Lagoon Selatan, 47500, Bandar Sunway, Selangor, Malaysia
| | - Claudeen Sze Siang Lau
- School of Science, Monash University Malaysia, Jalan Lagoon Selatan, 47500, Bandar Sunway, Selangor, Malaysia
| | - Sze Yin Siah
- School of Science, Monash University Malaysia, Jalan Lagoon Selatan, 47500, Bandar Sunway, Selangor, Malaysia
| | - Kah Ooi Chua
- Centre for Research in Biotechnology for Agriculture (CEBAR), University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Adeline Su Yien Ting
- School of Science, Monash University Malaysia, Jalan Lagoon Selatan, 47500, Bandar Sunway, Selangor, Malaysia.
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da Silva MRF, Souza KS, Motteran F, de Araújo LCA, Singh R, Bhadouria R, de Oliveira MBM. Exploring biodegradative efficiency: a systematic review on the main microplastic-degrading bacteria. Front Microbiol 2024; 15:1360844. [PMID: 38562477 PMCID: PMC10982435 DOI: 10.3389/fmicb.2024.1360844] [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: 12/24/2023] [Accepted: 02/14/2024] [Indexed: 04/04/2024] Open
Abstract
Introduction Microplastics (MPs) are widely distributed in the environment, causing damage to biota and human health. Due to their physicochemical characteristics, they become resistant particles to environmental degradation, leading to their accumulation in large quantities in the terrestrial ecosystem. Thus, there is an urgent need for measures to mitigate such pollution, with biological degradation being a viable alternative, where bacteria play a crucial role, demonstrating high efficiency in degrading various types of MPs. Therefore, the study aimed to identify bacteria with the potential for MP biodegradation and the enzymes produced during the process. Methods The methodology used followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) protocol. Results and Discussion The research yielded 68 eligible studies, highlighting bacteria from the genera Bacillus, Pseudomonas, Stenotrophomonas, and Rhodococcus as the main organisms involved in MP biodegradation. Additionally, enzymes such as hydrolases and alkane hydroxylases were emphasized for their involvement in this process. Thus, the potential of bacterial biodegradation is emphasized as a promising pathway to mitigate the environmental impact of MPs, highlighting the relevance of identifying bacteria with biotechnological potential for large-scale applications in reducing MP pollution.
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Affiliation(s)
| | - Karolayne Silva Souza
- Molecular Biology Laboratory, Department of Biochemistry, Federal University of Pernambuco - UFPE, Recife, PE, Brazil
| | - Fabricio Motteran
- Department of Civil and Environmental Engineering, Federal University of Pernambuco - UFPE, Recife, PE, Brazil
| | | | - Rishikesh Singh
- Amity School of Earth & Environmental Sciences, Amity University Punjab (AUP), Mohali, India
| | - Rahul Bhadouria
- Department of Environmental Studies, Delhi College of Arts and Commerce, University of Delhi, New Delhi, India
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Messer LF, Lee CE, Wattiez R, Matallana-Surget S. Novel functional insights into the microbiome inhabiting marine plastic debris: critical considerations to counteract the challenges of thin biofilms using multi-omics and comparative metaproteomics. MICROBIOME 2024; 12:36. [PMID: 38389111 PMCID: PMC10882806 DOI: 10.1186/s40168-024-01751-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Accepted: 01/03/2024] [Indexed: 02/24/2024]
Abstract
BACKGROUND Microbial functioning on marine plastic surfaces has been poorly documented, especially within cold climates where temperature likely impacts microbial activity and the presence of hydrocarbonoclastic microorganisms. To date, only two studies have used metaproteomics to unravel microbial genotype-phenotype linkages in the marine 'plastisphere', and these have revealed the dominance of photosynthetic microorganisms within warm climates. Advancing the functional representation of the marine plastisphere is vital for the development of specific databases cataloging the functional diversity of the associated microorganisms and their peptide and protein sequences, to fuel biotechnological discoveries. Here, we provide a comprehensive assessment for plastisphere metaproteomics, using multi-omics and data mining on thin plastic biofilms to provide unique insights into plastisphere metabolism. Our robust experimental design assessed DNA/protein co-extraction and cell lysis strategies, proteomics workflows, and diverse protein search databases, to resolve the active plastisphere taxa and their expressed functions from an understudied cold environment. RESULTS For the first time, we demonstrate the predominance and activity of hydrocarbonoclastic genera (Psychrobacter, Flavobacterium, Pseudomonas) within a primarily heterotrophic plastisphere. Correspondingly, oxidative phosphorylation, the citrate cycle, and carbohydrate metabolism were the dominant pathways expressed. Quorum sensing and toxin-associated proteins of Streptomyces were indicative of inter-community interactions. Stress response proteins expressed by Psychrobacter, Planococcus, and Pseudoalteromonas and proteins mediating xenobiotics degradation in Psychrobacter and Pseudoalteromonas suggested phenotypic adaptations to the toxic chemical microenvironment of the plastisphere. Interestingly, a targeted search strategy identified plastic biodegradation enzymes, including polyamidase, hydrolase, and depolymerase, expressed by rare taxa. The expression of virulence factors and mechanisms of antimicrobial resistance suggested pathogenic genera were active, despite representing a minor component of the plastisphere community. CONCLUSION Our study addresses a critical gap in understanding the functioning of the marine plastisphere, contributing new insights into the function and ecology of an emerging and important microbial niche. Our comprehensive multi-omics and comparative metaproteomics experimental design enhances biological interpretations to provide new perspectives on microorganisms of potential biotechnological significance beyond biodegradation and to improve the assessment of the risks associated with microorganisms colonizing marine plastic pollution. Video Abstract.
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Affiliation(s)
- Lauren F Messer
- Division of Biological and Environmental Sciences, Faculty of Natural Sciences, University of Stirling, Stirling, FK9 4LA, Scotland
| | - Charlotte E Lee
- Division of Biological and Environmental Sciences, Faculty of Natural Sciences, University of Stirling, Stirling, FK9 4LA, Scotland
| | - Ruddy Wattiez
- Proteomics and Microbiology Department, University of Mons, Mons, 7000, Belgium
| | - Sabine Matallana-Surget
- Division of Biological and Environmental Sciences, Faculty of Natural Sciences, University of Stirling, Stirling, FK9 4LA, Scotland.
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Wang N, Wang Q, Song S, Sun Z, Zhao A, Ali A, Xu G, Zhong X, Wang F, Xu H. Microplastics drive community dynamics of periphytic protozoan fauna in marine environments. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:13327-13334. [PMID: 38244160 DOI: 10.1007/s11356-024-32054-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 01/14/2024] [Indexed: 01/22/2024]
Abstract
The pollution of microplastics (MPs) to the marine environment has become a widespread focus of attention. To assess MP-induced ecotoxicity on marine ecosystems, periphytic protozoan communities were used as test organisms and exposed to five concentrations of MPs: 0, 1, 5, 25, and 125 mg l-1. Protozoan samples were collected using microscope slides from coastal waters of the Yellow Sea, northern China. A total of 13 protozoan species were identified and represented different tolerance to MP-induced ecotoxicity. Inhibition effects of MPs on the test protozoan communities were clearly shown in terms of both the species richness and individual abundance and followed linear relationships to MP concentrations. The community patterns were driven by MPs and significantly shifted at concentrations over 5 mg l-1. Our findings demonstrated that MPs may induce the community-level ecotoxic response of periphytic protozoan fauna and followed significant community dynamics. Thus, it is suggested that periphytic protozoan fauna may be used as useful community-based test model organisms for evaluating MP-induced ecotoxicity in marine environments.
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Affiliation(s)
- Ning Wang
- Laboratory of Microbial Ecology, Ocean University of China, Qingdao, 266003, China
| | - Qiaoling Wang
- Laboratory of Microbial Ecology, Ocean University of China, Qingdao, 266003, China
| | - Suihan Song
- Laboratory of Microbial Ecology, Ocean University of China, Qingdao, 266003, China
| | - Zhiyi Sun
- Laboratory of Microbial Ecology, Ocean University of China, Qingdao, 266003, China
| | - Anqi Zhao
- Laboratory of Microbial Ecology, Ocean University of China, Qingdao, 266003, China
| | - Awais Ali
- Laboratory of Microbial Ecology, Ocean University of China, Qingdao, 266003, China
| | - Guangjian Xu
- College of Environment and Safety Engineering, Qingdao University of Science & Technology, Qingdao, 266042, China
| | - Xiaoxiao Zhong
- College of Environment and Safety Engineering, Qingdao University of Science & Technology, Qingdao, 266042, China
| | - Fayuan Wang
- College of Environment and Safety Engineering, Qingdao University of Science & Technology, Qingdao, 266042, China
| | - Henglong Xu
- Laboratory of Microbial Ecology, Ocean University of China, Qingdao, 266003, China.
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Tiwari N, Santhiya D, Sharma JG. Significance of landfill microbial communities in biodegradation of polyethylene and nylon 6,6 microplastics. JOURNAL OF HAZARDOUS MATERIALS 2024; 462:132786. [PMID: 37871442 DOI: 10.1016/j.jhazmat.2023.132786] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Revised: 09/28/2023] [Accepted: 10/12/2023] [Indexed: 10/25/2023]
Abstract
Plastic pollution, particularly microplastics, poses a significant environmental challenge. This study aimed to address the urgent need for sustainable solutions to manage plastic waste. The degradation of polyethylene microplastics (PEMPs) and nylon 6,6 microplastics (NMPs) were investigated using bacterial culture isolates, isolated from a municipal landfill site and identified through 16 S rDNA as well as metagenomics techniques.The study demonstrated for the first time along with degradation mechanism. The isolates identified as Achromobacter xylosoxidans and mixed culture species in dominance of Pulmonis sp. were used to degrade PEMPs and NMPs. Achromobacter xylosoxidans reduced microplastic's dry weight by 26.7% (PEMPs) and 21.3% (NMPs) in 40 days, while the mixed culture achieved weight reductions of 19.3% (PEMPs) and 20% (NMPs). The release of enzymes, laccase and peroxidases revealed C-C bond cleavage and reduced polymer chain length. The thermal studies (TGA and DSC) revealed changes in the thermal stability and transition characteristics of microplastics. The structural alterations on PEMPs and NMPs were recorded by FTIR analysis. Byproducts such as alkanes, esters, aromatic compounds and carboxylic acids released were identified by GC-MS. These results suggest the effectiveness of bacterial isolates in degrading PEMPs and NMPs, with potential for sustainable plastic waste management solutions.
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Affiliation(s)
- Neha Tiwari
- Department of Biotechnology, Delhi Technological University, Delhi, India
| | - Deenan Santhiya
- Department of Applied Chemistry, Delhi Technological University, Delhi, India.
| | - Jai Gopal Sharma
- Department of Biotechnology, Delhi Technological University, Delhi, India
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12
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He Y, Deng X, Jiang L, Hao L, Shi Y, Lyu M, Zhang L, Wang S. Current advances, challenges and strategies for enhancing the biodegradation of plastic waste. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 906:167850. [PMID: 37844647 DOI: 10.1016/j.scitotenv.2023.167850] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Revised: 10/13/2023] [Accepted: 10/13/2023] [Indexed: 10/18/2023]
Abstract
Due to its highly recalcitrant nature, the growing accumulation of plastic waste is becoming an urgent global problem. Biodegradation is one of the best possible approaches for the treatment of plastic waste in an environmentally friendly manner, but our current knowledge on the underlying mechanisms, as well as strategies for the development and enhancement of plastic biodegradation are still limited. This review aims to provide an updated and comprehensive overview of current research on plastic waste biodegradation, focusing on enhancement strategies with ongoing research significance, including the mining of highly efficient plastic-degrading microorganisms/enzymes, utilization of synergistic additives, novel pretreatment approaches, modification via molecular engineering, and construction of bacterial/enzyme consortia systems. Studying these strategies can (i) enrich the high-performance microbial/enzymes toolbox for plastic degradation, (ii) provide methods for recycling and upgrading plastics, as well as (iii) enable further molecular modification and functional optimization of plastic-degrading enzymes to realize economically viable biodegradation of plastics. To the best of our knowledge, this is the first review to discuss in detail strategies to enhance biodegradation of plastics. Finally, some recommendations for future research on plastic biodegradation are listed, hoping to provide the best direction for tackling the plastic waste dilemma in the future.
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Affiliation(s)
- Yuehui He
- Jiangsu Key Laboratory of Marine Bioresources and Environment/Jiangsu Key Laboratory of Marine, Biotechnology, Jiangsu Ocean University, Lianyungang 222005, China; Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, Jiangsu Ocean University, Lianyungang 222005, China; College of Marine Food and Bioengineering, Jiangsu Ocean University, Lianyungang 222005, China
| | - Xilong Deng
- College of Marine Food and Bioengineering, Jiangsu Ocean University, Lianyungang 222005, China
| | - Lei Jiang
- College of Marine Food and Bioengineering, Jiangsu Ocean University, Lianyungang 222005, China
| | - Lijuan Hao
- College of Marine Food and Bioengineering, Jiangsu Ocean University, Lianyungang 222005, China
| | - Yong Shi
- College of Marine Food and Bioengineering, Jiangsu Ocean University, Lianyungang 222005, China
| | - Mingsheng Lyu
- Jiangsu Key Laboratory of Marine Bioresources and Environment/Jiangsu Key Laboratory of Marine, Biotechnology, Jiangsu Ocean University, Lianyungang 222005, China; Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, Jiangsu Ocean University, Lianyungang 222005, China; College of Marine Food and Bioengineering, Jiangsu Ocean University, Lianyungang 222005, China
| | - Lei Zhang
- Jiangsu Key Laboratory of Marine Bioresources and Environment/Jiangsu Key Laboratory of Marine, Biotechnology, Jiangsu Ocean University, Lianyungang 222005, China; Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, Jiangsu Ocean University, Lianyungang 222005, China; College of Marine Food and Bioengineering, Jiangsu Ocean University, Lianyungang 222005, China.
| | - Shujun Wang
- Jiangsu Key Laboratory of Marine Bioresources and Environment/Jiangsu Key Laboratory of Marine, Biotechnology, Jiangsu Ocean University, Lianyungang 222005, China; Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, Jiangsu Ocean University, Lianyungang 222005, China; College of Marine Food and Bioengineering, Jiangsu Ocean University, Lianyungang 222005, China.
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13
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Zhang Z, Zhang H, Qiang H, Liu P, Guo X, Zhu L. Different microbial assemblage colonized on microplastics and clay particles in aerobic sludge treatment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 904:166473. [PMID: 37659565 DOI: 10.1016/j.scitotenv.2023.166473] [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: 07/11/2023] [Revised: 08/10/2023] [Accepted: 08/19/2023] [Indexed: 09/04/2023]
Abstract
In this study, a combination of property analysis and high-throughput sequencing was used to investigate the microbial colonization ability and their community structures and functions in polypropylene microplastics (PPMPs), polystyrene microplastics (PSMPs) and montmorillonite (MMT), respectively as the representatives of artificial and natural substrates in aerobic sludge treatment. After 45 d of incubation, the surface properties of substrates were altered with the increased oxygen functional groups and surface roughness, indicating microbial settlement. Moreover, MPs had different microbial structures from that of MMT, and PSMPs exhibited higher microbial diversity and abundance than PPMPs and MMT. Also, these substrates changed the inherent ecological niche in sludge. Especially, the abundance of some pathogens (e.g., Pseudomonas, Klebsiella and Flavobacterium) was increased in MPs, and the disease risk of Kyoto Encyclopedia of Genes and Genomes metabolic pathway (e.g., Infectious diseases: Bacterial, Infectious diseases: Parasitic and Immune diseases) was higher. Also, the presence of MPs inhibited the decomposition of organic matter including soluble chemical oxygen demand and protein compared to natural substrates. The findings revealed the crucial vector role of MPs for microbes and the effect on aerobic sludge treatment, highlighting the necessity of MP removal in sludge.
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Affiliation(s)
- Zixuan Zhang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Haiyu Zhang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Hong Qiang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, 712100, China; Key Laboratory of Plant Nutrition and the Agro-environment in Northwest China, Ministry of Agriculture and Rural Affairs, Yangling, Shaanxi, 712100, China.
| | - Peng Liu
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, 712100, China; Key Laboratory of Plant Nutrition and the Agro-environment in Northwest China, Ministry of Agriculture and Rural Affairs, Yangling, Shaanxi, 712100, China.
| | - Xuetao Guo
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, 712100, China; Key Laboratory of Plant Nutrition and the Agro-environment in Northwest China, Ministry of Agriculture and Rural Affairs, Yangling, Shaanxi, 712100, China
| | - Lingyan Zhu
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, 712100, China; Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China
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14
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Chakraborty M, Sharma B, Ghosh A, Sah D, Rai JPN. Elicitation of E-waste (acrylonitrile-butadiene styrene) enriched soil bioremediation and detoxification using Priestia aryabhattai MGP1. ENVIRONMENTAL RESEARCH 2023; 238:117126. [PMID: 37716383 DOI: 10.1016/j.envres.2023.117126] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 09/02/2023] [Accepted: 09/11/2023] [Indexed: 09/18/2023]
Abstract
Given the rise in both usage and disposal of dangerous electronics, there is a catastrophic rise in assemblage of electronic waste (e-waste). E-waste including various plastic resins are among the most frequently discarded materials in electronic gadgets. In current digital era, managing e-waste has become universal concern. From the viewpoint of persisting lacuna of e-waste managing methods, the current study is designed to fabricate an eco-friendly e-waste treatment with native soil bacteria employing an enrichment culture method. In the presence of e-waste, indigenous soil microbes were stimulated to degrade e-waste. Microbial cultures were isolated using enrichment medium containing acrylonitrile-butadiene styrene (ABS) as the primary carbon source. Priestia aryabhattai MGP1 was found to be the most dominant e-polymer degrading bacterial isolate, as it was reported to degrade ABS plastic in disposed-off television casings. Furthermore, to increase degradation potential of MGP1, Response Surface Methodology (RSM) was adopted which resulted in optimized conditions (pH 7, shaking-speed 120 rpm, and temperature 30 °C), for maximum degradation (18.88%) after 2 months. The structural changes induced by microbial treatment were demonstrated by comparing the findings of Field emission scanning electron microscopy (FESEM) images and Fourier Transform Infrared (FTIR) spectra confirming the disappearance of ≡ C─H peaks along with C-H, C=C and C ≡N bond destabilization following degradation. Energy-dispersive X-ray (EDX) analyzers of the native and decomposed e-polymer samples revealed a considerable loss in elemental weight % of oxygen by 8.4% and silica by 0.5%. Magnesium, aluminium and chlorine which were previously present in the untreated sample, were also removed after treatment by the bacterial action. When seeds of Vigna radiata were screened using treated soil in the presence of both e-waste and the chosen potent bacterial strain, it was also discovered that there was reduced toxicity in terms of improved germination and growth metrics as a phytotoxicity criterion.
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Affiliation(s)
- Moumita Chakraborty
- Department of Environmental Sciences, College of Basic Sciences & Humanities, G. B. Pant University of Agriculture & Technology, Pantnagar, Uttarakhand, India
| | - Barkha Sharma
- Department of Microbiology, College of Basic Sciences & Humanities, G. B. Pant University of Agriculture & Technology, Pantnagar, Uttarakhand, India
| | - Ankita Ghosh
- Department of Environmental Sciences, College of Basic Sciences & Humanities, G. B. Pant University of Agriculture & Technology, Pantnagar, Uttarakhand, India
| | - Diksha Sah
- Department of Environmental Sciences, College of Basic Sciences & Humanities, G. B. Pant University of Agriculture & Technology, Pantnagar, Uttarakhand, India
| | - J P N Rai
- Department of Environmental Sciences, College of Basic Sciences & Humanities, G. B. Pant University of Agriculture & Technology, Pantnagar, Uttarakhand, India.
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15
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Howard SA, Carr CM, Sbahtu HI, Onwukwe U, López MJ, Dobson ADW, McCarthy RR. Enrichment of native plastic-associated biofilm communities to enhance polyester degrading activity. Environ Microbiol 2023; 25:2698-2718. [PMID: 37515381 PMCID: PMC10947123 DOI: 10.1111/1462-2920.16466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Accepted: 06/30/2023] [Indexed: 07/30/2023]
Abstract
Plastic pollution is an increasing worldwide problem urgently requiring a solution. While recycling rates are increasing globally, only 9% of all plastic waste has been recycled, and with the cost and limited downstream uses of recycled plastic, an alternative is needed. Here, we found that expanded polystyrene (EPS) promoted high levels of bacterial biofilm formation and sought out environmental EPS waste to characterize these native communities. We demonstrated that the EPS attached communities had limited plastic degrading activity. We then performed a long-term enrichment experiment where we placed a robust selection pressure on these communities by limiting carbon availability such that the waste plastic was the only carbon source. Seven of the resulting enriched bacterial communities had increased plastic degrading activity compared to the starting bacterial communities. Pseudomonas stutzeri was predominantly identified in six of the seven enriched communities as the strongest polyester degrader. Sequencing of one isolate of P. stutzeri revealed two putative polyesterases and one putative MHETase. This indicates that waste plastic-associated biofilms are a source for bacteria that have plastic-degrading potential, and that this potential can be unlocked through selective pressure and further in vitro enrichment experiments, resulting in biodegradative communities that are better than nature.
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Affiliation(s)
- Sophie A. Howard
- Centre for Inflammation Research and Translational Medicine, Division of Biosciences, Department of Life Sciences, College of Health and Life SciencesBrunel University LondonUxbridgeUK
| | - Clodagh M. Carr
- School of MicrobiologyUniversity College CorkCorkIreland
- SSPC‐SFI Research Centre for PharmaceuticalsUniversity College CorkCorkIreland
| | - Habteab Isaack Sbahtu
- Centre for Inflammation Research and Translational Medicine, Division of Biosciences, Department of Life Sciences, College of Health and Life SciencesBrunel University LondonUxbridgeUK
| | - Uchechukwu Onwukwe
- Experimental Techniques Centre, College of Engineering, Design and Physical SciencesBrunel University LondonUxbridgeUK
| | - Maria J. López
- Department of Biology and Geology, CITE II‐BUniversity of Almería, Agrifood Campus of International Excellence ceiA3, CIAIMBITALAlmeriaSpain
| | - Alan D. W. Dobson
- School of MicrobiologyUniversity College CorkCorkIreland
- SSPC‐SFI Research Centre for PharmaceuticalsUniversity College CorkCorkIreland
| | - Ronan R. McCarthy
- Centre for Inflammation Research and Translational Medicine, Division of Biosciences, Department of Life Sciences, College of Health and Life SciencesBrunel University LondonUxbridgeUK
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16
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Yu X, Guo W, Duan J. The complete genome sequence of Peribacillus sp. R9-11 for genome mining of polystyrene degrading enzymes. Mar Genomics 2023; 72:101072. [PMID: 38008531 DOI: 10.1016/j.margen.2023.101072] [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: 09/17/2023] [Revised: 10/16/2023] [Accepted: 10/17/2023] [Indexed: 11/28/2023]
Abstract
Peribacillus sp. R9-11, isolated from a marine sediment sample of the Arctic Ocean, can grow in mineral medium with polystyrene (PS) plastic as sole carbon source. Here, we present the complete genome of Peribacillus sp. R9-11, which will facilitate the genome mining of PS degrading enzymes. The total length of the sequenced genome consists of 6,288,471 bases, with mean G + C content of 37.93%. A total of 6447 coding genes including 84 tRNAs and 37 rRNAs were predicted in the genome. Some potential PS degrading enzymes including cytochrome P450s and peroxidases were found in this genome.
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Affiliation(s)
- Xue Yu
- School of Advanced Manufacturing, Fuzhou University, Jinjiang 362251, China; Key Laboratory of Marine Biogenetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, Fujian, China
| | - Wenbin Guo
- School of Advanced Manufacturing, Fuzhou University, Jinjiang 362251, China; Key Laboratory of Marine Biogenetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, Fujian, China.
| | - Jingjing Duan
- College of Environment and Ecology, Xiamen University, Xiamen 361005, Fujian, China.
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17
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Jian P, Kumano T, Kimura M, Kurisaki M, Hashimoto Y, Kobayashi M. Biodegradation of the methylenedioxyphenyl group in piperine and its derivatives: discovery of a novel methylenetransferase in an actinomycete. Appl Environ Microbiol 2023; 89:e0114523. [PMID: 37874289 PMCID: PMC10686052 DOI: 10.1128/aem.01145-23] [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: 07/04/2023] [Accepted: 09/12/2023] [Indexed: 10/25/2023] Open
Abstract
IMPORTANCE Pepper is a spice that has been used worldwide since the Age of Discovery. The substance that is responsible for the spiciness in pepper is piperine, a type of alkaloid. It has never been reported how piperine is degraded by microorganisms. In this study, we discovered a bacterium in the soil that is capable of catabolizing piperine as its sole nitrogen source. Furthermore, we discovered the enzyme involved in piperine metabolism. This enzyme decomposed the methylenedioxyphenyl group, which is the common structure in various plant-derived bioactive compounds such as sesamin, piperonal, safrole, and berberin. By utilizing this enzyme, piperine can be converted into a useful antioxidant compound. The findings about previously unknown metabolic pathways in nature can lead to the discovery of new enzymes and provide methods for the enzymatic synthesis of useful compounds.
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Affiliation(s)
- Pu Jian
- Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Takuto Kumano
- Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
- Microbiology Research Center for Sustainability, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Mio Kimura
- Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Makoto Kurisaki
- Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Yoshiteru Hashimoto
- Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
- Microbiology Research Center for Sustainability, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Michihiko Kobayashi
- Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
- Microbiology Research Center for Sustainability, University of Tsukuba, Tsukuba, Ibaraki, Japan
- Center for Quantum and Information Life Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
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18
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Calarnou L, Traïkia M, Leremboure M, Malosse L, Dronet S, Delort AM, Besse-Hoggan P, Eyheraguibel B. Assessing biodegradation of roadway particles via complementary mass spectrometry and NMR analyses. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 900:165698. [PMID: 37499838 DOI: 10.1016/j.scitotenv.2023.165698] [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: 05/04/2023] [Revised: 07/10/2023] [Accepted: 07/19/2023] [Indexed: 07/29/2023]
Abstract
Roadway particles (RP) that can be collected with on-vehicle system, consist of a mixture of Tire and road wear particles (TRWP) with other traffic-derived particles (exhaust or non-exhaust) and/or biogenic compounds and represent a significant source of xenobiotics, susceptible to reach the different environmental compartments. The study of the RP fate is thus a major challenge to tackle in order to understand their degradation and impact. They offer a variety of carbon sources potentially usable by microorganisms, ranging from the tire-derived plasticizers, vulcanizing agents, protective agents and their transformation products, to other traffic, road and environmental-derived contaminants. A multi-analytical approach was implemented to characterize RP and study their biodegradation. Kinetics of RP extractions were monitored during 21 days in water, methanol, acetone and chloroform to identify leaching and extractable compounds and monitor the particle composition. The results confirmed that hundreds of readily leachable chemicals can be extracted from RP directly into water according to a dynamic process with time while additional poorly soluble compounds remain in the particles. Mass spectrometry (LC-HRMS and GC-MS) allowed us to propose 296 putative compounds using an extensive rubber database. The capacity of 6 bacterial strains, belonging to Rhodococcus, Pseudomonas and Streptomyces genera, to biodegrade RP was then evaluated over 14 days of incubation. The selected strains were able to grow on RP using various substrates. Elastomer monitoring by 1H NMR revealed a significant 12 % decrease of the extractable SBR fraction when the particles were incubated with Rhodococcus ruber. After incubation, the biodegradation of 171 compounds among leachable and extractable compounds was evaluated. Fatty acids and alkanes from rubber plasticizers and paraffin waxes were the most degraded putative compounds by the six strains tested, reaching 75 % of biodegradation for some of them.
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Affiliation(s)
- Laurie Calarnou
- Université Clermont Auvergne, Clermont Auvergne INP, CNRS, Institut de Chimie (ICCF), F-63000 Clermont- Ferrand, France
| | - Mounir Traïkia
- Université Clermont Auvergne, Clermont Auvergne INP, CNRS, Institut de Chimie (ICCF), F-63000 Clermont- Ferrand, France
| | - Martin Leremboure
- Université Clermont Auvergne, Clermont Auvergne INP, CNRS, Institut de Chimie (ICCF), F-63000 Clermont- Ferrand, France
| | - Lucie Malosse
- Manufacture Française des Pneumatiques MICHELIN, Centre de Technologies Ladoux, F-63040 Clermont-Ferrand, France
| | - Séverin Dronet
- Manufacture Française des Pneumatiques MICHELIN, Centre de Technologies Ladoux, F-63040 Clermont-Ferrand, France
| | - Anne-Marie Delort
- Université Clermont Auvergne, Clermont Auvergne INP, CNRS, Institut de Chimie (ICCF), F-63000 Clermont- Ferrand, France
| | - Pascale Besse-Hoggan
- Université Clermont Auvergne, Clermont Auvergne INP, CNRS, Institut de Chimie (ICCF), F-63000 Clermont- Ferrand, France
| | - Boris Eyheraguibel
- Université Clermont Auvergne, Clermont Auvergne INP, CNRS, Institut de Chimie (ICCF), F-63000 Clermont- Ferrand, France.
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19
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Guo W, Duan J, Shi Z, Yu X, Shao Z. Biodegradation of PET by the membrane-anchored PET esterase from the marine bacterium Rhodococcus pyridinivorans P23. Commun Biol 2023; 6:1090. [PMID: 37891241 PMCID: PMC10611731 DOI: 10.1038/s42003-023-05470-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Accepted: 10/16/2023] [Indexed: 10/29/2023] Open
Abstract
Evidence for microbial biodegradation of polyethylene terephthalate (PET) has been reported, but little is known about the PET biodegradation process and molecular mechanism by marine microorganisms. Here, we show the biodegradation of PET by the membrane-anchored PET esterase from the marine bacterium Rhodococcus pyridinivorans P23, elucidate the properties of this enzyme, and propose the PET biodegradation by this strain in biofilm. We identify the PET-degrading enzyme dubbed PET esterase through activity tracking. In addition to depolymerizing PET, it hydrolyzes MHET into TPA under acid conditions. We prove that it is a low and constitutively transcribed, membrane-anchored protein displayed on the cell surface. Furthermore, we also investigate the microbial groups possessing PET esterase coupled with the TPA degradation pathway, mainly in the phyla Proteobacteria and Actinobacteriota. Clarification of the microbial PET biodegradation in the marine environment will contribute to the understanding of bioremediation of marine PET pollution.
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Affiliation(s)
- Wenbin Guo
- Key Laboratory of Marine Biogenetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 361005, Xiamen, Fujian, China.
| | - Jingjing Duan
- College of Environment and Ecology, Xiamen University, 361005, Xiamen, Fujian, China.
| | - Zhengguang Shi
- Key Laboratory of Marine Biogenetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 361005, Xiamen, Fujian, China
- School of Advanced Manufacturing, Fuzhou University, 362251, Jinjiang, China
| | - Xue Yu
- Key Laboratory of Marine Biogenetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 361005, Xiamen, Fujian, China
- School of Advanced Manufacturing, Fuzhou University, 362251, Jinjiang, China
| | - Zongze Shao
- Key Laboratory of Marine Biogenetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 361005, Xiamen, Fujian, China
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20
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Hsueh SW, Jian YH, Fugmann SD, Yang SY. Polystyrene-colonizing bacteria are enriched for long-chain alkane degradation pathways. PLoS One 2023; 18:e0292137. [PMID: 37788234 PMCID: PMC10547174 DOI: 10.1371/journal.pone.0292137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Accepted: 09/13/2023] [Indexed: 10/05/2023] Open
Abstract
One of the most promising strategies for the management of plastic waste is microbial biodegradation, but efficient degraders for many types of plastics are still lacking, including those for polystyrene (PS). Genomics has emerged as a powerful tool for mining environmental microbes that may have the ability to degrade different types of plastics. In this study, we use 16S rRNA sequencing to analyze the microbiomes for multiple PS samples collected from sites with different vegetation in Taiwan to reveal potential common properties between species that exhibit growth advantages on PS surfaces. Phylum enrichment analysis identified Cyanobacteria and Deinococcus-Thermus as being the most over-represented groups on PS, and both phyla include species known to reside in extreme environments and could encode unique enzymes that grant them properties suitable for colonization on PS surfaces. Investigation of functional enrichment using reference genomes of PS-enriched species highlighted carbon metabolic pathways, especially those related to hydrocarbon degradation. This is corroborated by the finding that genes encoding long-chain alkane hydroxylases such as AlmA are more prevalent in the genomes of PS-associated bacteria. Our analyses illustrate how plastic in the environment support the colonization by different microbes compared to surrounding soil. In addition, our results point to the possibility that alkane hydroxylases could confer growth advantages of microbes on PS.
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Affiliation(s)
- Shu Wei Hsueh
- Department and Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Kweishan, Taoyuan, Taiwan
| | - You-Hua Jian
- Department and Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Kweishan, Taoyuan, Taiwan
| | - Sebastian D. Fugmann
- Department and Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Kweishan, Taoyuan, Taiwan
- Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Kweishan, Taoyuan, Taiwan
- Department of Nephrology, Linkou Chang Gung Memorial Hospital, Kweishan, Taoyuan, Taiwan
| | - Shu Yuan Yang
- Department and Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Kweishan, Taoyuan, Taiwan
- Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Kweishan, Taoyuan, Taiwan
- Department of Obstetrics and Gynecology, Linkou Chang Gung Memorial Hospital, Kweishan, Taoyuan, Taiwan
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21
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Howard SA, McCarthy RR. Modulating biofilm can potentiate activity of novel plastic-degrading enzymes. NPJ Biofilms Microbiomes 2023; 9:72. [PMID: 37788986 PMCID: PMC10547765 DOI: 10.1038/s41522-023-00440-1] [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: 04/16/2023] [Accepted: 09/19/2023] [Indexed: 10/05/2023] Open
Abstract
Plastic pollution is an increasing global issue desperately requiring a solution. Only 9% of all plastic waste has been recycled, and whilst recycling gives a second life to plastic, it is costly and there are limited downstream uses of recycled plastic, therefore an alternative is urgently needed. Biodegradation of plastic by microorganisms is a developing field of interest with the potential for bioreactors to be used alongside recycling to degrade plastic that may otherwise be sent to landfill. Here, we have identified two novel polyethylene terephthalate (PET) degrading enzymes through genomic mining and characterised their activity, including their ability to degrade PET. One of the main roadblocks facing the development of microbial enzymes as a plastic biodegradation solution, is that their efficiency is too low to facilitate development as bioremediation tools. In an innovative approach to tackle this roadblock, we hypothesised that enhancing a bacteria's ability to attach to and form a biofilm on plastic could maximise the local concentration of the enzyme around the target substrate, therefore increasing the overall rate of plastic degradation. We found that increasing biofilm levels, by manipulating the levels of the second messenger, Cyclic-di-GMP, led to increased levels of polyester degradation in cells expressing novel and well characterised polyester-degrading enzymes. This indicates that modulating biofilm formation is a viable mechanism to fast track the development of bacterial plastic bioremediation solutions.
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Affiliation(s)
- Sophie A Howard
- Division of Biosciences, Department of Life Sciences, College of Health and Life Sciences, Brunel University London, Uxbridge, UB8 3PH, UK
| | - Ronan R McCarthy
- Division of Biosciences, Department of Life Sciences, College of Health and Life Sciences, Brunel University London, Uxbridge, UB8 3PH, UK.
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22
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Tao X, Ouyang H, Zhou A, Wang D, Matlock H, Morgan JS, Ren AT, Mu D, Pan C, Zhu X, Han A, Zhou J. Polyethylene Degradation by a Rhodococcous Strain Isolated from Naturally Weathered Plastic Waste Enrichment. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:13901-13911. [PMID: 37682848 PMCID: PMC10515485 DOI: 10.1021/acs.est.3c03778] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 08/22/2023] [Accepted: 08/23/2023] [Indexed: 09/10/2023]
Abstract
Polyethylene (PE) is the most widely produced synthetic polymer and the most abundant plastic waste worldwide due to its recalcitrance to biodegradation and low recycle rate. Microbial degradation of PE has been reported, but the underlying mechanisms are poorly understood. Here, we isolated a Rhodococcus strain A34 from 609 day enriched cultures derived from naturally weathered plastic waste and identified the potential key PE degradation enzymes. After 30 days incubation with A34, 1% weight loss was achieved. Decreased PE molecular weight, appearance of C-O and C═O on PE, palmitic acid in the culture supernatant, and pits on the PE surface were observed. Proteomics analysis identified multiple key PE oxidation and depolymerization enzymes including one multicopper oxidase, one lipase, six esterase, and a few lipid transporters. Network analysis of proteomics data demonstrated the close relationships between PE degradation and metabolisms of phenylacetate, amino acids, secondary metabolites, and tricarboxylic acid cycles. The metabolic roadmap generated here provides critical insights for optimization of plastic degradation condition and assembly of artificial microbial communities for efficient plastic degradation.
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Affiliation(s)
- Xuanyu Tao
- Institute
for Environmental Genomics, Department of Microbiology and Plant Biology, University of Oklahoma, Norman, Oklahoma 73019, United States
| | - Huanrong Ouyang
- Department
of Chemical Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Aifen Zhou
- Institute
for Environmental Genomics, Department of Microbiology and Plant Biology, University of Oklahoma, Norman, Oklahoma 73019, United States
| | - Dongyu Wang
- Department
of Microbiology and Plant Biology, University
of Oklahoma, Norman, Oklahoma 73019, United States
| | - Hagan Matlock
- Institute
for Environmental Genomics, Department of Microbiology and Plant Biology, University of Oklahoma, Norman, Oklahoma 73019, United States
| | - Josiah S. Morgan
- Institute
for Environmental Genomics, Department of Microbiology and Plant Biology, University of Oklahoma, Norman, Oklahoma 73019, United States
| | - Abigail T. Ren
- Institute
for Environmental Genomics, Department of Microbiology and Plant Biology, University of Oklahoma, Norman, Oklahoma 73019, United States
| | - Dashuai Mu
- Marine
College, Shandong University, Weihai 264105, China
| | - Chongle Pan
- Department
of Microbiology and Plant Biology, University
of Oklahoma, Norman, Oklahoma 73019, United States
| | - Xuejun Zhu
- Department
of Chemical Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Arum Han
- Department
of Chemical Engineering, Texas A&M University, College Station, Texas 77843, United States
- Department
of Electrical and Computer Engineering, Texas A&M University, College
Station, Texas 77843, United States
- Department
of Biomedical Engineering, Texas A&M
University, College Station, Texas 77843, United States
| | - Jizhong Zhou
- Institute
for Environmental Genomics, Department of Microbiology and Plant Biology, University of Oklahoma, Norman, Oklahoma 73019, United States
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23
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Xiang P, Zhang Y, Zhang T, Wu Q, Zhao C, Li Q. A novel bacterial combination for efficient degradation of polystyrene microplastics. JOURNAL OF HAZARDOUS MATERIALS 2023; 458:131856. [PMID: 37331064 DOI: 10.1016/j.jhazmat.2023.131856] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 06/12/2023] [Accepted: 06/13/2023] [Indexed: 06/20/2023]
Abstract
This study aimed to investigate the combined decomposition of polystyrene (PS) microplastics using three bacterial cultures: Stenotrophomonas maltophilia, Bacillus velezensis, and Acinetobacter radioresistens. The ability of all three strains to grow on medium containing PS (Mn 90,000 Da, Mw 241,200 Da) microplastics as the sole carbon source was examined. After 60 days of A. radioresistens treatment, the maximum weight loss of the PS microplastics was found to be 16.7 ± 0.6% (half-life 251.1 d). After 60 days of treatment with S. maltophilia and B. velezensis, the maximum weight loss of PS microplastics was 43.5 ± 0.8% (half-life 74.9 d). After 60 days of treatment with S. maltophilia, B. velezensis, and A. radioresistens, the weight loss of the PS microplastics was 17.0 ± 0.2% (half-life 224.2 d). The S. maltophilia and B. velezensis treatment showed a more significant degradation effect after 60 days. This result was attributed to interspecific assistance and interspecific competition. Biodegradation of PS microplastics was confirmed using scanning electron microscopy, water contact angle, high-temperature gel chromatography, Fourier transform infrared spectroscopy and thermogravimetric analysis. This study is the first to explore the degradation ability of different bacterial combinations on PS microplastics, providing a reference for future research on the biodegradation technology of mixed bacteria.
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Affiliation(s)
- Peng Xiang
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Sichuan Engineering & Technology Research Center of Coarse Cereal Industrialization, School of Food and Biological Engineering, Chengdu University, Chengdu, Sichuan, China
| | - Yunfeng Zhang
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Sichuan Engineering & Technology Research Center of Coarse Cereal Industrialization, School of Food and Biological Engineering, Chengdu University, Chengdu, Sichuan, China
| | - Ting Zhang
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Sichuan Engineering & Technology Research Center of Coarse Cereal Industrialization, School of Food and Biological Engineering, Chengdu University, Chengdu, Sichuan, China; School of Public Health, Chengdu Medical College, Chengdu, Sichuan, China
| | - Qian Wu
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Sichuan Engineering & Technology Research Center of Coarse Cereal Industrialization, School of Food and Biological Engineering, Chengdu University, Chengdu, Sichuan, China
| | - Changsong Zhao
- School of Public Health, Chengdu Medical College, Chengdu, Sichuan, China.
| | - Qiang Li
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Sichuan Engineering & Technology Research Center of Coarse Cereal Industrialization, School of Food and Biological Engineering, Chengdu University, Chengdu, Sichuan, China.
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24
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Dad FP, Khan WUD, Kirkham MB, Bolan N, Tanveer M. Microplastics: a review of their impacts on different life forms and their removal methods. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:86632-86655. [PMID: 37438501 DOI: 10.1007/s11356-023-28513-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 06/26/2023] [Indexed: 07/14/2023]
Abstract
The pollution of microplastics (MPs) is a worldwide major concern, as they have become a major part of our food chain. MPs enter our ecosystem via different pathways, including anthropogenic activities and improper disposal of plastics. The aim of this article is to review the current scientific literature related to MPs and how they affect different life forms on earth. Briefly, MPs induced negative effects on humans are primarily linked with the oxidative stress and disruption in immunity. MPs not only affect the soil chemical and physical properties such as reduction in soil health and productivity but also impose harmful effects on soil microorganisms. Moreover, MP-induced plant growth reduction results from three complementary mechanisms: (i) reduction in root and shoot growth, (ii) reduction in photosynthesis accompanied by higher reactive oxygen species (ROS) production, and (iii) reduction in nutrient uptake via altered root growth. Given the negative effects of MPs on different life forms, it is important to remove or remediate them. We have discussed different MP removal methods including coagulation, membrane filtration technology, biochar, and biological degradation of MPs in soil and wastewater effluents. The use of ozone as ultrafiltration technique has also been shown as the most promising technique for MP removal. Finally, some future research recommendations are also put forward at the end to further enhance our understanding of the MPs induced negative effects on different life forms. The flowchart shows the interaction of MPs from water contaminated with MPs with different parts of the ecosystem and final interaction with human health.
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Affiliation(s)
- Fiza Pir Dad
- Sustainable Development Study Centre, Government College University, Lahore, 54000, Pakistan
| | - Waqas-Ud-Din Khan
- Sustainable Development Study Centre, Government College University, Lahore, 54000, Pakistan
- Department of Agriculture, Government College University, Lahore, 54000, Pakistan
| | - M B Kirkham
- Department of Agronomy, Kansas State University, Manhattan, KS, 66506, USA
| | - Nanthi Bolan
- School of Agriculture and Environment, The University of Western Australia, Perth, WA, 6009, Australia
- The UWA Institute of Agriculture, The University of Western Australia, Perth, WA, 6009, Australia
| | - Mohsin Tanveer
- Tasmanian Institute of Agriculture, University of Tasmania, Tasmania, Australia.
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25
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Vaksmaa A, Polerecky L, Dombrowski N, Kienhuis MVM, Posthuma I, Gerritse J, Boekhout T, Niemann H. Polyethylene degradation and assimilation by the marine yeast Rhodotorula mucilaginosa. ISME COMMUNICATIONS 2023; 3:68. [PMID: 37423910 PMCID: PMC10330194 DOI: 10.1038/s43705-023-00267-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 05/16/2023] [Accepted: 05/26/2023] [Indexed: 07/11/2023]
Abstract
Ocean plastic pollution is a severe environmental problem but most of the plastic that has been released to the ocean since the 1950s is unaccounted for. Although fungal degradation of marine plastics has been suggested as a potential sink mechanism, unambiguous proof of plastic degradation by marine fungi, or other microbes, is scarce. Here we applied stable isotope tracing assays with 13C-labeled polyethylene to measure biodegradation rates and to trace the incorporation of plastic-derived carbon into individual cells of the yeast Rhodotorula mucilaginosa, which we isolated from the marine environment. 13C accumulation in the CO2 pool during 5-day incubation experiments with R. mucilaginosa and UV-irradiated 13C-labeled polyethylene as a sole energy and carbon source translated to degradation rates of 3.8% yr-1 of the initially added substrate. Furthermore, nanoSIMS measurements revealed substantial incorporation of polyethylene-derived carbon into fungal biomass. Our results demonstrate the potential of R. mucilaginosa to mineralize and assimilate carbon from plastics and suggest that fungal plastic degradation may be an important sink for polyethylene litter in the marine environment.
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Affiliation(s)
- Annika Vaksmaa
- Department of Marine Microbiology and Biogeochemistry, NIOZ Royal Netherlands Institute for Sea Research, Texel, The Netherlands.
| | - Lubos Polerecky
- Department of Earth Sciences, Faculty of Geosciences, Utrecht University, Utrecht, The Netherlands
| | - Nina Dombrowski
- Department of Marine Microbiology and Biogeochemistry, NIOZ Royal Netherlands Institute for Sea Research, Texel, The Netherlands
| | - Michiel V M Kienhuis
- Department of Earth Sciences, Faculty of Geosciences, Utrecht University, Utrecht, The Netherlands
| | - Ilsa Posthuma
- Department of Marine Microbiology and Biogeochemistry, NIOZ Royal Netherlands Institute for Sea Research, Texel, The Netherlands
| | - Jan Gerritse
- Deltares, Unit Subsurface and Groundwater Systems, Utrecht, The Netherlands
| | - Teun Boekhout
- Westerdijk Fungal Biodiversity Institute, Utrecht, The Netherlands
- Institute of Biodiversity and Ecosystem Dynamics (IBED), University of Amsterdam, Amsterdam, The Netherlands
- College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Helge Niemann
- Department of Marine Microbiology and Biogeochemistry, NIOZ Royal Netherlands Institute for Sea Research, Texel, The Netherlands
- Department of Earth Sciences, Faculty of Geosciences, Utrecht University, Utrecht, The Netherlands
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26
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Kumar M, Chaudhary DR, Jha B. Surface-associated bacterial assemblages on marine anthropogenic litter in the intertidal zone of the Arabian Sea, India. MARINE POLLUTION BULLETIN 2023; 193:115211. [PMID: 37392592 DOI: 10.1016/j.marpolbul.2023.115211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 06/01/2023] [Accepted: 06/20/2023] [Indexed: 07/03/2023]
Abstract
Anthropogenic marine litter (mainly plastic pollution) is a serious concern globally. The interactions between terrestrial and marine ecosystems lead to the accumulation of marine litter in the intertidal zone. The biofilm-forming bacteria tend to colonize on surfaces of marine litter which are composed of diverse bacteria and are less studied. The present study investigated the bacterial community composition using both culturable and non-culturable (Next-generation sequencing (NGS)) approaches associated with the marine litter (polyethylene (PE), styrofoam (SF) and fabric (FB)) at three distinct locations (Alang, Diu and Sikka) of the Arabian Sea, Gujarat, India. Predominant bacteria observed using culturable and NGS techniques belonged to Proteobacteria phyla. Alphaproteobacteria class dominated on polyethylene and styrofoam surfaces in the culturable fraction among the sites while the Bacillus dominated fabric surfaces. In the metagenomics fraction, Gammaproteobacteria dominated the surfaces except for PE and SF surfaces from Sikka and Diu, respectively. The PE surface at Sikka was dominated by Fusobacteriia while SF surface from Diu was dominated by Alphaproteobacteria. Both culture-dependent and NGS approaches identified hydrocarbon-degrading bacteria as well as pathogenic bacteria on the surfaces. The outcome of the present study illustrates diverse bacterial assemblages which occur on marine litter and increases our understanding of the plastisphere community.
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Affiliation(s)
- Madhav Kumar
- CSIR - Central Salt and Marine Chemicals Research Institute, G. B. Marg, Bhavnagar, Gujarat 364002, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Doongar R Chaudhary
- CSIR - Central Salt and Marine Chemicals Research Institute, G. B. Marg, Bhavnagar, Gujarat 364002, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.
| | - Bhavanath Jha
- CSIR - Central Salt and Marine Chemicals Research Institute, G. B. Marg, Bhavnagar, Gujarat 364002, India.
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27
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Thakur B, Singh J, Singh J, Angmo D, Vig AP. Biodegradation of different types of microplastics: Molecular mechanism and degradation efficiency. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 877:162912. [PMID: 36933716 DOI: 10.1016/j.scitotenv.2023.162912] [Citation(s) in RCA: 26] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 03/06/2023] [Accepted: 03/13/2023] [Indexed: 05/06/2023]
Abstract
Microplastics are widely distributed and a major pollutant in our ecosystem. Microplastics (MPs) are very small size plastic (<5 mm) present in environment, which comes from industrial, agricultural and household wastes. Plastic particles are more durable due to the presence of plasticizers and chemicals or additives. These plastics pollutants are more resistant to degradation. Inadequate recycling and excessive use of plastics lead to a large amount of waste accumulating in the terrestrial ecosystem, causing a risk to humans and animals. Thus, there is an urgent need to control microplastic pollution by employing different microorganisms to overcome this hazardous issue for the environment. Biological degradation depends upon different aspects, including chemical structure, functional group, molecular weight, crystallinity and additives. Molecular mechanisms for degradation of MPs through various enzymes have not extremely studied. It is necessary to degrade the MPs and overcome this problem. This review approaches different molecular mechanisms to degrade different types of microplastics and summarize the degradation efficiency of different types of bacteria, algae and fungal strains. The present study also summarizes the potential of microorganisms to degrade different polymers and the role of different enzymes in degradation of microplastics. To the outstanding of our awareness, this is the first article devoted to the role of microorganisms with their degradation efficiency. Furthermore, it also summarizes the role of intracellular and extracellular enzymes in biological degradation mechanism of microplastics.
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Affiliation(s)
- Babita Thakur
- Department of Microbiology, School of Bioengineering and Biosciences, Lovely Professional University, Phagwara, Punjab, India
| | - Jaswinder Singh
- Department of Zoology, Khalsa College Amritsar, Punjab, India.
| | - Joginder Singh
- Department of Microbiology, School of Bioengineering and Biosciences, Lovely Professional University, Phagwara, Punjab, India
| | - Deachen Angmo
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, Punjab, India
| | - Adarsh Pal Vig
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, Punjab, India
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28
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Ren SY, Ni HG. Biodeterioration of Microplastics by Bacteria Isolated from Mangrove Sediment. TOXICS 2023; 11:toxics11050432. [PMID: 37235247 DOI: 10.3390/toxics11050432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Revised: 04/18/2023] [Accepted: 04/28/2023] [Indexed: 05/28/2023]
Abstract
As a kind of ubiquitous emerging pollutant, microplastics (MPs) are persistent in the environment and have a large impact on the ecosystem. Fortunately, some microorganisms in the natural environment can degrade these persistent MPs without creating secondary pollution. In this study, 11 different MPs were selected as carbon sources to screen the microorganisms for degradable MPs and explore the possible mechanism of degradation. After repeated domestication, a relatively stable microbial community was obtained after approximately 30 days later. At this time, the biomass of the medium ranged from 88 to 699 mg/L. The growth of bacteria with different MPs ranged from 0.030 to 0.090 optical density (OD) 600 of the first generation to 0.009-0.081 OD 600 of the third generation. The weight loss method was used to determine the biodegradation ratios of different MPs. The mass losses of polyhydroxybutyrate (PHB), polyethylene (PE), and polyhydroxyalkanoate (PHA) were relatively large, at 13.4%, 13.0%, and 12.7%, respectively; these figures for polyvinyl chloride (PVC) and polystyrene (PS) were relatively slight, 8.90% and 9.10%, respectively. The degradation half-life (t1/2) of 11 kinds of MPs ranges from 67 to 116 days. Among the mixed strains, Pseudomonas sp., Pandoraea sp., and Dyella sp. grew well. The possible degradation mechanism is that such microbial aggregates can adhere to the surface of MPs and form complex biofilms, secrete extracellular and intracellular enzymes, etc., break the hydrolyzable chemical bonds or ends of molecular chains by attacking the plastic molecular chains, and produce monomers, dimers, and other oligomers, leading to the reduction of the molecular weight of the plastic itself.
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Affiliation(s)
- Shu-Yan Ren
- School of Urban Planning and Design, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Hong-Gang Ni
- School of Urban Planning and Design, Peking University Shenzhen Graduate School, Shenzhen 518055, China
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29
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Tang PM, Habib S, Shukor MYA, Alias SA, Smykla J, Yasid NA. Evaluation of the Deterioration of Untreated Commercial Polystyrene by Psychrotrophic Antarctic Bacterium. Polymers (Basel) 2023; 15:polym15081841. [PMID: 37111988 PMCID: PMC10144070 DOI: 10.3390/polym15081841] [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: 02/15/2023] [Revised: 04/04/2023] [Accepted: 04/04/2023] [Indexed: 04/29/2023] Open
Abstract
Polystyrene (PS) and microplastic production pose persistent threats to the ecosystem. Even the pristine Antarctic, which is widely believed to be pollution-free, was also affected by the presence of microplastics. Therefore, it is important to comprehend the extent to which biological agents such as bacteria utilise PS microplastics as a carbon source. In this study, four soil bacteria from Greenwich Island, Antarctica, were isolated. A preliminary screening of the isolates for PS microplastics utilisation in the Bushnell Haas broth was conducted with the shake-flask method. The isolate AYDL1 identified as Brevundimonas sp. was found to be the most efficient in utilising PS microplastics. An assay on PS microplastics utilisation showed that the strain AYDL1 tolerated PS microplastics well under prolonged exposure with a weight loss percentage of 19.3% after the first interval (10 days of incubation). Infrared spectroscopy showed that the bacteria altered the chemical structure of PS while a deformation of the surface morphology of PS microplastics was observed via scanning electron microscopy after being incubated for 40 days. The obtained results may essentially indicate the utilisation of liable polymer additives or "leachates" and thus, validate the mechanistic approach for a typical initiation process of PS microplastics biodeterioration by the bacteria (AYDL1)-the biotic process.
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Affiliation(s)
- Pui Mun Tang
- Department of Biochemistry, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang 43400, Malaysia
| | - Syahir Habib
- Department of Biochemistry, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang 43400, Malaysia
| | - Mohd Yunus Abd Shukor
- Department of Biochemistry, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang 43400, Malaysia
| | - Siti Aisyah Alias
- Institute of Ocean and Earth Sciences, C308 Institute of Postgraduate Studies, University of Malaya, Kuala Lumpur 50603, Malaysia
- National Antarctic Research Centre, B303 Institute of Postgraduate Studies, University of Malaya, Kuala Lumpur 50603, Malaysia
| | - Jerzy Smykla
- Institute of Nature Conservation, Polish Academy of Sciences, Mickiewicza 33, 31-120 Kraków, Poland
| | - Nur Adeela Yasid
- Department of Biochemistry, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang 43400, Malaysia
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30
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Chirumbolo S. Comments on the reduction in emerging contaminants in water samples from the Esmeraldas coast (Ecuador). THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 881:163242. [PMID: 37004766 PMCID: PMC10085715 DOI: 10.1016/j.scitotenv.2023.163242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 03/26/2023] [Accepted: 03/30/2023] [Indexed: 04/14/2023]
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31
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Rabot C, Chen Y, Lin SY, Miller B, Chiang YM, Oakley CE, Oakley BR, Wang CCC, Williams TJ. Polystyrene Upcycling into Fungal Natural Products and a Biocontrol Agent. J Am Chem Soc 2023; 145:5222-5230. [PMID: 36779837 PMCID: PMC11062757 DOI: 10.1021/jacs.2c12285] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
Abstract
Polystyrene (PS) is one of the most used yet infrequently recycled plastics. Although manufactured on the scale of 300 million tons per year globally, current approaches toward PS degradation are energy- and carbon-inefficient, slow, and/or limited in the value that they reclaim. We recently reported a scalable process to degrade post-consumer polyethylene-containing waste streams into carboxylic diacids. Engineered fungal strains then upgrade these diacids biosynthetically to synthesize pharmacologically active secondary metabolites. Herein, we apply a similar reaction to rapidly convert PS to benzoic acid in high yield. Engineered strains of the filamentous fungus Aspergillus nidulans then biosynthetically upgrade PS-derived crude benzoic acid to the structurally diverse secondary metabolites ergothioneine, pleuromutilin, and mutilin. Further, we expand the catalog of plastic-derived products to include spores of the industrially relevant biocontrol agent Aspergillus flavus Af36 from crude PS-derived benzoic acid.
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Affiliation(s)
- Chris Rabot
- Department of Pharmacology & Pharmaceutical Sciences, University of Southern California, 1985 Zonal Ave, Los Angeles, California 90089 United States
| | - Yuhao Chen
- Department of Chemistry, Donald P. and Katherine B. Loker Hydrocarbon Institute, University of Southern California, 837 Bloom Walk, Los Angeles, California 90089 United States
- Wrigley Institute for Environmental Studies, 3454 Trousdale Parkway, Los Angeles, California 90089 United States
| | - Shu-Yi Lin
- Department of Pharmacology & Pharmaceutical Sciences, University of Southern California, 1985 Zonal Ave, Los Angeles, California 90089 United States
| | - Ben Miller
- Department of Pharmacology & Pharmaceutical Sciences, University of Southern California, 1985 Zonal Ave, Los Angeles, California 90089 United States
- Department of Chemistry, Donald P. and Katherine B. Loker Hydrocarbon Institute, University of Southern California, 837 Bloom Walk, Los Angeles, California 90089 United States
| | - Yi-Ming Chiang
- Department of Pharmacology & Pharmaceutical Sciences, University of Southern California, 1985 Zonal Ave, Los Angeles, California 90089 United States
| | - C Elizabeth Oakley
- Department of Molecular Biosciences, University of Kansas, 1200 Sunnyside Avenue, Lawrence, Kansas 66045 United States
| | - Berl R Oakley
- Department of Molecular Biosciences, University of Kansas, 1200 Sunnyside Avenue, Lawrence, Kansas 66045 United States
| | - Clay C C Wang
- Department of Pharmacology & Pharmaceutical Sciences, University of Southern California, 1985 Zonal Ave, Los Angeles, California 90089 United States
- Department of Chemistry, Donald P. and Katherine B. Loker Hydrocarbon Institute, University of Southern California, 837 Bloom Walk, Los Angeles, California 90089 United States
- Wrigley Institute for Environmental Studies, 3454 Trousdale Parkway, Los Angeles, California 90089 United States
| | - Travis J Williams
- Department of Chemistry, Donald P. and Katherine B. Loker Hydrocarbon Institute, University of Southern California, 837 Bloom Walk, Los Angeles, California 90089 United States
- Wrigley Institute for Environmental Studies, 3454 Trousdale Parkway, Los Angeles, California 90089 United States
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32
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Ali S, Bukhari DA, Rehman A. Call for biotechnological approach to degrade plastic in the era of COVID-19 pandemic. Saudi J Biol Sci 2023; 30:103583. [PMID: 36748033 PMCID: PMC9893805 DOI: 10.1016/j.sjbs.2023.103583] [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: 11/24/2022] [Revised: 01/09/2023] [Accepted: 01/29/2023] [Indexed: 02/05/2023] Open
Abstract
Plastic pollution is a global issue and has become a major concern since Coronavirus disease (COVID)-19. In developing nations, landfilling and illegal waste disposal are typical ways to dispose of COVID-19-infected material. These technologies worsen plastic pollution and other human and animal health problems. Plastic degrades in light and heat, generating hazardous primary and secondary micro-plastic. Certain bacteria can degrade artificial polymers using genes, enzymes, and metabolic pathways. Microorganisms including bacteria degrade petrochemical plastics slowly. High molecular weight, strong chemical bonds, and excessive hydrophobicity reduce plastic biodegradation. There is not enough study on genes, enzymes, and bacteria-plastic interactions. Synthetic biology, metabolic engineering, and bioinformatics methods have been created to biodegrade synthetic polymers. This review will focus on how microorganisms' degrading capacity can be increased using recent biotechnological techniques.
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Key Words
- BHET, bis(2-hydroxyethyl
- Bacteria
- COVID-19
- COVID-19, Coronavirus disease-19
- FTIR, Fourier-transform infrared
- HDPE, High-density polyethene
- LDPE, Low-density polyethene
- MHET, Mono(2-hydroxyethyl
- MP, Microplastics
- Microorganisms
- NP, Nanoplastics
- PE, Polyethene
- PES, Polyethylene succinate
- PET, Polyethylene terephthalate
- PP, Polypropylene
- PPE, Personal protective equipment
- PS, Polystyrene
- PVC, Polyvinyl chloride
- Plastic degradation
- Plastic pollution
- TCA, Tricarboxylic acid
- TPA, Terephthalic acid
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Affiliation(s)
- Shakir Ali
- Department of Zoology, Government College University, Lahore, Pakistan
| | - Dilara A. Bukhari
- Department of Zoology, Government College University, Lahore, Pakistan
| | - Abdul Rehman
- Institute of Microbiology and Molecular Genetics, University of the Punjab, New Campus, Lahore 54590, Pakistan,Correspondence author at: Institute of Microbiology & Molecular Genetics, University of the Punjab, New Campus, Lahore 54590, Pakistan
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33
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Biomedical applications of solid-binding peptides and proteins. Mater Today Bio 2023; 19:100580. [PMID: 36846310 PMCID: PMC9950531 DOI: 10.1016/j.mtbio.2023.100580] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 02/06/2023] [Accepted: 02/10/2023] [Indexed: 02/17/2023] Open
Abstract
Over the past decades, solid-binding peptides (SBPs) have found multiple applications in materials science. In non-covalent surface modification strategies, solid-binding peptides are a simple and versatile tool for the immobilization of biomolecules on a vast variety of solid surfaces. Especially in physiological environments, SBPs can increase the biocompatibility of hybrid materials and offer tunable properties for the display of biomolecules with minimal impact on their functionality. All these features make SBPs attractive for the manufacturing of bioinspired materials in diagnostic and therapeutic applications. In particular, biomedical applications such as drug delivery, biosensing, and regenerative therapies have benefited from the introduction of SBPs. Here, we review recent literature on the use of solid-binding peptides and solid-binding proteins in biomedical applications. We focus on applications where modulating the interactions between solid materials and biomolecules is crucial. In this review, we describe solid-binding peptides and proteins, providing background on sequence design and binding mechanism. We then discuss their application on materials relevant for biomedicine (calcium phosphates, silicates, ice crystals, metals, plastics, and graphene). Although the limited characterization of SBPs still represents a challenge for their design and widespread application, our review shows that SBP-mediated bioconjugation can be easily introduced into complex designs and on nanomaterials with very different surface chemistries.
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Anand U, Dey S, Bontempi E, Ducoli S, Vethaak AD, Dey A, Federici S. Biotechnological methods to remove microplastics: a review. ENVIRONMENTAL CHEMISTRY LETTERS 2023; 21:1787-1810. [PMID: 36785620 PMCID: PMC9907217 DOI: 10.1007/s10311-022-01552-4] [Citation(s) in RCA: 25] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Accepted: 11/25/2022] [Indexed: 05/14/2023]
Abstract
Microplastics pollution is major threat to ecosystems and is impacting abiotic and biotic components. Microplastics are diverse and highly complex contaminants that transport other contaminants and microbes. Current methods to remove microplastics include biodegradation, incineration, landfilling, and recycling. Here we review microplastics with focus on sources, toxicity, and biodegradation. We discuss the role of algae, fungi, bacteria in the biodegradation, and we present biotechnological methods to enhance degradation, e.g., gene editing tools and bioinformatics.
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Affiliation(s)
- Uttpal Anand
- Zuckerberg Institute for Water Research, Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, 8499000 Midreshet Ben Gurion, Israel
| | - Satarupa Dey
- Department of Botany, Shyampur Siddheswari Mahavidyalaya, University of Calcutta, Ajodhya, Shyampur, Howrah, 711312 India
| | - Elza Bontempi
- Department of Mechanical and Industrial Engineering, INSTM Unit of Brescia, University of Brescia, Via Branze 38, 25123 Brescia, Italy
| | - Serena Ducoli
- Department of Mechanical and Industrial Engineering, INSTM Unit of Brescia, University of Brescia, Via Branze 38, 25123 Brescia, Italy
| | - A. Dick Vethaak
- Department of Environment and Health, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
- Institute for Risk Assessment Sciences, Department of Population Health Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, Netherlands
| | - Abhijit Dey
- Department of Life Sciences, Presidency University, 86/1 College Street, Kolkata, West Bengal 700073 India
| | - Stefania Federici
- Department of Mechanical and Industrial Engineering, INSTM Unit of Brescia, University of Brescia, Via Branze 38, 25123 Brescia, Italy
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Screening the Efficacy of a Microbial Consortium of Bacteria and Fungi Isolated from Different Environmental Samples for the Degradation of LDPE/TPS Films. SEPARATIONS 2023. [DOI: 10.3390/separations10020079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
In this study, a screening of the efficacy of a microbial consortium of bacteria and fungi isolated from activated sludge, river sediment, and compost for the degradation of LDPE/TPS was performed. According to the morphological and biochemical characterization, eight bacteria, Bacillus sonorensis, Bacillus subtilis, Lysinibacillus massiliensis, Bacillus licheniformis, Bacillus indicus, Bacillus megaterium, Bacillus cereus, and Pseudomonas alcaligenes, five molds, Aspergillus sp. 1, Aspergillus sp. 2, Trichoderma sp., Rhizopus sp., Penicillium sp., and Alternaria sp., and a yeast, Candida parapsilosis, were identified. The first experiment E1 was inoculated with microorganisms isolated from activated sludge and river sediment, and E2 with microorganisms isolated from compost. In both experiments, different types of polymeric materials, low density polyethylene (E1-1 and E2-1), thermoplastic starch (E1-2 and E2-2), low density polyethylene + thermoplastic starch (E1-3 and E2-3), low density polyethylene + thermoplastic starch + styrene-ethylene-styrene (E1-4 and E2-4) were added. The obtained results, weight loss, SEM, and FTIR analysis showed that the microorganisms in both experiments were able to degrade polymeric materials. The mixed culture of microorganisms in experiments E1-2 and E2-2 completely degraded TPS (thermoplastic starch). The percent weight losses of LDPE, LDPE+20% TPS, and LDPE+20% TPS+SEBS in experiment E1 were 3.3184%, 14.1152%, and 16.0062% and in experiment E2 were 3.9625%, 20.4520% and 21.9277%, respectively. SEM microscopy shows that the samples with a LDPE matrix exhibited moderate surface degradation and negligible oxidative degradation under the given conditions. FTIR/ATR data demonstrate that degradation was more intense in E2 than in E1.
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Liu R, Zhao S, Zhang B, Li G, Fu X, Yan P, Shao Z. Biodegradation of polystyrene (PS) by marine bacteria in mangrove ecosystem. JOURNAL OF HAZARDOUS MATERIALS 2023; 442:130056. [PMID: 36183512 DOI: 10.1016/j.jhazmat.2022.130056] [Citation(s) in RCA: 20] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 09/20/2022] [Accepted: 09/22/2022] [Indexed: 06/16/2023]
Abstract
Plastics pollution poses a new threat to marine ecosystems. Mangrove locating at estuary worldwide is probably the most heavily polluted area trapping various plastics transported from terrestrial and nearby marine aquaculture. Expanded polystyrene (EPS) is one of most common plastic debris therein and even in the plastic garbage. Here we showed the bacterial diversity of the polystyrene-degrading microbial community from EPS waste sites from a subtropical mangrove area. After enrichment with EPS, the degradation consortia were obtained. They shared a similar community structure dominated by bacteria of Sphingomonadaceae, Rhodanobacteraceae, Rhizobiaceae, Dermacoccaceae, Rhodocyclaceae, Hyphomicrobiaceae, and Methyloligellaceae. Diverse bacteria standing for the first member of the genera of Novosphingobium, Gordonia, Stappia, Mesobacillus, Alcanivorax, Flexivirga, Cytobacillus, Thioclava, and Thalassospira showed PS degradation capability as a pure culture. Further, PS biodegradation of Gordonia sp. and Novosphingobium sp. was quantified by weight loss, in addition to obvious morphological and structural changes of the PS films observed by SEM, ATR-FTIR, and contact angle analysis. The formation of new oxygen-containing functional groups implied the degradation pathway of oxidation. Although the degradation rates ranged from 2.7% to 7.7% after one month in lab and possibly lower in situ, their role in EPS removal is unneglectable.
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Affiliation(s)
- Renju Liu
- School of Environmental Science, Harbin Institute of Technology, Harbin 150090, PR China; Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, Ministry of Natural Resources of China, Xiamen 361005, PR China
| | - Sufang Zhao
- Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, Ministry of Natural Resources of China, Xiamen 361005, PR China; School of Fisheries and life, Shanghai Ocean University, Shanghai 201306, PR China
| | - Benjuan Zhang
- Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, Ministry of Natural Resources of China, Xiamen 361005, PR China; School of Fisheries and life, Shanghai Ocean University, Shanghai 201306, PR China
| | - Guangyu Li
- Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, Ministry of Natural Resources of China, Xiamen 361005, PR China
| | - Xiaoteng Fu
- Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, Ministry of Natural Resources of China, Xiamen 361005, PR China
| | - Peisheng Yan
- School of Environmental Science, Harbin Institute of Technology, Harbin 150090, PR China.
| | - Zongze Shao
- School of Environmental Science, Harbin Institute of Technology, Harbin 150090, PR China; Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, Ministry of Natural Resources of China, Xiamen 361005, PR China; School of Fisheries and life, Shanghai Ocean University, Shanghai 201306, PR China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519000, PR China.
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Wani AK, Akhtar N, Naqash N, Rahayu F, Djajadi D, Chopra C, Singh R, Mulla SI, Sher F, Américo-Pinheiro JHP. Discovering untapped microbial communities through metagenomics for microplastic remediation: recent advances, challenges, and way forward. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:1-24. [PMID: 36637649 PMCID: PMC9838310 DOI: 10.1007/s11356-023-25192-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Accepted: 01/04/2023] [Indexed: 06/01/2023]
Abstract
Microplastics (MPs) are ubiquitous pollutants persisting almost everywhere in the environment. With the increase in anthropogenic activities, MP accumulation is increasing enormously in aquatic, marine, and terrestrial ecosystems. Owing to the slow degradation of plastics, MPs show an increased biomagnification probability of persistent, bioaccumulative, and toxic substances thereby creating a threat to environmental biota. Thus, remediation of MP-pollutants requires efficient strategies to circumvent the mobilization of contaminants leaching into the water, soil, and ultimately to human beings. Over the years, several microorganisms have been characterized by the potential to degrade different plastic polymers through enzymatic actions. Metagenomics (MGs) is an effective way to discover novel microbial communities and access their functional genetics for the exploration and characterization of plastic-degrading microbial consortia and enzymes. MGs in combination with metatranscriptomics and metabolomics approaches are a powerful tool to identify and select remediation-efficient microbes in situ. Advancement in bioinformatics and sequencing tools allows rapid screening, mining, and prediction of genes that are capable of polymer degradation. This review comprehensively summarizes the growing threat of microplastics around the world and highlights the role of MGs and computational biology in building effective response strategies for MP remediation.
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Affiliation(s)
- Atif Khurshid Wani
- School of Bioengineering and Biosciences, Lovely Professional University, Punjab, 144411, India
| | - Nahid Akhtar
- School of Bioengineering and Biosciences, Lovely Professional University, Punjab, 144411, India
| | - Nafiaah Naqash
- School of Bioengineering and Biosciences, Lovely Professional University, Punjab, 144411, India
| | - Farida Rahayu
- Research Center for Applied Microbiology, National Research and Innovation Agency, Bogor, 16911, Indonesia
| | - Djajadi Djajadi
- Research Center for Horticulture and Plantation, National Research Innovation Agency, Bogor, 16111, Indonesia
| | - Chirag Chopra
- School of Bioengineering and Biosciences, Lovely Professional University, Punjab, 144411, India
| | - Reena Singh
- School of Bioengineering and Biosciences, Lovely Professional University, Punjab, 144411, India
| | - Sikandar I Mulla
- Department of Biochemistry, School of Allied Health Sciences, REVA University, Bengaluru, 560064, Karnataka, India
| | - Farooq Sher
- Department of Engineering, School of Science and Technology, Nottingham Trent University, Nottingham, NG11 8NS, UK
| | - Juliana Heloisa Pinê Américo-Pinheiro
- Department of Forest Science, Soils and Environment, School of Agronomic Sciences, São Paulo State University (UNESP), Ave. Universitária, 3780, Botucatu, SP, 18610-034, Brazil.
- Graduate Program in Environmental Sciences, Brazil University, Street Carolina Fonseca, 584, São Paulo, SP, 08230-030, Brazil.
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Zhai X, Zhang XH, Yu M. Microbial colonization and degradation of marine microplastics in the plastisphere: A review. Front Microbiol 2023; 14:1127308. [PMID: 36876073 PMCID: PMC9981674 DOI: 10.3389/fmicb.2023.1127308] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 01/27/2023] [Indexed: 02/19/2023] Open
Abstract
Marine microplastic pollution is a growing problem for ecotoxicology that needs to be resolved. In particular, microplastics may be carriers of "dangerous hitchhikers," pathogenic microorganisms, i.e., Vibrio. Microplastics are colonized by bacteria, fungi, viruses, archaea, algae and protozoans, resulting in the biofilm referred to as the "plastisphere." The microbial community composition of the plastisphere differs significantly from those of surrounding environments. Early dominant pioneer communities of the plastisphere belong to primary producers, including diatoms, cyanobacteria, green algae and bacterial members of the Gammaproteobacteria and Alphaproteobacteria. With time, the plastisphere mature, and the diversity of microbial communities increases quickly to include more abundant Bacteroidetes and Alphaproteobacteria than natural biofilms. Factors driving the plastisphere composition include environmental conditions and polymers, with the former having a much larger influence on the microbial community composition than polymers. Microorganisms of the plastisphere may play key roles in degradation of plastic in the oceans. Up to now, many bacterial species, especially Bacillus and Pseudomonas as well as some polyethylene degrading biocatalysts, have been shown to be capable of degrading microplastics. However, more relevant enzymes and metabolisms need to be identified. Here, we elucidate the potential roles of quorum sensing on the plastic research for the first time. Quorum sensing may well become a new research area to understand the plastisphere and promote microplastics degradation in the ocean.
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Affiliation(s)
- Xinyi Zhai
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, College of Marine Life Sciences, Ocean University of China, Qingdao, China
| | - Xiao-Hua Zhang
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, College of Marine Life Sciences, Ocean University of China, Qingdao, China.,Laboratory for Marine Ecology and Environmental Science, Laoshan Laboratory, Qingdao, China.,Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao, China
| | - Min Yu
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, College of Marine Life Sciences, Ocean University of China, Qingdao, China.,Laboratory for Marine Ecology and Environmental Science, Laoshan Laboratory, Qingdao, China.,Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao, China
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Wu H, Liu Q, Sun W, Lu Y, Qi Y, Zhang H. Biodegradability of polyethylene mulch film by Bacillus paramycoides. CHEMOSPHERE 2023; 311:136978. [PMID: 36306965 DOI: 10.1016/j.chemosphere.2022.136978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 10/19/2022] [Accepted: 10/20/2022] [Indexed: 06/16/2023]
Abstract
Discarded polyethylene (PE) mulch film has led to persistent agricultural pollution. Biodegradation of plastic waste is considered as a promising solution that can potentially overcome environmental and economic problems. In this study, a novel bacterium (Bacillus paramycoides) was isolated from a waste mulch recycling plant and showed an extraordinary ability to customize polyethylene film. It was observed by scanning electron microscopy that a large number of pits and wrinkle cracks existed on the polyethylene, indicating that the strain used PE film as the sole carbon source. Meanwhile, the loss of weight of the film was tested continuously, and approximately 12% of the initial weight of the film was found to be lost within 45 days after coincubation with TW-2. The surface hydrophobicity of the polyethylene film decreased while the surface tension increased from 9.755 to 31.013. Fourier transform infrared (FTIR) analysis indicated that absorption peaks near 1740 cm-1 and 2760 cm-1 were attributed to the stretching vibrations of aldehyde and carboxyl groups, respectively, suggesting that hydrophilic groups were produced. This was also confirmed by XPS spectroscopy analysis. X-ray diffraction (XRD) analysis also showed that the relative crystallinity decreased from 33% to 11.51%. In addition, GPC analysis showed that the molecular weight decreased, while the proportion of low molecular weight fragments increased. These results strongly indicated that the PE film was able to be degraded to some extent by the strain. Finally, a new biodegradable mechanism for polyethylene was proposed.
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Affiliation(s)
- Hui Wu
- Key Laboratory of Environment-Friendly Composite Materials of the State Ethnic Affairs Commission, Lanzhou, 730000, PR China
| | - Qiang Liu
- Key Laboratory of Environment-Friendly Composite Materials of the State Ethnic Affairs Commission, Lanzhou, 730000, PR China
| | - Wenxiao Sun
- Key Laboratory for Utility of Environmental Friendly Composite Materials and Biomass in University of Gansu Province, Lanzhou, 730000, PR China
| | - Yahong Lu
- College of Chemical Engineering, Northwest Minzu University, Lanzhou, 730030, PR China
| | - Yanjiao Qi
- Key Laboratory of Environment-Friendly Composite Materials of the State Ethnic Affairs Commission, Lanzhou, 730000, PR China; Key Laboratory for Utility of Environmental Friendly Composite Materials and Biomass in University of Gansu Province, Lanzhou, 730000, PR China
| | - Hong Zhang
- Key Laboratory of Environment-Friendly Composite Materials of the State Ethnic Affairs Commission, Lanzhou, 730000, PR China; Key Laboratory for Utility of Environmental Friendly Composite Materials and Biomass in University of Gansu Province, Lanzhou, 730000, PR China; College of Chemical Engineering, Northwest Minzu University, Lanzhou, 730030, PR China.
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Goudriaan M, Morales VH, van der Meer MTJ, Mets A, Ndhlovu RT, van Heerwaarden J, Simon S, Heuer VB, Hinrichs KU, Niemann H. A stable isotope assay with 13C-labeled polyethylene to investigate plastic mineralization mediated by Rhodococcus ruber. MARINE POLLUTION BULLETIN 2023; 186:114369. [PMID: 36462423 DOI: 10.1016/j.marpolbul.2022.114369] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 10/10/2022] [Accepted: 11/11/2022] [Indexed: 06/17/2023]
Abstract
Methods that unambiguously prove microbial plastic degradation and allow for quantification of degradation rates are necessary to constrain the influence of microbial degradation on the marine plastic budget. We developed an assay based on stable isotope tracer techniques to determine microbial plastic mineralization rates in liquid medium on a lab scale. For the experiments, 13C-labeled polyethylene (13C-PE) particles (irradiated with UV-light to mimic exposure of floating plastic to sunlight) were incubated in liquid medium with Rhodococcus ruber as a model organism for proof of principle. The transfer of 13C from 13C-PE into the gaseous and dissolved CO2 pools translated to microbially mediated mineralization rates of up to 1.2 % yr-1 of the added PE. After incubation, we also found highly 13C-enriched membrane fatty acids of R. ruber including compounds involved in cellular stress responses. We demonstrated that isotope tracer techniques are a valuable tool to detect and quantify microbial plastic degradation.
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Affiliation(s)
- Maaike Goudriaan
- Department of Marine Microbiology and Biogeochemistry (MMB), Royal Netherlands Institute of Sea Research (NIOZ), 1797 SZ 't Horntje, the Netherlands.
| | - Victor Hernando Morales
- Department of Marine Microbiology and Biogeochemistry (MMB), Royal Netherlands Institute of Sea Research (NIOZ), 1797 SZ 't Horntje, the Netherlands; Centro de Investigación Mariña, University of Vigo, Department of Ecology and Animal Biology, Biological Oceanography Group, 36319 Vigo, Spain
| | - Marcel T J van der Meer
- Department of Marine Microbiology and Biogeochemistry (MMB), Royal Netherlands Institute of Sea Research (NIOZ), 1797 SZ 't Horntje, the Netherlands
| | - Anchelique Mets
- Department of Marine Microbiology and Biogeochemistry (MMB), Royal Netherlands Institute of Sea Research (NIOZ), 1797 SZ 't Horntje, the Netherlands
| | - Rachel T Ndhlovu
- Department of Marine Microbiology and Biogeochemistry (MMB), Royal Netherlands Institute of Sea Research (NIOZ), 1797 SZ 't Horntje, the Netherlands
| | - Johan van Heerwaarden
- Department of Marine Microbiology and Biogeochemistry (MMB), Royal Netherlands Institute of Sea Research (NIOZ), 1797 SZ 't Horntje, the Netherlands
| | - Sina Simon
- MARUM-Center for Marine Environmental Sciences, University of Bremen, 28334 Bremen, Germany
| | - Verena B Heuer
- MARUM-Center for Marine Environmental Sciences, University of Bremen, 28334 Bremen, Germany
| | - Kai-Uwe Hinrichs
- MARUM-Center for Marine Environmental Sciences, University of Bremen, 28334 Bremen, Germany
| | - Helge Niemann
- Department of Marine Microbiology and Biogeochemistry (MMB), Royal Netherlands Institute of Sea Research (NIOZ), 1797 SZ 't Horntje, the Netherlands; Department of Earth Sciences, Faculty of Geosciences, Utrecht University, 3584 CB Utrecht, the Netherlands; CAGE-Centre for Arctic Gas Hydrate, Environment and Climate, Department of Geosciences, UiT the Arctic University of Norway, 9037 Tromsø, Norway.
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Leicht A, Gatz-Schrupp J, Masuda H. Discovery of Nylon 11 ingestion by mealworm ( Tenebrio molitor) larvae and detection of monomer-degrading bacteria in gut microbiota. AIMS Microbiol 2022; 8:612-623. [PMID: 36694582 PMCID: PMC9834084 DOI: 10.3934/microbiol.2022039] [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: 09/28/2022] [Revised: 11/18/2022] [Accepted: 12/15/2022] [Indexed: 12/29/2022] Open
Abstract
Nylon 11, which can be found in many commercial products, is a synthetic plastic that has previously been considered non-biodegradable. Increasing nylon 11 and other plastics in landfills and in the environment pose an environmental concern. Recent studies on plastic biodegradation revealed that initial mechanical fragmentations increase the rate of degradation. In this study, we discovered that the larvae of mealworm (Tenebrio molitor) can masticate nylon 11 film at the rate of 0.25 ± 0.07 mg per fifty larvae per day. The body mass of larvae did not differ from that of starvation control while feeding on nylon 11. Comparison of gut microbiota in nylon-fed and starving larvae showed a shift in composition. There was a significant variation in community composition among the nylon 11-fed experimental groups, suggesting that many organisms are capable of metabolizing nylon 11 fragments and/or possess a growth advantage in a nylon-fed gut environment. We also discovered that a significant fraction of gut microbiome of control larvae is capable of metabolizing nylon 11 monomer (11-aminoundecanoic acid) even in the absence of prior exposure to nylon 11. This is the first study demonstrating ingestion of nylon polymers by invertebrates, and our results suggest the potential of mealworm larvae for nylon 11 biodegradation applications.
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Oliveira J, Almeida PL, Sobral RG, Lourenço ND, Gaudêncio SP. Marine-Derived Actinomycetes: Biodegradation of Plastics and Formation of PHA Bioplastics-A Circular Bioeconomy Approach. Mar Drugs 2022; 20:md20120760. [PMID: 36547907 PMCID: PMC9783806 DOI: 10.3390/md20120760] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 11/22/2022] [Accepted: 11/28/2022] [Indexed: 12/05/2022] Open
Abstract
Plastics are present in the majority of daily-use products worldwide. Due to society's production and consumption patterns, plastics are accumulating in the environment, causing global pollution issues and intergenerational impacts. Our work aims to contribute to the development of solutions and sustainable methods to mitigate this pressing problem, focusing on the ability of marine-derived actinomycetes to accelerate plastics biodegradation and produce polyhydroxyalkanoates (PHAs), which are biodegradable bioplastics. The thin plastic films' biodegradation was monitored by weight loss, changes in the surface chemical structure (Infra-Red spectroscopy FTIR-ATR), and by mechanical properties (tensile strength tests). Thirty-six marine-derived actinomycete strains were screened for their plastic biodegradability potential. Among these, Streptomyces gougerotti, Micromonospora matsumotoense, and Nocardiopsis prasina revealed ability to degrade plastic films-low-density polyethylene (LDPE), polystyrene (PS) and polylactic acid (PLA) in varying conditions, namely upon the addition of yeast extract to the culture media and the use of UV pre-treated thin plastic films. Enhanced biodegradation by these bacteria was observed in both cases. S. gougerotti degraded 0.56% of LDPE films treated with UV radiation and 0.67% of PS films when inoculated with yeast extract. Additionally, N. prasina degraded 1.27% of PLA films when these were treated with UV radiation, and yeast extract was added to the culture medium. The main and most frequent differences observed in FTIR-ATR spectra during biodegradation occurred at 1740 cm-1, indicating the formation of carbonyl groups and an increase in the intensity of the bands, which indicates oxidation. Young Modulus decreased by 30% on average. In addition, S. gougerotti and M. matsumotoense, besides biodegrading conventional plastics (LDPE and PS), were also able to use these as a carbon source to produce degradable PHA bioplastics in a circular economy concept.
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Affiliation(s)
- Juliana Oliveira
- Associate Laboratory i4HB, Institute for Health and Bioeconomy, NOVA School of Science and Technology, NOVA University Lisbon, 2819-516 Caparica, Portugal
- UCIBIO-Applied Molecular Biosciences Unit, Chemistry and Life Science Departments, NOVA School of Science and Technology, NOVA University Lisbon, 2819-516 Caparica, Portugal
| | - Pedro L. Almeida
- I3N-CENIMAT, Materials Science Department, School of Science and Technology, NOVA University Lisbon, 2819-516 Caparica, Portugal
- Physics Department, Instituto Superior de Engenharia de Lisboa, Instituto Politécnico de Lisboa, 1959-007 Lisbon, Portugal
| | - Rita G. Sobral
- Associate Laboratory i4HB, Institute for Health and Bioeconomy, NOVA School of Science and Technology, NOVA University Lisbon, 2819-516 Caparica, Portugal
- UCIBIO-Applied Molecular Biosciences Unit, Chemistry and Life Science Departments, NOVA School of Science and Technology, NOVA University Lisbon, 2819-516 Caparica, Portugal
| | - Nídia D. Lourenço
- Associate Laboratory i4HB, Institute for Health and Bioeconomy, NOVA School of Science and Technology, NOVA University Lisbon, 2819-516 Caparica, Portugal
- UCIBIO-Applied Molecular Biosciences Unit, Chemistry and Life Science Departments, NOVA School of Science and Technology, NOVA University Lisbon, 2819-516 Caparica, Portugal
| | - Susana P. Gaudêncio
- Associate Laboratory i4HB, Institute for Health and Bioeconomy, NOVA School of Science and Technology, NOVA University Lisbon, 2819-516 Caparica, Portugal
- UCIBIO-Applied Molecular Biosciences Unit, Chemistry and Life Science Departments, NOVA School of Science and Technology, NOVA University Lisbon, 2819-516 Caparica, Portugal
- Correspondence: ; Tel.: +351-21-2948300; Fax: +351-21-2948550
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Degradation-fragmentation of marine plastic waste and their environmental implications: A critical review. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.104262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Miloloža M, Ukić Š, Cvetnić M, Bolanča T, Kučić Grgić D. Optimization of Polystyrene Biodegradation by Bacillus cereus and Pseudomonas alcaligenes Using Full Factorial Design. Polymers (Basel) 2022; 14:polym14204299. [PMID: 36297877 PMCID: PMC9611612 DOI: 10.3390/polym14204299] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 09/28/2022] [Accepted: 10/10/2022] [Indexed: 11/16/2022] Open
Abstract
Microplastics (MP) are a global environmental problem because they persist in the environment for long periods of time and negatively impact aquatic organisms. Possible solutions for removing MP from the environment include biological processes such as bioremediation, which uses microorganisms to remove contaminants. This study investigated the biodegradation of polystyrene (PS) by two bacteria, Bacillus cereus and Pseudomonas alcaligenes, isolated from environmental samples in which MPs particles were present. First, determining significant factors affecting the biodegradation of MP-PS was conducted using the Taguchi design. Then, according to preliminary experiments, the optimal conditions for biodegradation were determined by a full factorial design (main experiments). The RSM methodology was applied, and statistical analysis of the obtained models was performed to analyze the influence of the studied factors. The most important factors for MP-PS biodegradation by Bacillus cereus were agitation speed, concentration, and size of PS, while agitation speed, size of PS, and optical density influenced the process by Pseudomonas alcaligenes. However, the optimal conditions for biodegradation of MP-PS by Bacillus cereus were achieved at γMP = 66.20, MP size = 413.29, and agitation speed = 100.45. The best conditions for MP-PS biodegradation by Pseudomonas alcaligenes were 161.08, 334.73, and 0.35, as agitation speed, MP size, and OD, respectively. In order to get a better insight into the process, the following analyzes were carried out. Changes in CFU, TOC, and TIC concentrations were observed during the biodegradation process. The increase in TOC values was explained by the detection of released additives from PS particles by LC-MS analysis. At the end of the process, the toxicity of the filtrate was determined, and the surface area of the particles was characterized by FTIR-ATR spectroscopy. Ecotoxicity results showed that the filtrate was toxic, indicating the presence of decomposition by-products. In both FTIR spectra, a characteristic weak peak at 1715 cm−1 was detected, indicating the formation of carbonyl groups (−C=O), confirming that a biodegradation process had taken place.
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Haque F, Fan C. Prospect of microplastic pollution control under the "New normal" concept beyond COVID-19 pandemic. JOURNAL OF CLEANER PRODUCTION 2022; 367:133027. [PMID: 35821718 PMCID: PMC9257196 DOI: 10.1016/j.jclepro.2022.133027] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 05/19/2022] [Accepted: 07/02/2022] [Indexed: 05/04/2023]
Abstract
Coronavirus disease (COVID-19) has led to increasing demand for single-use plastic which aggravates the already existing plastic waste problem. Not only does the demand for personal protective equipment (PPE) increase, but also people shift their preference to online shopping and food delivery to comply with administrative policies for COVID-19 pandemic control. The used PPEs, packaging materials, and food containers may not be handled or recycled properly after their disposal. As a result, the mismanaged plastic waste is discharged into the environment and it may pose even greater risks after breaking into smaller fragments, which was regarded as the source of secondary microplastics (MPs, < 5 mm) or nanoplastics (NPs, < 1 μm). The main objective of this manuscript is to provide a review of the studies related to microplastic release due to pandemic-associated plastic waste. This study summarizes the limited work published on the ecotoxicological/toxicological effect of MPs/NPs released from PPE on aquatic organisms, soil organisms, as well as humans. Given the current status of research on MPs from COVID-related plastic waste, the immediate research directions needed on this topic were discussed.
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Affiliation(s)
- Fatima Haque
- Department of Bioenvironmental Systems Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd, Da-An District, Taipei, Taiwan, 10617
| | - Chihhao Fan
- Department of Bioenvironmental Systems Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd, Da-An District, Taipei, Taiwan, 10617
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Li N, Han Z, Guo N, Zhou Z, Liu Y, Tang Q. Microplastics spatiotemporal distribution and plastic-degrading bacteria identification in the sanitary and non-sanitary municipal solid waste landfills. JOURNAL OF HAZARDOUS MATERIALS 2022; 438:129452. [PMID: 35777149 DOI: 10.1016/j.jhazmat.2022.129452] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 06/20/2022] [Accepted: 06/22/2022] [Indexed: 06/15/2023]
Abstract
The municipal solid waste landfill (MSWL) is an important source of microplastics (MPs) and a huge bioreactor for plastic-degrading microorganisms (PDM). However, the spatiotemporal distribution and degradation mechanisms of MPs in MSWLs are unclear. Therefore, they were studied using the samples drilled in a sanitary landfill (SL) and an non-sanitary landfill (NSL). The results showed that there were a lot of polyethylene (PE), polypropylene (PP), polystyrene (PS), polyurethane (PU), Polyamide (PA), Polyethylene terephthalate (PET) and Polyvinyl chloride (PVC) in the landfill, and their abundance ranged from 0 to 80 items/g. The MPs surface gradually faded, became rough and even yielded cracks and holes with the landfill depth and age increase. The tiny-size MPs (< 100 µm) were the most abundant and their amount significantly increased from 28.14% to 49.13% in SL and from 24.54% to 59.51% in NSL, respectively, while large-size MPs were significantly reduced from the top to the bottom. Lysinibacillus (0.21%~67.87%) and Bacillus (0.10%~67.00%) were the dominate PDMs in SL and Candidatus_Caldatribacterium (5.06%~73.48%) was the dominate in NSL. The PE degradation was closely related to Candidatus_Cloacimonas (r = 0.688*) and Candidatus_Caldatribacterium (r = 0.680*); PS and PA were closely related to Candidatus_Contubernalis (r = 0.595*~0.705*) and PVC was closely related to Candidatus_Caldatribacterium (r = 0.547*). In addition to physical and chemical effects, biological effects can also promote the MPs formation in MSWLs.
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Affiliation(s)
- Naying Li
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection (Chengdu University of Technology), Chengdu 610059, China; State Environmental Protection Key Laboratory of Synergetic Control and Joint Remediation for Soil & Water Pollution (Chengdu University of Technology), Chengdu 610059, China; College of Ecology and Environment, Chengdu University of Technology, Chengdu 610059, China
| | - Zhiyong Han
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection (Chengdu University of Technology), Chengdu 610059, China; State Environmental Protection Key Laboratory of Synergetic Control and Joint Remediation for Soil & Water Pollution (Chengdu University of Technology), Chengdu 610059, China; College of Ecology and Environment, Chengdu University of Technology, Chengdu 610059, China.
| | - Nanfei Guo
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection (Chengdu University of Technology), Chengdu 610059, China; State Environmental Protection Key Laboratory of Synergetic Control and Joint Remediation for Soil & Water Pollution (Chengdu University of Technology), Chengdu 610059, China; College of Ecology and Environment, Chengdu University of Technology, Chengdu 610059, China
| | - Zhiqiang Zhou
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection (Chengdu University of Technology), Chengdu 610059, China; State Environmental Protection Key Laboratory of Synergetic Control and Joint Remediation for Soil & Water Pollution (Chengdu University of Technology), Chengdu 610059, China; College of Ecology and Environment, Chengdu University of Technology, Chengdu 610059, China
| | - Ying Liu
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection (Chengdu University of Technology), Chengdu 610059, China; State Environmental Protection Key Laboratory of Synergetic Control and Joint Remediation for Soil & Water Pollution (Chengdu University of Technology), Chengdu 610059, China; College of Ecology and Environment, Chengdu University of Technology, Chengdu 610059, China
| | - Qianggang Tang
- Chengdu XingRong Environmental Technology Co., Ltd, Chengdu 610108, China
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Johnston B, Adamus G, Ekere AI, Kowalczuk M, Tchuenbou-Magaia F, Radecka I. Bioconversion of Plastic Waste Based on Mass Full Carbon Backbone Polymeric Materials to Value-Added Polyhydroxyalkanoates (PHAs). Bioengineering (Basel) 2022; 9:bioengineering9090432. [PMID: 36134978 PMCID: PMC9496005 DOI: 10.3390/bioengineering9090432] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 08/26/2022] [Accepted: 08/28/2022] [Indexed: 11/28/2022] Open
Abstract
This review article will discuss the ways in which various polymeric materials, such as polyethylene (PE), polypropylene (PP), polystyrene (PS), and poly(ethylene terephthalate) (PET) can potentially be used to produce bioplastics, such as polyhydroxyalkanoates (PHAs) through microbial cultivation. We will present up-to-date information regarding notable microbial strains that are actively used in the biodegradation of polyolefins. We will also review some of the metabolic pathways involved in the process of plastic depolymerization and discuss challenges relevant to the valorization of plastic waste. The aim of this review is also to showcase the importance of methods, including oxidative degradation and microbial-based processes, that are currently being used in the fields of microbiology and biotechnology to limit the environmental burden of waste plastics. It is our hope that this article will contribute to the concept of bio-upcycling plastic waste to value-added products via microbial routes for a more sustainable future.
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Affiliation(s)
- Brian Johnston
- Science in Industry Research Centre (SIRC), SciTech Innovation Hub, Wolverhampton Science Park, Glaisher Drive, Wolverhampton WV10 9RU, UK
- School of Science, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton WV1 1LY, UK
- Correspondence: (B.J.); (I.R.)
| | - Grazyna Adamus
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 41-800 Zabrze, Poland
| | - Anabel Itohowo Ekere
- School of Science, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton WV1 1LY, UK
| | - Marek Kowalczuk
- School of Science, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton WV1 1LY, UK
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 41-800 Zabrze, Poland
| | - Fideline Tchuenbou-Magaia
- School of Engineering, Computing and Mathematical Sciences, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton WV1 1LY, UK
| | - Iza Radecka
- School of Science, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton WV1 1LY, UK
- Correspondence: (B.J.); (I.R.)
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Vaksmaa A, Egger M, Lüke C, Martins PD, Rosselli R, Asbun AA, Niemann H. Microbial communities on plastic particles in surface waters differ from subsurface waters of the North Pacific Subtropical Gyre. MARINE POLLUTION BULLETIN 2022; 182:113949. [PMID: 35932724 DOI: 10.1016/j.marpolbul.2022.113949] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 07/08/2022] [Accepted: 07/11/2022] [Indexed: 06/15/2023]
Abstract
The long-term fate of plastics in the ocean and their interactions with marine microorganisms remain poorly understood. In particular, the role of sinking plastic particles as a transport vector for surface microbes towards the deep sea has not been investigated. Here, we present the first data on the composition of microbial communities on floating and suspended plastic particles recovered from the surface to the bathypelagic water column (0-2000 m water depth) of the North Pacific Subtropical Gyre. Microbial community composition of suspended plastic particles differed from that of plastic particles afloat at the sea surface. However, in both compartments, a diversity of hydrocarbon-degrading bacteria was identified. These findings indicate that microbial community members initially present on floating plastics are quickly replaced by microorganisms acquired from deeper water layers, thus suggesting a limited efficiency of sinking plastic particles to vertically transport microorganisms in the North Pacific Subtropical Gyre.
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Affiliation(s)
- Annika Vaksmaa
- Department of Marine Microbiology & Biogeochemistry, NIOZ Royal Netherlands Institute for Sea Research, 't Horntje, the Netherlands.
| | - Matthias Egger
- The Ocean Cleanup, Rotterdam, the Netherlands; Egger Research and Consulting, St. Gallen, Switzerland
| | - Claudia Lüke
- Radboud University, Department of Microbiology, Nijmegen, the Netherlands
| | | | - Riccardo Rosselli
- Departamento de Fisiología, Genética y Microbiología, Facultad de Ciencias, Universidad de Alicante, Spain; LABAQUA S.A.U, C/Dracma 16-18, Pol. Ind. Las Atalayas, 03114 Alicante, Spain
| | - Alejandro Abdala Asbun
- Department of Marine Microbiology & Biogeochemistry, NIOZ Royal Netherlands Institute for Sea Research, 't Horntje, the Netherlands
| | - Helge Niemann
- Department of Marine Microbiology & Biogeochemistry, NIOZ Royal Netherlands Institute for Sea Research, 't Horntje, the Netherlands; Department of Earth Sciences, Faculty of Geosciences, Utrecht University, Utrecht, the Netherlands
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Spindola Vilela CL, Damasceno TL, Thomas T, Peixoto RS. Global qualitative and quantitative distribution of micropollutants in the deep sea. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 307:119414. [PMID: 35598814 DOI: 10.1016/j.envpol.2022.119414] [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: 02/06/2022] [Revised: 04/28/2022] [Accepted: 05/01/2022] [Indexed: 06/15/2023]
Abstract
Micropollutants (MPs) include a wide range of biological disruptors that can be toxic to wildlife and humans at very low concentrations (<1 μg/L). These mainly anthropogenic pollutants have been widely detected in different areas of the planet, including the deep sea, and have impacts on marine life. Because of this potential toxicity, the global distribution, quantity, incidence, and potential impacts of deep-sea MPs were investigated in a systematic review of the literature. The results showed that MPs have reached different zones of the ocean and are more frequently reported in the Northern Hemisphere, where higher concentrations are found. MPs are also concentrated in depths up to 3000 m, where they are also more frequently studied, but also extend deeper than 10,000 m. Potentially toxic metals (PTMs), polychlorinated biphenyls (PCBs), dichlorodiphenyltrichloroethane (DDTs), organotins, and polycyclic aromatic hydrocarbons (PAHs) were identified as the most prevalent and widely distributed MPs at ≥200 m depth. PTMs are widely distributed in the deep sea in high concentrations; aluminum is the most prevalent up to 3000 m depth, followed by zinc and copper. PCBs, organotins, hexachlorocyclohexanes (HCHs), PAHs, and phenols were detected accumulated in both organisms and environmental samples above legislated thresholds or known toxicity levels. Our assessment indicated that the deep sea can be considered a sink for MPs.
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Affiliation(s)
- Caren Leite Spindola Vilela
- Department of General Microbiology, Paulo de Goes Institute of Microbiology, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Taissa Lopes Damasceno
- Department of General Microbiology, Paulo de Goes Institute of Microbiology, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Torsten Thomas
- Centre for Marine Science and Innovation & School of Biological, Earth and Environmental Sciences, The University of New South Wales, Sydney, NSW, Australia
| | - Raquel Silva Peixoto
- Department of General Microbiology, Paulo de Goes Institute of Microbiology, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil; Red Sea Research Center (RSRC), Division of Biological and Environmental Science and Engineering (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia.
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Ashby RD, Qureshi N, Strahan GD, Johnston DB, Msanne J, Lin X. Corn stover hydrolysate and levulinic acid: Mixed substrates for short-chain polyhydroxyalkanoate production. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2022. [DOI: 10.1016/j.bcab.2022.102391] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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