Elucidating polyethylene microplastic degradation mechanisms and metabolic pathways via iron-enhanced microbiota dynamics in marine sediments
The extensive use of plastics has given rise to microplastics, a novel environmental contaminant that has sparked considerable ecological and environmental concerns. Biodegradation offers a more environmentally friendly approach to eliminating microplastics, but their degradation by marine microbial...
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creator | Li, Xionge Li, Guangbi Wang, Jiaxin Li, Xinyi Yang, Yuru Song, Donghui |
description | The extensive use of plastics has given rise to microplastics, a novel environmental contaminant that has sparked considerable ecological and environmental concerns. Biodegradation offers a more environmentally friendly approach to eliminating microplastics, but their degradation by marine microbial communities has received little attention. In this study, we used iron-enhanced marine sediment to augment the natural bacterial community and facilitate the decomposition of polyethylene (PE) microplastics. The introduction of iron-enhanced sediment engendered an augmented bacterial biofilm formation on the surface of polyethylene (PE), thereby leading to a more pronounced degradation effect. This novel observation has been ascribed to the oxidative stress-induced generation of a variety of oxygenated functional groups, including hydroxyl (-OH), carbonyl (-CO), and ether (-C-O) moieties, within the microplastic substrate. The analysis of succession in the community structure of sediment bacteria during the degradation phase disclosed that Acinetobacter and Pseudomonas emerged as the principal bacterial players in PE degradation. These taxa were directly implicated in oxidative metabolic pathways facilitated by diverse oxidase enzymes under iron-facilitated conditions. The present study highlights bacterial community succession as a new pivotal factor influencing the complex biodegradation dynamics of polyethylene (PE) microplastics. This investigation also reveals, for the first time, a unique degradation pathway for PE microplastics orchestrated by the multifaceted marine sediment microbiota. These novel insights shed light on the unique functional capabilities and internal biochemical mechanisms employed by the marine sediment microbiota in effectively degrading polyethylene microplastics.
[Display omitted]
•Natural bacterial microbiota exhibits a crucial role in degradation of microplastics.•Enhancement of iron can significantly improve the biodegradation of microplastics.•Bacterial community succession is a key determinant in degradation of microplastics.•Two degradation pathways of microplastics by marine microbiota have been proposed. |
doi_str_mv | 10.1016/j.jhazmat.2024.133655 |
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[Display omitted]
•Natural bacterial microbiota exhibits a crucial role in degradation of microplastics.•Enhancement of iron can significantly improve the biodegradation of microplastics.•Bacterial community succession is a key determinant in degradation of microplastics.•Two degradation pathways of microplastics by marine microbiota have been proposed.</description><identifier>ISSN: 0304-3894</identifier><identifier>ISSN: 1873-3336</identifier><identifier>EISSN: 1873-3336</identifier><identifier>DOI: 10.1016/j.jhazmat.2024.133655</identifier><identifier>PMID: 38310843</identifier><language>eng</language><publisher>Netherlands: Elsevier B.V</publisher><subject>Bacterial consortium ; Degradation mechanism ; Enhancement of iron ; Polyethylene (PE) microplastics</subject><ispartof>Journal of hazardous materials, 2024-03, Vol.466, p.133655, Article 133655</ispartof><rights>2024 Elsevier B.V.</rights><rights>Copyright © 2024 Elsevier B.V. All rights reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c365t-452a7c4dbffee4558990ca26219f87bdec328fa7e177e757adc6512887078c843</citedby><cites>FETCH-LOGICAL-c365t-452a7c4dbffee4558990ca26219f87bdec328fa7e177e757adc6512887078c843</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.jhazmat.2024.133655$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/38310843$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Li, Xionge</creatorcontrib><creatorcontrib>Li, Guangbi</creatorcontrib><creatorcontrib>Wang, Jiaxin</creatorcontrib><creatorcontrib>Li, Xinyi</creatorcontrib><creatorcontrib>Yang, Yuru</creatorcontrib><creatorcontrib>Song, Donghui</creatorcontrib><title>Elucidating polyethylene microplastic degradation mechanisms and metabolic pathways via iron-enhanced microbiota dynamics in marine sediments</title><title>Journal of hazardous materials</title><addtitle>J Hazard Mater</addtitle><description>The extensive use of plastics has given rise to microplastics, a novel environmental contaminant that has sparked considerable ecological and environmental concerns. Biodegradation offers a more environmentally friendly approach to eliminating microplastics, but their degradation by marine microbial communities has received little attention. In this study, we used iron-enhanced marine sediment to augment the natural bacterial community and facilitate the decomposition of polyethylene (PE) microplastics. The introduction of iron-enhanced sediment engendered an augmented bacterial biofilm formation on the surface of polyethylene (PE), thereby leading to a more pronounced degradation effect. This novel observation has been ascribed to the oxidative stress-induced generation of a variety of oxygenated functional groups, including hydroxyl (-OH), carbonyl (-CO), and ether (-C-O) moieties, within the microplastic substrate. The analysis of succession in the community structure of sediment bacteria during the degradation phase disclosed that Acinetobacter and Pseudomonas emerged as the principal bacterial players in PE degradation. These taxa were directly implicated in oxidative metabolic pathways facilitated by diverse oxidase enzymes under iron-facilitated conditions. The present study highlights bacterial community succession as a new pivotal factor influencing the complex biodegradation dynamics of polyethylene (PE) microplastics. This investigation also reveals, for the first time, a unique degradation pathway for PE microplastics orchestrated by the multifaceted marine sediment microbiota. These novel insights shed light on the unique functional capabilities and internal biochemical mechanisms employed by the marine sediment microbiota in effectively degrading polyethylene microplastics.
[Display omitted]
•Natural bacterial microbiota exhibits a crucial role in degradation of microplastics.•Enhancement of iron can significantly improve the biodegradation of microplastics.•Bacterial community succession is a key determinant in degradation of microplastics.•Two degradation pathways of microplastics by marine microbiota have been proposed.</description><subject>Bacterial consortium</subject><subject>Degradation mechanism</subject><subject>Enhancement of iron</subject><subject>Polyethylene (PE) microplastics</subject><issn>0304-3894</issn><issn>1873-3336</issn><issn>1873-3336</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><recordid>eNqFkc1u1DAUhS0EokPbRwBlySaD_zJ2VghVbalUiQ2srRv7puNR4gTbUxTegXfGowxsu7Ku9J17fO4h5D2jW0bZ7tNhe9jD7xHyllMut0yIXdO8IhumlahFmV6TDRVU1kK38oK8S-lAKWWqkW_JhdCCUS3Fhvy5HY7WO8g-PFXzNCyY98uAAavR2zjNA6TsbeXwKcKJmkI1ot1D8GlMFQRXxgzdNBRohrz_BUuqnj1UPk6hxlBIi25d1vkpQ-WWAGVMlS-rIPpildD5EUNOV-RND0PC6_N7SX7c3X6_-Vo_frt_uPnyWNuSMtey4aCsdF3fI8qm0W1LLfAdZ22vVefQCq57UMiUQtUocHbXMK61okrbkvuSfFz3znH6ecSUzeiTxWGAgNMxGd5yLmVbJAVtVrQESClib-boy78Xw6g5NWEO5tyEOTVh1iaK7sPZ4tiN6P6r_p2-AJ9XAEvQZ4_RJOvxdC0f0WbjJv-CxV-NY6DO</recordid><startdate>20240315</startdate><enddate>20240315</enddate><creator>Li, Xionge</creator><creator>Li, Guangbi</creator><creator>Wang, Jiaxin</creator><creator>Li, Xinyi</creator><creator>Yang, Yuru</creator><creator>Song, Donghui</creator><general>Elsevier B.V</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>20240315</creationdate><title>Elucidating polyethylene microplastic degradation mechanisms and metabolic pathways via iron-enhanced microbiota dynamics in marine sediments</title><author>Li, Xionge ; Li, Guangbi ; Wang, Jiaxin ; Li, Xinyi ; Yang, Yuru ; Song, Donghui</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c365t-452a7c4dbffee4558990ca26219f87bdec328fa7e177e757adc6512887078c843</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2024</creationdate><topic>Bacterial consortium</topic><topic>Degradation mechanism</topic><topic>Enhancement of iron</topic><topic>Polyethylene (PE) microplastics</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Li, Xionge</creatorcontrib><creatorcontrib>Li, Guangbi</creatorcontrib><creatorcontrib>Wang, Jiaxin</creatorcontrib><creatorcontrib>Li, Xinyi</creatorcontrib><creatorcontrib>Yang, Yuru</creatorcontrib><creatorcontrib>Song, Donghui</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Journal of hazardous materials</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Li, Xionge</au><au>Li, Guangbi</au><au>Wang, Jiaxin</au><au>Li, Xinyi</au><au>Yang, Yuru</au><au>Song, Donghui</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Elucidating polyethylene microplastic degradation mechanisms and metabolic pathways via iron-enhanced microbiota dynamics in marine sediments</atitle><jtitle>Journal of hazardous materials</jtitle><addtitle>J Hazard Mater</addtitle><date>2024-03-15</date><risdate>2024</risdate><volume>466</volume><spage>133655</spage><pages>133655-</pages><artnum>133655</artnum><issn>0304-3894</issn><issn>1873-3336</issn><eissn>1873-3336</eissn><abstract>The extensive use of plastics has given rise to microplastics, a novel environmental contaminant that has sparked considerable ecological and environmental concerns. Biodegradation offers a more environmentally friendly approach to eliminating microplastics, but their degradation by marine microbial communities has received little attention. In this study, we used iron-enhanced marine sediment to augment the natural bacterial community and facilitate the decomposition of polyethylene (PE) microplastics. The introduction of iron-enhanced sediment engendered an augmented bacterial biofilm formation on the surface of polyethylene (PE), thereby leading to a more pronounced degradation effect. This novel observation has been ascribed to the oxidative stress-induced generation of a variety of oxygenated functional groups, including hydroxyl (-OH), carbonyl (-CO), and ether (-C-O) moieties, within the microplastic substrate. The analysis of succession in the community structure of sediment bacteria during the degradation phase disclosed that Acinetobacter and Pseudomonas emerged as the principal bacterial players in PE degradation. These taxa were directly implicated in oxidative metabolic pathways facilitated by diverse oxidase enzymes under iron-facilitated conditions. The present study highlights bacterial community succession as a new pivotal factor influencing the complex biodegradation dynamics of polyethylene (PE) microplastics. This investigation also reveals, for the first time, a unique degradation pathway for PE microplastics orchestrated by the multifaceted marine sediment microbiota. These novel insights shed light on the unique functional capabilities and internal biochemical mechanisms employed by the marine sediment microbiota in effectively degrading polyethylene microplastics.
[Display omitted]
•Natural bacterial microbiota exhibits a crucial role in degradation of microplastics.•Enhancement of iron can significantly improve the biodegradation of microplastics.•Bacterial community succession is a key determinant in degradation of microplastics.•Two degradation pathways of microplastics by marine microbiota have been proposed.</abstract><cop>Netherlands</cop><pub>Elsevier B.V</pub><pmid>38310843</pmid><doi>10.1016/j.jhazmat.2024.133655</doi></addata></record> |
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subjects | Bacterial consortium Degradation mechanism Enhancement of iron Polyethylene (PE) microplastics |
title | Elucidating polyethylene microplastic degradation mechanisms and metabolic pathways via iron-enhanced microbiota dynamics in marine sediments |
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