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Microbially driven microplastic degradation: From mining functional microbiota to enhancing remediation potential in diverse environments
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Microplastics—tiny plastic bits linked to health concerns—are piling up in soil, water, and even animal guts, but scientists are finding a natural cleanup crew: bacteria and other microbes that can break them down. This review pulled together findings from 78 studies to identify which microbes work best in which environments (soil-dwelling ones were most effective overall), creating a roadmap for using these organisms in real-world pollution cleanup rather than just lab experiments. While this research focuses on environmental remediation rather than direct human health testing, reducing microplastic pollution at its source could ultimately lower our exposure through food, water
Microplastic (MPs) pollution poses a global threat to ecosystems and human health. Traditional physicochemical methods face limitations like high cost, inefficiency, and secondary pollution, underscoring the need for green remediation. While microbial degradation holds promise, research remains largely limited to lab studies of single environments, lacking systematic multi-environment strain collections and practical application assessments. This review summarizes common screening/validation methods, degradation mechanisms, and influencing factors of microplastic-degrading microorganisms (MPDMs). By reviewing 78 studies, 197 degrading microorganisms/taxa from four typical environments (soil, marine, freshwater, animal gut) were sorted, with 152 analyzed for degradation efficiency. The degradation efficiencies across different environments were compared, with the maximum efficiency order being soil > freshwater > marine > animal gut, and the overall average efficiency order being soil ≈ freshwater > marine ≈ animal gut. Recommendations for efficient culture conditions were proposed for different environments, and high-potential strains were recommended, including multi-environment efficient ones (e.g., Bacillus and multiple bacterial consortia) and environment-specific superior strains (e.g., Rhodococcus, Oceanimonas, and Enterobacter). Finally, methods such as dominant strain screening, acclimatization, genetic engineering modification, and synthetic taxa construction via machine learning are proposed to enhance practical applicability. This study not only establishes a scenario-specific microbial remediation resource pool and quantifies their degradation efficiencies, providing critical data support and strategic guidance for the development of in-situ microbial remediation technologies at targeted contaminated sites, but also lays a solid foundation for translating laboratory findings into practical field applications in future research.
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Microbial Bioremediation of Microplastics
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Tiny plastic bits called microplastics are now everywhere in our environment—and even in our bodies—raising concerns about long-term health effects. This review paper rounds up what scientists currently know about using bacteria and other microbes to break down these plastic particles, a promising cleanup strategy, while also pointing out the challenges researchers still need to solve before it works at scale. The takeaway: nature may offer tools to help tackle plastic pollution, but we're not there yet, so reducing microplastic use in the first place still matters for protecting our health.
Microbial Degradation of Plastics: Mechanisms, Pathways, and Multiomics Insights
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Scientists are exploring how to use bacteria and other microbes to break down plastic waste, since plastic pollution can pose risks to ecosystems and human health. This review pulls together existing research on how these microbes work and points out that results vary so much between studies that it's hard to tell which methods might actually work in the real world. The takeaway: microbial plastic cleanup is a promising idea, but it needs more consistent testing before it can move from the lab to actually reducing plastic pollution (and the microplastics we're exposed to) at scale.
Review of microplastic degradation: Understanding metagenomic approaches for microplastic degrading organisms
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This review explores how metagenomics, the study of genetic material from environmental samples, is helping scientists identify microorganisms that can break down plastics. The paper covers the methods used to find and characterize plastic-degrading bacteria, as well as the environmental consequences of plastic degradation including health risks from inhaling and ingesting microplastics. While biological solutions to plastic pollution show promise, the review notes that more research is needed to develop effective, scalable approaches.
Bacteria as Ecological Tools: Pioneering Microplastic Biodegradation
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This systematic review examines how bacteria can be used to biologically break down microplastic particles. The researchers identified several bacterial species capable of degrading different types of plastics, offering a potential natural solution to microplastic pollution. Finding biological methods to break down microplastics could reduce the amount of these particles that accumulate in our environment and food chain.
Microbial remediation of microplastic-contaminated soil, focusing on mechanisms, benefits, and research gaps
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This systematic review examines microbial bioremediation of microplastic-contaminated soils, covering the sources and distribution of soil microplastics, their physicochemical interactions with soil microbiomes, and the mechanisms by which soil-dwelling bacteria and fungi degrade plastic polymers.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.