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Potential plastic biodegradation in lakes worldwide.
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Scientists studied lakes worldwide and found naturally occurring bacteria that can break down plastic waste, and they even isolated a new strain that effectively degrades common plastics like PET (used in bottles) and PLA (a "biodegradable" plastic). This matters because it could lead to new tools for cleaning up plastic pollution in our water systems, pollution that eventually breaks down into microplastics that end up in the food and water we consume.
Plastic pollution is ubiquitous, yet the biodegradation of plastic waste remains poorly understood due to limited knowledge of microbial plastic degradation potential. Here, we demonstrate that plastic waste shapes the global distribution of plastic-degrading potential across 182,661 lakes worldwide using integrated metagenomic and machine learning analyses and identify a tipping point (≥7.44 particles/m) for effective bioremediation. We constructed, for the first time, a catalog of candidate plastic-degrading bacteria, including 15,715 nonredundant enzyme homologs and 4,856 metagenome-assembled genomes. To facilitate future applications, we developed a computational approach to categorizing candidate plastic-degrading bacteria according to their degradation potential, ecological risk, environmental adaptation, and competition capacity. Furthermore, we customized eight template culture media based on the growth factor biosynthesis profiles of high-priority candidate plastic-degrading bacteria. Using these media, we successfully enriched the plastic-degrading microbial communities and isolated a high-priority strain, HfyG-1, from Xiazhu Lake, which harbors a wide variety of previously uncharacterized putative degrading enzymes that effectively degrade polylactic acid and polyethylene terephthalate. Our study provides a molecular resource for the bioremediation of plastic-polluted environments worldwide and highlights a proof-of-concept framework for identifying, investigating, and exploiting unknown functional microorganisms for practical applications.
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Isolation and Characterization of PET-Degrading Bacteria from Plastic Waste- Contaminated Soil in Western India
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Scientists found bacteria living in plastic-polluted soil in India that can actually break down PET plastic (the type used in water bottles and food packaging). This matters because PET plastic pollution is a major source of the microplastics now found in our food, water, and even our bodies — and these natural bacteria could eventually help clean up plastic waste before it breaks down into the tiny particles that pose health risks.
The global potential of freshwater microbes for plastic degradation.
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Scientists scanned nearly 1,000 water samples from lakes and rivers worldwide and discovered thousands of naturally occurring microbes that carry genes capable of breaking down plastic, including 11 microbes with a complete toolkit for degrading polystyrene (the material in Styrofoam). This matters because plastic pollution, including the microplastics increasingly found in our food, water, and even bloodstream, is a growing health concern, and these findings could help scientists develop eco-friendly, bacteria-based methods to clean up plastic waste before it accumulates in our environment and bodies.
Microplastic Associated Microorganisms: Isolation, Identification and Assessment of Biofilm-Based Degradation Potential
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Scientists found naturally occurring bacteria and fungi living on microplastics in polluted soil and water that can actually break down these tiny plastic particles over time. This matters because microplastics are showing up everywhere—including in our food, water, and bodies—and these microbe-based cleanup methods could offer a more natural, sustainable way to reduce plastic pollution before it accumulates further in our environment and, potentially, our health.
Biodegradation of low-density polyethylene (LDPE) and polyethylene terephthalate (PET) by indigenous bacterial isolates from dump yard soils
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Scientists found bacteria living in soil at plastic dump sites that can actually break down common plastics like water bottles (PET) and plastic bags (LDPE) — and when these bacteria teamed up in groups, they broke down plastic even faster (up to 61% for PET) than working alone. This matters because plastic waste doesn't just clog landfills — it breaks into microplastics that end up in our water, food, and even our bodies, so finding natural ways to break down plastic waste before it fragments could help reduce our overall exposure over time.
In Vitro Degradation of Polyethylene Terephthalate using Pseudomonas species
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Scientists found bacteria in wastewater sludge—naturally occurring, not lab-engineered—that can break down PET plastic (the type used in water bottles), with one strain called *Pseudomonas stutzeri* eating away nearly a third of a plastic sample's weight over two months. This matters because PET plastic breaks down into microplastics that pollute our environment and end up in our food and water, so finding natural microbes that can safely degrade it could lead to more eco-friendly ways to manage plastic waste. Interestingly, combining bacteria didn't work better than using one strain alone, showing that plastic-eating micro
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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.