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Gut microbiome of mealworms (Tenebrio molitor Larvae) show similar responses to polystyrene and corn straw diets
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Researchers compared the gut microbiomes of mealworms fed polystyrene plastic versus corn straw and found strikingly similar microbial community responses to both diets. The findings suggest that the ability of mealworm larvae to break down plastics likely evolved from ancient biological mechanisms originally designed to digest natural plant fibers like lignocellulose. The study points to mealworm gut bacteria as a potential resource for developing biological plastic degradation strategies.
The high similarity of gut microbiomes adapted to biodegradation of PS and CS indicated the plastics-degrading ability of the T. molitor larvae originated through an ancient mechanism that degrades the natural lignocellulose. Video Abstract.
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Researchers found that mealworm larvae successfully degrade polystyrene under different feeding strategies, with gut microbiome composition and degradation byproduct profiles varying by diet, demonstrating that diet manipulation can optimize the biological plastic-degradation capacity of the mealworm system.
Isolation of Plastic Digesting Microbes from the Gastrointestinal Tract of Tenebrio Molitor
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Researchers isolated bacteria from the gut of Tenebrio molitor mealworm larvae that are capable of degrading polystyrene and polyethylene microplastics. The identified gut microbes showed plastic-degrading enzymatic activity, suggesting potential for bioremediation applications.
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Researchers found that mealworms (Tenebrio molitor) fed expanded polystyrene (EPS) showed significant changes in intestinal microbiota composition compared to controls, suggesting gut microbiome shifts accompany the biological degradation of polystyrene microplastics.
Responses of gut microbiomes to commercial polyester polymer biodegradation in Tenebrio molitor Larvae
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Researchers demonstrated that mealworms (Tenebrio molitor) can rapidly biodegrade commercial polyethylene terephthalate microplastics, with gut microbiome analysis revealing specific bacterial communities that shift in response to PET consumption and enable its breakdown.
Optimizing polystyrene degradation, microbial community and metabolite analysis of intestinal flora of yellow mealworms, Tenebrio molitor.
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Yellow mealworm larvae fed only expanded polystyrene were found to biodegrade the plastic, with the efficiency depending on temperature and humidity conditions. The gut microbiome of the larvae played a key role, and researchers identified metabolic pathways involved in polystyrene breakdown, advancing understanding of insect-based plastic biodegradation.
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