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Lignocellulose-mediated selection of halophilic PET-degrading enzymes from mangrove soil
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Researchers used microcosm experiments with mangrove soil — an ecosystem exposed to both plant biomass and plastic pollution — to screen for halophilic enzymes capable of degrading PET, leveraging the soil's rich microbial diversity as a source of novel polymer-degrading candidates.
Mangroves are ecosystems located in land-sea transition zones, where they are continuously exposed to plant biomass inputs and plastic pollution. Their soils harbor extensive microbial diversity with potential for discovering polymer-degrading enzymes. Here, we performed a microcosm experiment...
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Lignocellulose-mediated selection of potential halophilic PET-degrading enzymes from mangrove soil
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Researchers incubated mangrove soil with lignocellulose or PET under varying salinity conditions and used metagenomics to identify 12 putative PETase enzymes, including two from Microbulbifer species with novel structural features, demonstrating that enriching environmental microbiomes with plant-derived polymers selectively amplifies plastic-degrading enzyme diversity in halophilic microbial communities.
Engineering the mangrove soil microbiome for selection of polyethylene terephthalate-transforming bacterial consortia.
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Researchers engineered enrichment cultures from mangrove soil to select bacterial consortia capable of transforming polyethylene terephthalate (PET), finding via metagenome-assembled genomes that PET catabolism was distributed across multiple taxa harbouring putative novel PET-active hydrolases. They also described a novel species, Mangrovimarina plasticivorans, as a key consortium member containing genes for PET monomer metabolism.
Isolation and Identification of Four Strains of Bacteria with Potential to Biodegrade Polyethylene and Polypropylene from Mangrove
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Researchers screened mangrove sediment and surface water bacteria for the ability to biodegrade polyethylene and polypropylene microplastics, successfully isolating four candidate strains. The identified bacteria showed measurable plastic degradation activity, highlighting mangrove ecosystems as a source of novel plastic-degrading microorganisms.
Exploring untapped bacterial communities and potential polypropylene-degrading enzymes from mangrove sediment through metagenomics analysis
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Researchers used metagenomics analysis to explore bacterial communities in mangrove sediments that may be capable of breaking down polypropylene plastic. The study compared microbial communities exposed to virgin and chemically pretreated polypropylene over several months. Evidence indicates that certain bacterial taxa in mangrove environments possess enzymes with potential polypropylene-degrading activity, suggesting possible biological pathways for plastic waste remediation.
Bioremediation of microplastic using microbes isolated from mangrove sediments / Helen Shnada Auta
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Twenty-two bacteria isolated from plastic-contaminated mangrove sediments were screened for the ability to degrade common plastic polymers including PE, PP, PET, and PS, with nine isolates showing degradation activity. The findings suggest that mangrove ecosystems harbor microbes with potential for bioremediation of plastic pollution in marine and coastal environments.
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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.