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Toxic effects and metabolic response mechanisms of amino-modified polystyrene nanoplastics and arsenic on Microcystis aeruginosa
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Researchers investigated the combined effects of amine-modified polystyrene nanoplastics and arsenic on a common freshwater cyanobacterium. They found that co-exposure intensified cellular stress, disrupted metabolic processes, and promoted the release of harmful toxins beyond what either pollutant caused individually. The findings reveal previously unrecognized risks to freshwater ecosystems when nanoplastics interact with heavy metal contaminants.
This study uncovers how co-exposure to PSNPs-NH 2 and arsenic intensifies cyanobacterial stress, disrupts metabolism, and promotes toxin release, revealing new risks to aquatic stability and pollutant behavior.
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Nanoplastics Promote Microcystin Synthesis and Release from Cyanobacterial Microcystis aeruginosa
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Researchers discovered that amino-modified polystyrene nanoplastics promote both the production and release of microcystin, a harmful toxin, from the cyanobacterium Microcystis aeruginosa. The nanoplastics inhibited photosynthesis, induced oxidative stress, and damaged cell membranes, which enhanced toxin synthesis and extracellular release. The findings suggest that nanoplastic pollution in freshwater ecosystems could worsen the threat of harmful algal blooms to aquatic ecology and human health.
Toxicity effects of polystyrene nanoplastics and arsenite on Microcystis aeruginosa
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Researchers studied how two types of polystyrene nanoplastics with different surface properties interact with arsenic to affect freshwater algae. They found that nanoplastics with a sulfonic acid surface modification caused more severe growth inhibition and metabolic disruption in the algae, while both types reduced arsenic uptake by the organisms. The study highlights that the specific surface chemistry of nanoplastics significantly influences their environmental toxicity.
Microcystis aeruginosa's exposure to an antagonism of nanoplastics and MWCNTs: The disorders in cellular and metabolic processes
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Researchers examined the combined effects of polystyrene nanoplastics and multi-walled carbon nanotubes on the cyanobacterium Microcystis aeruginosa, discovering antagonistic interactions that disrupted cellular and metabolic processes in this freshwater organism.
Micro- and nanoplastic stress intensifies Microcystis aeruginosa physiology and toxin risks under environmentally relevant water chemistry conditions
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Researchers exposed the cyanobacterium Microcystis aeruginosa to environmentally relevant concentrations of micro- and nanoplastics, finding both significantly enhanced algal biomass and microcystin toxin production, with nanoplastics additionally promoting extracellular toxin release.
Combined effects of microplastics and excess boron on Microcystis aeruginosa
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Researchers studied the combined effects of microplastics and excess boron on a common freshwater cyanobacterium (Microcystis aeruginosa). They found that amino-modified polystyrene microplastics were the most harmful, inhibiting growth and worsening boron toxicity, while other surface-modified types actually stimulated growth. The study reveals that the surface chemistry of microplastics plays a key role in how they interact with other pollutants to affect aquatic microorganisms.
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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.