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Plastisphere in an Antarctic environment: A microcosm approach
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Researchers conducted a microcosm experiment in Antarctic waters to study how microorganisms colonize different types of microplastic surfaces over 33 days. They found that colonization was rapid and consistent across polymer types, though slightly slower than in other oceans, with microbial communities transitioning between early and late biofilm stages around days 12 to 19. The study provides new insight into plastisphere dynamics in polar environments, including the presence of hydrocarbon-degrading bacteria on microplastic surfaces.
Microplastics are present even in remote regions like the Southern Ocean. Once in the water, they are rapidly colonised by marine microorganisms, forming the plastisphere. To address this issue in Antarctic waters, we conducted a microcosm experiment by incubating polypropylene, polyethylene, polystyrene microplastic pellets, and quartz for 33 days on Livingston Island, South Shetland Islands, Antarctica. We analysed plastic colonisation and plastisphere dynamics using scanning electron microscopy, flow cytometry, bacterial cultivation, qPCR, and 16S rRNA gene metabarcoding. Our results show rapid and consistent colonisation, although biomass formation was slightly slower than in other oceans, indicating unique environmental constraints. Time was the main factor influencing biofilm communities, while plastic polymer types had little effect. We observed a transition in microbial communities from early- to late-biofilm stages between days 12 and 19. Additionally, we described the bacterial plastisphere composition in this Antarctic environment, including the presence of hydrocarbon-degrading bacteria.
More Papers Like This
Plastisphere colonization in Antarctica: a microcosmos approach
AI summary Read the abstract
Researchers investigated the Antarctic plastisphere by incubating polypropylene, polyester, polystyrene, and quartz fragments in seawater microcosms for 33 days, using SEM, flow cytometry, qPCR, and metagenomics to track microbial colonization dynamics. They found that biofilm formation occurred rapidly but at slower growth rates than other oceanic regions, with time rather than polymer type driving community succession, and identified Oleispira as a genus of interest for potential hydrocarbon degradation.
Plastisphere colonization in Antarctica: a microcosmos approach
AI summary Read the abstract
Researchers conducted a 33-day microcosm experiment incubating polypropylene, polyester, polystyrene, and quartz fragments in Antarctic seawater and used SEM, flow cytometry, qPCR, and metagenomics to characterize bacterial plastisphere colonization, finding that microbial community composition was driven primarily by incubation time rather than polymer type, with Oleispira potentially involved in hydrocarbon degradation.
Early Microbial Colonization and Surface Oxidation of Plastics in Antarctic Coastal Waters: A Time-Series Study
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Researchers placed samples of three plastic types in Antarctic coastal waters for 31 days to study how microbes colonize their surfaces and how the plastic surfaces chemically change. Microbial communities shifted over time more than they differed by plastic type, and two plastics (polystyrene and polyethylene) showed increasing surface oxidation, while a third (PET) did not show consistent change.
The structure and assembly mechanisms of plastisphere microbial community in natural marine environment
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Researchers investigated how microbial communities colonize different types of microplastic surfaces in natural marine environments over an eight-week period. They found that the composition of these plastic-associated microbial communities, known as the plastisphere, was shaped more by environmental conditions and time than by the specific type of plastic. The study provides new understanding of the ecological processes governing how microorganisms assemble on ocean plastic debris.
Short‐term plastisphere colonization dynamics across six plastic types
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Researchers studied the short-term colonization dynamics of microbial communities (plastisphere) forming on six plastic polymer types submerged in marine waters in South Australia, finding polymer-type-specific differences in prokaryotic community composition over four weeks.
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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.