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    An In Situ Study to Understand Community Structure of Estuarine Microbes on the Plastisphere.

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    Author
    Sosa, Ana
    Chen, Feng
    Date
    2022-07-29
    Journal
    Microorganisms
    Publisher
    MDPI
    Type
    Article
    
    Metadata
    Show full item record
    See at
    https://doi.org/10.3390/microorganisms10081543
    Abstract
    Microplastics are defined as pieces of plastic that are smaller than 5 mm and they are now considered one of the most abundant ubiquitous plastic debris. Microbial communities that settle on particles can potentially lead to the transport of pathogenic and harmful bloom-forming species, as well as have an impact on global biogeochemical cycles. However, little is known about the acclimation of microbes to different types of microplastic in the estuarine environment. In this study, 16S ribosomal RNA sequencing and analysis was performed on biofilm samples from three different types of microplastic beads placed in Baltimore’s Inner Harbor. Microbial communities associated with microplastic particles and glass bead control were monitored throughout the 28-day incubation time. A significant taxonomic composition dissimilarity was observed between particles-associated and free-living communities, suggesting a unique microbial adaptation to these biofilms. The polymer types, however, did not significantly influence the microbial community composition. Some families with interesting potential metabolism were identified in the plastisphere samples, including Cyanobacteria, Planctomycetes, Desulfobacteriota, and Firmicutes, leading into speculation of their ecological responses and metabolic roles in the estuarine environment. It is crucial to understand the microorganisms that inhabit plastic debris in estuarine systems and their potential metabolic capacity and how it may differ from its marine counterparts in order to assess their roles in global nutrient cycles and if they have ability to be utilized in bioremediation for plastic pollution.
    Keyword
    biofilms
    estuary
    microbial community
    microplastics
    plastisphere
    Identifier to cite or link to this item
    http://hdl.handle.net/10713/19639
    ae974a485f413a2113503eed53cd6c53
    10.3390/microorganisms10081543
    Scopus Count
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