Exploring the Composition and Functions of Plastic Microbiome Using Whole-Genome Sequencing
| Autor: | Wayne A. O'Connor, Thava Palanisami, Qiyun Zhu, Geetika Bhagwat, Ian Grainge, Suresh R. Subashchandrabose, Rob Knight |
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| Rok vydání: | 2021 |
| Předmět: |
Vibrio alginolyticus
Microplastics biology Ecology Microbiota Environmental pollution General Chemistry 010501 environmental sciences biology.organism_classification 01 natural sciences Vibrio chemistry.chemical_compound chemistry Environmental Chemistry Microbiome Vibrio campbellii Environmental Pollution Xenobiotic Plastic pollution Plastics Water Pollutants Chemical Environmental Monitoring 0105 earth and related environmental sciences |
| Zdroj: | Environmental Science & Technology. 55:4899-4913 |
| ISSN: | 1520-5851 0013-936X |
| Popis: | Besides the ecotoxicological consequences of microplastics and associated chemicals, the association of microbes on plastics has greater environmental implications as microplastics may select for unique microbiome participating in environmentally significant functions. Despite this, the functional potential of the microbiome associated with different types of plastics is understudied. Here, we investigate the interaction between plastic and marine biofilm-forming microorganisms through a whole-genome sequencing approach on four types of microplastics incubated in the marine environment. Taxonomic analysis suggested that the microplastic surfaces exhibit unique microbial profiles and niche partitioning among the substrates. In particular, the abundance of Vibrio alginolyticus and Vibrio campbellii suggested that microplastic pollution may pose a potential risk to the marine food chain and negatively impact aquaculture industries. Microbial genera involved in xenobiotic compound degradation, carbon cycling, and genes associated with the type IV secretion system, conjugal transfer protein TraG, plant-pathogen interaction, CusA/CzcA family heavy metal efflux transfer proteins, and TolC family proteins were significantly enriched on all the substrates, indicating the variety of processes operated by the plastic-microbiome. The present study gives a detailed characterization of the rapidly altering microbial composition and gene pools on plastics and adds new knowledge surrounding the environmental ramifications of marine plastic pollution. |
| Databáze: | OpenAIRE |
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