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Distinct microbial metabolic activities of biofilms colonizing microplastics in three freshwater ecosystems

Journal of Hazardous Materials 2020 160 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 45 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.
Lingzhan Miao, Lingzhan Miao, Lingzhan Miao, Zhilin Liu, Yue Yu, Lingzhan Miao, Lingzhan Miao, Lingzhan Miao, Lingzhan Miao, Lingzhan Miao, Lingzhan Miao, Lingzhan Miao, Lingzhan Miao, Chengqian Wang, Chengqian Wang, Tanveer M. Adyel Tanveer M. Adyel Tanveer M. Adyel Jun Hou, Tanveer M. Adyel Lingzhan Miao, Lingzhan Miao, Lingzhan Miao, Jun Hou, Jun Hou, Jun Hou, Jun Hou, Chengqian Wang, Tanveer M. Adyel Jun Hou, Jun Hou, Chengqian Wang, Jun Hou, Jun Hou, Jun Hou, Jun Hou, Lingzhan Miao, Lingzhan Miao, Lingzhan Miao, Yue Yu, Zhilin Liu, Liuyan Huang, Lingzhan Miao, Lingzhan Miao, Lingzhan Miao, Liuyan Huang, Tanveer M. Adyel Tanveer M. Adyel Tanveer M. Adyel Lingzhan Miao, Lingzhan Miao, Tanveer M. Adyel Tanveer M. Adyel Guoxiang You, Jun Hou, Tanveer M. Adyel Lingzhan Miao, Lingzhan Miao, Jun Hou, Tanveer M. Adyel Lingzhan Miao, Tanveer M. Adyel Jun Hou, Jun Hou, Tanveer M. Adyel Zhilin Liu, Songqi Liu, Lingzhan Miao, Tanveer M. Adyel Chengqian Wang, Lingzhan Miao, Guoxiang You, Guoxiang You, Jun Hou, Zhilin Liu, Jun Hou, Jun Hou, Guoxiang You, Tanveer M. Adyel Lingzhan Miao, Lingzhan Miao, Zhilin Liu, Tanveer M. Adyel Lingzhan Miao, Tanveer M. Adyel Jun Hou, Lingzhan Miao, Lingzhan Miao, Zhilin Liu, Zhilin Liu, Zhilin Liu, Songqi Liu, Guoxiang You, Meng Meng, Guoxiang You, Guoxiang You, Guoxiang You, Lingzhan Miao, Lingzhan Miao, Lingzhan Miao, Lingzhan Miao, Lingzhan Miao, Lingzhan Miao, Lingzhan Miao, Lingzhan Miao, Lingzhan Miao, Yue Yu, Lingzhan Miao, Yue Yu, Songqi Liu, Songqi Liu, Songqi Liu, Songqi Liu, Hao Qu, Lingzhan Miao, Lingzhan Miao, Lingzhan Miao, Lingzhan Miao, Lingzhan Miao, Tanveer M. Adyel Tanveer M. Adyel Jun Hou, Zhilin Liu, Jun Hou, Liuyan Huang, Lingzhan Miao, Lingzhan Miao, Jun Hou, Liuyan Huang, Jun Hou, Meng Meng, Jun Hou, Jun Hou, Jun Hou, Guoxiang You, Hao Qu, Jun Hou, Jun Hou, Tanveer M. Adyel Meng Meng, Liuyan Huang, Hao Qu, Tanveer M. Adyel Jun Hou, Jun Hou, Jun Hou, Guoxiang You, Liuyan Huang, Guoxiang You, Tanveer M. Adyel Hao Qu, Tanveer M. Adyel Jun Hou, Jun Hou, Tanveer M. Adyel Jun Hou, Tanveer M. Adyel

Summary

Biofilms growing on microplastics in three freshwater ecosystems showed distinct patterns of carbon metabolism compared to biofilms on glass, with PET-colonizing biofilms showing lower metabolic diversity. Environmental factors like nutrient levels and turbidity also shaped biofilm function, suggesting microplastics alter microbial-mediated carbon cycling in rivers and lakes.

Study Type Environmental

Concerns are growing about the increasing amounts of microplastics (MPs) and their ecological impacts, especially the influences of "plastisphere" in the freshwater ecosystems. Although the microbial structure and composition of biofilms are investigated, knowledge of their microbial functions remains limited. Herein, we investigated the functional diversity of carbon metabolism in biofilms colonizing one inert (glass) and two MPs as polyvinyl chloride (PVC) and polyethylene terephthalate (PET) substrates incubated for 44 days in situ in the Niushoushan River, the Qinhuai River, and Donghu Lake. 2D confocal laser scanning microscopy images visualized distinct micro-structures and biofilm compositions on three substrates. BIOLOG ECO microplates indicated variation on carbon utilization capacities of biofilms of inert and MPs in three freshwater ecosystems. Biofilms on PET showed lower capacities and carbon metabolism rates than those on glass and PVC, indicating the presence of substrate-specific functional diversity. The Shannon-Wiener diversity, Simpson diversity and Shannon evenness indices for the Niushoushan River and Donghu Lake were ordered as glass > PVC > PET. Besides to MPs-specific factors, environmental factors including nutrient (i.e., TN and TP) and turbidity largely shaped biofilm carbon metabolism. Overall findings demonstrated that as specific niches, MPs influenced microbial-mediated carbon cycling in the freshwater ecosystems and MPs-promoted microbial communities posed ecological significance.

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