Abstract
Polyethylene is a plastic pollutant impacting marine life, calling for advanced remediation methods such as biodegradation. However, there is actually limited information on polyethylene-degrading bacteria in the marine environment. Here, we studied bacterial degradation of polyethylene and associated phthalates additives using scanning electron microscopy, Fourier transform infrared, gel permeation chromatography and genomic and transcriptomic techniques. Results show that a deep-sea bacteria, Acinetobacter venetianus F1, can degrade 12.2% of polyethylene after 56 days, following the alkane metabolic pathway. Phthalates were also degraded via the metabolic pathways of benzoic acid and phthalic acid. This is first report of polyethylene-degrading bacteria from deep-sea environments.
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Acknowledgements
Thank Dr. Songbiao Shi for his help in analyzing the genome.
Funding
National Natural Science Foundation of China (41890853); Guangdong Major Project of Basic and Applied Basic Research (2019B030302004); Science and Technology Projects of Guangzhou (202201010304); Guangdong Basic and Applied Basic Research Foundation (2021A1515110816); Development fund of South China Sea Institute of Oceanology of the Chinese Academy of Sciences (SCSIO202202).
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LL did conceptualization, experiment, original draft, reviewing and editing and funding acquisition. KF performed experiment and visualization. XH provided validation. XT analyzed conceptualization, reviewing and editing. SZ carried out conceptualization, resources, reviewing and editing and funding acquisition.
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Lyu, L., Fang, K., Huang, X. et al. Polyethylene is degraded by the deep-sea Acinetobacter venetianus bacterium. Environ Chem Lett (2024). https://doi.org/10.1007/s10311-024-01708-4
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DOI: https://doi.org/10.1007/s10311-024-01708-4