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Biofilm formation, occurrence, microbial communication, impact and characterization methods in natural and anthropic systems: a review

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Abstract

A biofilm is a layer of microbes that have aggregated to form a colony. The colony attaches to a surface with a slime layer which protects the microorganisms, promoting their growth and survival. Biofilms occur in various environments such as soils, sediments, wastewater, water pipelines, water purifying systems, cooling water systems, medical devices, archaeological monuments, marine vessels, and hospitals. Biofilms may induce adverse effects such as fostering drug-resistant strains. Here, we review biofilms with focus on their formation, occurrence in water systems, impact, microbial interactions, and characterization methods. Communication includes cell-to-cell interactions by quorum sensing, interactions mediated by flagella, gene, and signaling molecules, and interactions mediated by extracellular polymeric substances. Characterization methods comprise surface-enhanced Raman scattering spectroscopy, confocal laser scanning microscopy, scanning electron microscopy, fluorescence microscopy, sensors, and metagenomics analysis.

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Acknowledgements

Prof. J. Cui acknowledges Science and Technology Innovation 2030 (2023ZD04062), the Youth Innovation Program of Chinese Academy of Agricultural Sciences (Y2023QC23), Young Elite Scientists Sponsorship Program by China Association for Science and Technology (2022QNRC001), Agricultural Science and Technology Innovation Program of Chinese Academy of Agricultural Sciences and China Agriculture Research System. Prof. M.Y. Choi acknowledges the Korea Basic Science Institute (National research Facilities and Equipment Center) grant funded by the Ministry of Education. (No. 2019R1A6C1010042, 2021R1A6C103A427). The authors Prof. M.Y. Choi and Dr. J. Theerthagiri acknowledges the financial support from National Research Foundation of Korea (NRF), (2022R1A2C2010686, 2022R1A4A3033528, 2021R1I1A1A01060380, 2019H1D3A1A01071209). The author, Prof. Soorathep Kheawhom acknowledges The Program Management Unit for Human Resources & Industrial Development, Research & Innovation (B41G670026).

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PE, PP, OPK, and MYC contributed to conceptualization, critical thinking and writing original draft. XG and JC contributed to discussion and review editing. ASK and PD contributed to data collection. JT, SK, and MYC contributed review, proofread and supervision. MYC declares that he is Editor of Environmental Chemistry Letters.

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Correspondence to Xuke Gao, Jinjie Cui, Punniyakotti Parthipan or Myong Yong Choi.

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Elumalai, P., Gao, X., Cui, J. et al. Biofilm formation, occurrence, microbial communication, impact and characterization methods in natural and anthropic systems: a review. Environ Chem Lett 22, 1297–1326 (2024). https://doi.org/10.1007/s10311-024-01715-5

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  • DOI: https://doi.org/10.1007/s10311-024-01715-5

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