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Cyanobacterial Extracellular Polymeric Substances (EPS)

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Polysaccharides of Microbial Origin

Abstract

Cyanobacteria are a very particular group of photoautotrophic prokaryotic organisms with major ecological significance in the carbon and nitrogen cycles. Most cyanobacterial strains produce extracellular polymeric substances (EPS), mainly heteropolysaccharides that can remain attached to cell surface or be released into the extracellular environment (RPS). These EPS play prominent roles on cell protection and biofilms/colonies formation, and have distinct features compared to other bacterial EPS. Here, we review the cyanobacterial EPS biological roles, what is known/can be inferred about their biosynthetic pathways, and describe their particularly complex composition/structure. In addition, we address how to optimize the production and yield, and how to tailor the polymers either by genetic manipulation or by chemical modification. At last, already implemented applications as well as promising ones are discussed foreseeing the commercialization of cyanobacterial EPS-based products.

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Acknowledgments

This work was financed by FEDER – Fundo Europeu de Desenvolvimento Regional funds through the COMPETE2020 – Operacional Programme for Competitiveness and Internationalisation (POCI), Portugal 2020, and by Portuguese funds through FCT – Fundação para a Ciência e a Tecnologia/Ministério da Ciência, Tecnologia e Ensino Superior in the framework of the project POCI-01-0145-FEDER-028779 (PTDC/BIA-MIC/28779/2017).

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Authors and Affiliations

  1. i3S – Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal

    Rita Mota, Carlos Flores & Paula Tamagnini

  2. IBMC – Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal

    Rita Mota, Carlos Flores & Paula Tamagnini

  3. Departamento de Biologia, Faculdade de Ciências, Universidade do Porto, Porto, Portugal

    Paula Tamagnini

  4. Centre for Urological Biology, Department of Renal Medicine, University College London, London, UK

    Paula Tamagnini

  5. Centre for Urological Biology, Department of Renal Medicine, University College London, London, UK

    Carlos Flores

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  1. Rita Mota
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  3. Paula Tamagnini
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Correspondence to Paula Tamagnini .

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Editors and Affiliations

  1. 3Bs Research Grp, Zona Indus da Gan, University of Minho, BARCO GMR, Portugal

    Joaquim Miguel Oliveira

  2. 3Bs Research Grp, Zona Indus da Gan, University of Minho, BARCO GMR, Portugal

    Hajer Radhouani

  3. 3Bs Research Grp, Zona Indus da Gan, University of Minho, BARCO GMR, Portugal

    Rui L. Reis

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Mota, R., Flores, C., Tamagnini, P. (2021). Cyanobacterial Extracellular Polymeric Substances (EPS). In: Oliveira, J.M., Radhouani, H., Reis, R.L. (eds) Polysaccharides of Microbial Origin. Springer, Cham. https://doi.org/10.1007/978-3-030-35734-4_11-1

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  • DOI: https://doi.org/10.1007/978-3-030-35734-4_11-1

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