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The importance of filamentous cyanobacteria in the development of oxygenic photogranules
Microorganisms often respond to their environment by growing as densely packed communities in biofilms, flocs or granules. One major advantage of life in these aggregates is the retention of its community in an ecosystem despite flowing water. We describe here a novel type of granule dominated by fi...
Autores principales: | , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5738420/ https://www.ncbi.nlm.nih.gov/pubmed/29263358 http://dx.doi.org/10.1038/s41598-017-16614-9 |
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author | Milferstedt, Kim Kuo-Dahab, W. Camilla Butler, Caitlyn S. Hamelin, Jérôme Abouhend, Ahmed S. Stauch-White, Kristie McNair, Adam Watt, Christopher Carbajal-González, Blanca I. Dolan, Sona Park, Chul |
author_facet | Milferstedt, Kim Kuo-Dahab, W. Camilla Butler, Caitlyn S. Hamelin, Jérôme Abouhend, Ahmed S. Stauch-White, Kristie McNair, Adam Watt, Christopher Carbajal-González, Blanca I. Dolan, Sona Park, Chul |
author_sort | Milferstedt, Kim |
collection | PubMed |
description | Microorganisms often respond to their environment by growing as densely packed communities in biofilms, flocs or granules. One major advantage of life in these aggregates is the retention of its community in an ecosystem despite flowing water. We describe here a novel type of granule dominated by filamentous and motile cyanobacteria of the order Oscillatoriales. These bacteria form a mat-like photoactive outer layer around an otherwise unconsolidated core. The spatial organization of the phototrophic layer resembles microbial mats growing on sediments but is spherical. We describe the production of these oxygenic photogranules under static batch conditions, as well as in turbulently mixed bioreactors. Photogranulation defies typically postulated requirements for granulation in biotechnology, i.e., the need for hydrodynamic shear and selective washout. Photogranulation as described here is a robust phenomenon with respect to inoculum characteristics and environmental parameters like carbon sources. A bioprocess using oxygenic photogranules is an attractive candidate for energy-positive wastewater treatment as it biologically couples CO(2) and O(2) fluxes. As a result, the external supply of oxygen may become obsolete and otherwise released CO(2) is fixed by photosynthesis for the production of an organic-rich biofeedstock as a renewable energy source. |
format | Online Article Text |
id | pubmed-5738420 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-57384202017-12-22 The importance of filamentous cyanobacteria in the development of oxygenic photogranules Milferstedt, Kim Kuo-Dahab, W. Camilla Butler, Caitlyn S. Hamelin, Jérôme Abouhend, Ahmed S. Stauch-White, Kristie McNair, Adam Watt, Christopher Carbajal-González, Blanca I. Dolan, Sona Park, Chul Sci Rep Article Microorganisms often respond to their environment by growing as densely packed communities in biofilms, flocs or granules. One major advantage of life in these aggregates is the retention of its community in an ecosystem despite flowing water. We describe here a novel type of granule dominated by filamentous and motile cyanobacteria of the order Oscillatoriales. These bacteria form a mat-like photoactive outer layer around an otherwise unconsolidated core. The spatial organization of the phototrophic layer resembles microbial mats growing on sediments but is spherical. We describe the production of these oxygenic photogranules under static batch conditions, as well as in turbulently mixed bioreactors. Photogranulation defies typically postulated requirements for granulation in biotechnology, i.e., the need for hydrodynamic shear and selective washout. Photogranulation as described here is a robust phenomenon with respect to inoculum characteristics and environmental parameters like carbon sources. A bioprocess using oxygenic photogranules is an attractive candidate for energy-positive wastewater treatment as it biologically couples CO(2) and O(2) fluxes. As a result, the external supply of oxygen may become obsolete and otherwise released CO(2) is fixed by photosynthesis for the production of an organic-rich biofeedstock as a renewable energy source. Nature Publishing Group UK 2017-12-20 /pmc/articles/PMC5738420/ /pubmed/29263358 http://dx.doi.org/10.1038/s41598-017-16614-9 Text en © The Author(s) 2017 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Milferstedt, Kim Kuo-Dahab, W. Camilla Butler, Caitlyn S. Hamelin, Jérôme Abouhend, Ahmed S. Stauch-White, Kristie McNair, Adam Watt, Christopher Carbajal-González, Blanca I. Dolan, Sona Park, Chul The importance of filamentous cyanobacteria in the development of oxygenic photogranules |
title | The importance of filamentous cyanobacteria in the development of oxygenic photogranules |
title_full | The importance of filamentous cyanobacteria in the development of oxygenic photogranules |
title_fullStr | The importance of filamentous cyanobacteria in the development of oxygenic photogranules |
title_full_unstemmed | The importance of filamentous cyanobacteria in the development of oxygenic photogranules |
title_short | The importance of filamentous cyanobacteria in the development of oxygenic photogranules |
title_sort | importance of filamentous cyanobacteria in the development of oxygenic photogranules |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5738420/ https://www.ncbi.nlm.nih.gov/pubmed/29263358 http://dx.doi.org/10.1038/s41598-017-16614-9 |
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