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Away from darkness: a review on the effects of solar radiation on heterotrophic bacterioplankton activity
Heterotrophic bacterioplankton are main consumers of dissolved organic matter (OM) in aquatic ecosystems, including the sunlit upper layers of the ocean and freshwater bodies. Their well-known sensitivity to ultraviolet radiation (UVR), together with some recently discovered mechanisms bacteria have...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Frontiers Media S.A.
2013
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3661993/ https://www.ncbi.nlm.nih.gov/pubmed/23734148 http://dx.doi.org/10.3389/fmicb.2013.00131 |
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author | Ruiz-González, Clara Simó, Rafel Sommaruga, Ruben Gasol, Josep M. |
author_facet | Ruiz-González, Clara Simó, Rafel Sommaruga, Ruben Gasol, Josep M. |
author_sort | Ruiz-González, Clara |
collection | PubMed |
description | Heterotrophic bacterioplankton are main consumers of dissolved organic matter (OM) in aquatic ecosystems, including the sunlit upper layers of the ocean and freshwater bodies. Their well-known sensitivity to ultraviolet radiation (UVR), together with some recently discovered mechanisms bacteria have evolved to benefit from photosynthetically available radiation (PAR), suggest that natural sunlight plays a relevant, yet difficult to predict role in modulating bacterial biogeochemical functions in aquatic ecosystems. Three decades of experimental work assessing the effects of sunlight on natural bacterial heterotrophic activity reveal responses ranging from high stimulation to total inhibition. In this review, we compile the existing studies on the topic and discuss the potential causes underlying these contrasting results, with special emphasis on the largely overlooked influences of the community composition and the previous light exposure conditions, as well as the different temporal and spatial scales at which exposure to solar radiation fluctuates. These intricate sunlight-bacteria interactions have implications for our understanding of carbon fluxes in aquatic systems, yet further research is necessary before we can accurately evaluate or predict the consequences of increasing surface UVR levels associated with global change. |
format | Online Article Text |
id | pubmed-3661993 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | Frontiers Media S.A. |
record_format | MEDLINE/PubMed |
spelling | pubmed-36619932013-06-03 Away from darkness: a review on the effects of solar radiation on heterotrophic bacterioplankton activity Ruiz-González, Clara Simó, Rafel Sommaruga, Ruben Gasol, Josep M. Front Microbiol Microbiology Heterotrophic bacterioplankton are main consumers of dissolved organic matter (OM) in aquatic ecosystems, including the sunlit upper layers of the ocean and freshwater bodies. Their well-known sensitivity to ultraviolet radiation (UVR), together with some recently discovered mechanisms bacteria have evolved to benefit from photosynthetically available radiation (PAR), suggest that natural sunlight plays a relevant, yet difficult to predict role in modulating bacterial biogeochemical functions in aquatic ecosystems. Three decades of experimental work assessing the effects of sunlight on natural bacterial heterotrophic activity reveal responses ranging from high stimulation to total inhibition. In this review, we compile the existing studies on the topic and discuss the potential causes underlying these contrasting results, with special emphasis on the largely overlooked influences of the community composition and the previous light exposure conditions, as well as the different temporal and spatial scales at which exposure to solar radiation fluctuates. These intricate sunlight-bacteria interactions have implications for our understanding of carbon fluxes in aquatic systems, yet further research is necessary before we can accurately evaluate or predict the consequences of increasing surface UVR levels associated with global change. Frontiers Media S.A. 2013-05-23 /pmc/articles/PMC3661993/ /pubmed/23734148 http://dx.doi.org/10.3389/fmicb.2013.00131 Text en Copyright © 2013 Ruiz-González, Simó, Sommaruga and Gasol. http://creativecommons.org/licenses/by/3.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in other forums, provided the original authors and source are credited and subject to any copyright notices concerning any third-party graphics etc. |
spellingShingle | Microbiology Ruiz-González, Clara Simó, Rafel Sommaruga, Ruben Gasol, Josep M. Away from darkness: a review on the effects of solar radiation on heterotrophic bacterioplankton activity |
title | Away from darkness: a review on the effects of solar radiation on heterotrophic bacterioplankton activity |
title_full | Away from darkness: a review on the effects of solar radiation on heterotrophic bacterioplankton activity |
title_fullStr | Away from darkness: a review on the effects of solar radiation on heterotrophic bacterioplankton activity |
title_full_unstemmed | Away from darkness: a review on the effects of solar radiation on heterotrophic bacterioplankton activity |
title_short | Away from darkness: a review on the effects of solar radiation on heterotrophic bacterioplankton activity |
title_sort | away from darkness: a review on the effects of solar radiation on heterotrophic bacterioplankton activity |
topic | Microbiology |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3661993/ https://www.ncbi.nlm.nih.gov/pubmed/23734148 http://dx.doi.org/10.3389/fmicb.2013.00131 |
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