Cargando…

Morphogenesis and oxygen dynamics in phototrophic biofilms growing across a gradient of hydraulic conditions

Biofilms are surface-attached and matrix-enclosed microbial communities that dominate microbial life in numerous ecosystems. Using flumes and automated optical coherence tomography, we studied the morphogenesis of phototrophic biofilms along a gradient of hydraulic conditions. Compact and coalescent...

Descripción completa

Detalles Bibliográficos
Autores principales: Depetris, Anna, Peter, Hannes, Bordoloi, Ankur Deep, Bernard, Hippolyte, Niayifar, Amin, Kühl, Michael, de Anna, Pietro, Battin, Tom Jan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7868926/
https://www.ncbi.nlm.nih.gov/pubmed/33598641
http://dx.doi.org/10.1016/j.isci.2021.102067
_version_ 1783648540037218304
author Depetris, Anna
Peter, Hannes
Bordoloi, Ankur Deep
Bernard, Hippolyte
Niayifar, Amin
Kühl, Michael
de Anna, Pietro
Battin, Tom Jan
author_facet Depetris, Anna
Peter, Hannes
Bordoloi, Ankur Deep
Bernard, Hippolyte
Niayifar, Amin
Kühl, Michael
de Anna, Pietro
Battin, Tom Jan
author_sort Depetris, Anna
collection PubMed
description Biofilms are surface-attached and matrix-enclosed microbial communities that dominate microbial life in numerous ecosystems. Using flumes and automated optical coherence tomography, we studied the morphogenesis of phototrophic biofilms along a gradient of hydraulic conditions. Compact and coalescent biofilms formed under elevated bed shear stress, whereas protruding clusters separated by troughs formed under reduced shear stress. This morphological differentiation did not linearly follow the hydraulic gradient, but a break point emerged around a shear stress of ~0.08 Pa. While community composition did not differ between high and low shear environments, our results suggest that the morphological differentiation was linked to biomass displacement and reciprocal interactions between the biofilm structure and hydraulics. Mapping oxygen concentrations within and around biofilm structures, we provide empirical evidence for biofilm-induced alterations of oxygen mass transfer. Our findings suggest that architectural plasticity, efficient mass transfer, and resistance to shear stress contribute to the success of phototrophic biofilms.
format Online
Article
Text
id pubmed-7868926
institution National Center for Biotechnology Information
language English
publishDate 2021
publisher Elsevier
record_format MEDLINE/PubMed
spelling pubmed-78689262021-02-16 Morphogenesis and oxygen dynamics in phototrophic biofilms growing across a gradient of hydraulic conditions Depetris, Anna Peter, Hannes Bordoloi, Ankur Deep Bernard, Hippolyte Niayifar, Amin Kühl, Michael de Anna, Pietro Battin, Tom Jan iScience Article Biofilms are surface-attached and matrix-enclosed microbial communities that dominate microbial life in numerous ecosystems. Using flumes and automated optical coherence tomography, we studied the morphogenesis of phototrophic biofilms along a gradient of hydraulic conditions. Compact and coalescent biofilms formed under elevated bed shear stress, whereas protruding clusters separated by troughs formed under reduced shear stress. This morphological differentiation did not linearly follow the hydraulic gradient, but a break point emerged around a shear stress of ~0.08 Pa. While community composition did not differ between high and low shear environments, our results suggest that the morphological differentiation was linked to biomass displacement and reciprocal interactions between the biofilm structure and hydraulics. Mapping oxygen concentrations within and around biofilm structures, we provide empirical evidence for biofilm-induced alterations of oxygen mass transfer. Our findings suggest that architectural plasticity, efficient mass transfer, and resistance to shear stress contribute to the success of phototrophic biofilms. Elsevier 2021-01-20 /pmc/articles/PMC7868926/ /pubmed/33598641 http://dx.doi.org/10.1016/j.isci.2021.102067 Text en © 2021 The Author(s) http://creativecommons.org/licenses/by/4.0/ This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Depetris, Anna
Peter, Hannes
Bordoloi, Ankur Deep
Bernard, Hippolyte
Niayifar, Amin
Kühl, Michael
de Anna, Pietro
Battin, Tom Jan
Morphogenesis and oxygen dynamics in phototrophic biofilms growing across a gradient of hydraulic conditions
title Morphogenesis and oxygen dynamics in phototrophic biofilms growing across a gradient of hydraulic conditions
title_full Morphogenesis and oxygen dynamics in phototrophic biofilms growing across a gradient of hydraulic conditions
title_fullStr Morphogenesis and oxygen dynamics in phototrophic biofilms growing across a gradient of hydraulic conditions
title_full_unstemmed Morphogenesis and oxygen dynamics in phototrophic biofilms growing across a gradient of hydraulic conditions
title_short Morphogenesis and oxygen dynamics in phototrophic biofilms growing across a gradient of hydraulic conditions
title_sort morphogenesis and oxygen dynamics in phototrophic biofilms growing across a gradient of hydraulic conditions
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7868926/
https://www.ncbi.nlm.nih.gov/pubmed/33598641
http://dx.doi.org/10.1016/j.isci.2021.102067
work_keys_str_mv AT depetrisanna morphogenesisandoxygendynamicsinphototrophicbiofilmsgrowingacrossagradientofhydraulicconditions
AT peterhannes morphogenesisandoxygendynamicsinphototrophicbiofilmsgrowingacrossagradientofhydraulicconditions
AT bordoloiankurdeep morphogenesisandoxygendynamicsinphototrophicbiofilmsgrowingacrossagradientofhydraulicconditions
AT bernardhippolyte morphogenesisandoxygendynamicsinphototrophicbiofilmsgrowingacrossagradientofhydraulicconditions
AT niayifaramin morphogenesisandoxygendynamicsinphototrophicbiofilmsgrowingacrossagradientofhydraulicconditions
AT kuhlmichael morphogenesisandoxygendynamicsinphototrophicbiofilmsgrowingacrossagradientofhydraulicconditions
AT deannapietro morphogenesisandoxygendynamicsinphototrophicbiofilmsgrowingacrossagradientofhydraulicconditions
AT battintomjan morphogenesisandoxygendynamicsinphototrophicbiofilmsgrowingacrossagradientofhydraulicconditions