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Microbial community changes correlate with impaired host fitness of Aurelia aurita after environmental challenge

Climate change globally endangers certain marine species, but at the same time, such changes may promote species that can tolerate and adapt to varying environmental conditions. Such acclimatization can be accompanied or possibly even be enabled by a host’s microbiome; however, few studies have so f...

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Autores principales: Pinnow, Nicole, Chibani, Cynthia M., Güllert, Simon, Weiland-Bräuer, Nancy
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10515101/
https://www.ncbi.nlm.nih.gov/pubmed/37735458
http://dx.doi.org/10.1186/s42523-023-00266-4
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author Pinnow, Nicole
Chibani, Cynthia M.
Güllert, Simon
Weiland-Bräuer, Nancy
author_facet Pinnow, Nicole
Chibani, Cynthia M.
Güllert, Simon
Weiland-Bräuer, Nancy
author_sort Pinnow, Nicole
collection PubMed
description Climate change globally endangers certain marine species, but at the same time, such changes may promote species that can tolerate and adapt to varying environmental conditions. Such acclimatization can be accompanied or possibly even be enabled by a host’s microbiome; however, few studies have so far directly addressed this process. Here we show that acute, individual rises in seawater temperature and salinity to sub-lethal levels diminished host fitness of the benthic Aurelia aurita polyp, demonstrated by up to 34% reduced survival rate, shrinking of the animals, and almost halted asexual reproduction. Changes in the fitness of the polyps to environmental stressors coincided with microbiome changes, mainly within the phyla Proteobacteria and Bacteroidota. The absence of bacteria amplified these effects, pointing to the benefit of a balanced microbiota to cope with a changing environment. In a future ocean scenario, mimicked by a combined but milder rise of temperature and salinity, the fitness of polyps was severely less impaired, together with condition-specific changes in the microbiome composition. Our results show that the effects on host fitness correlate with the strength of environmental stress, while salt-conveyed thermotolerance might be involved. Further, a specific, balanced microbiome of A. aurita polyps supports the host’s acclimatization. Microbiomes may provide a means for acclimatization, and microbiome flexibility can be a fundamental strategy for marine animals to adapt to future ocean scenarios and maintain biodiversity and ecosystem functioning. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1186/s42523-023-00266-4.
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spelling pubmed-105151012023-09-23 Microbial community changes correlate with impaired host fitness of Aurelia aurita after environmental challenge Pinnow, Nicole Chibani, Cynthia M. Güllert, Simon Weiland-Bräuer, Nancy Anim Microbiome Research Climate change globally endangers certain marine species, but at the same time, such changes may promote species that can tolerate and adapt to varying environmental conditions. Such acclimatization can be accompanied or possibly even be enabled by a host’s microbiome; however, few studies have so far directly addressed this process. Here we show that acute, individual rises in seawater temperature and salinity to sub-lethal levels diminished host fitness of the benthic Aurelia aurita polyp, demonstrated by up to 34% reduced survival rate, shrinking of the animals, and almost halted asexual reproduction. Changes in the fitness of the polyps to environmental stressors coincided with microbiome changes, mainly within the phyla Proteobacteria and Bacteroidota. The absence of bacteria amplified these effects, pointing to the benefit of a balanced microbiota to cope with a changing environment. In a future ocean scenario, mimicked by a combined but milder rise of temperature and salinity, the fitness of polyps was severely less impaired, together with condition-specific changes in the microbiome composition. Our results show that the effects on host fitness correlate with the strength of environmental stress, while salt-conveyed thermotolerance might be involved. Further, a specific, balanced microbiome of A. aurita polyps supports the host’s acclimatization. Microbiomes may provide a means for acclimatization, and microbiome flexibility can be a fundamental strategy for marine animals to adapt to future ocean scenarios and maintain biodiversity and ecosystem functioning. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1186/s42523-023-00266-4. BioMed Central 2023-09-21 /pmc/articles/PMC10515101/ /pubmed/37735458 http://dx.doi.org/10.1186/s42523-023-00266-4 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Research
Pinnow, Nicole
Chibani, Cynthia M.
Güllert, Simon
Weiland-Bräuer, Nancy
Microbial community changes correlate with impaired host fitness of Aurelia aurita after environmental challenge
title Microbial community changes correlate with impaired host fitness of Aurelia aurita after environmental challenge
title_full Microbial community changes correlate with impaired host fitness of Aurelia aurita after environmental challenge
title_fullStr Microbial community changes correlate with impaired host fitness of Aurelia aurita after environmental challenge
title_full_unstemmed Microbial community changes correlate with impaired host fitness of Aurelia aurita after environmental challenge
title_short Microbial community changes correlate with impaired host fitness of Aurelia aurita after environmental challenge
title_sort microbial community changes correlate with impaired host fitness of aurelia aurita after environmental challenge
topic Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10515101/
https://www.ncbi.nlm.nih.gov/pubmed/37735458
http://dx.doi.org/10.1186/s42523-023-00266-4
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