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Bdellovibrio and Like Organisms are Predictors of Microbiome Diversity in distinct Host Groups

Julia Johnke, Sebastian Fraune, Thomas Bosch, Ute Hentschel, Hinrich Schulenburg
doi: https://doi.org/10.1101/627455
Julia Johnke
Department of Evolutionary Ecology and Genetics, Zoological Institute, CAU Kiel, Am Botanischen Garten 1-9, 24118 Kiel, Germany
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Sebastian Fraune
Department of Cell and Developmental Biology, Zoological Institute, CAU Kiel, Am Botanischen Garten 1-9, 24118 Kiel, Germany
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Thomas Bosch
Department of Cell and Developmental Biology, Zoological Institute, CAU Kiel, Am Botanischen Garten 1-9, 24118 Kiel, Germany
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Ute Hentschel
RD3 Marine Microbiology, GEOMAR Helmholtz Centre for Ocean Research Kiel, Düsternbrooker Weg 20, 24105 Kiel, GermanySection of Marine Biology, CAU Kiel, Am Botanischen Garten 1-9, 24118 Kiel, Germany
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Hinrich Schulenburg
Department of Evolutionary Ecology and Genetics, Zoological Institute, CAU Kiel, Am Botanischen Garten 1-9, 24118 Kiel, Germany
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  • For correspondence: hschulenburg@zoologie.uni-kiel.de
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Abstract

Biodiversity is generally believed to be a main determinant of ecosystem functioning. This principle also applies to the microbiome and could consequently contribute to host health. According to ecological theory, communities are shaped by top predators whose direct and indirect interactions with community members cause stability and diversity. Bdellovibrio and like organisms (BALOs) are a neglected group of predatory bacteria that feed on Gram-negative bacteria and can thereby influence microbiome composition. We asked whether BALOs can predict biodiversity levels in microbiomes from distinct host groups and environments. We demonstrate that genetic signatures of BALOs are commonly found within the 16S rRNA reads from diverse host taxa. In many cases, their presence, abundance, and especially richness are positively correlated with overall microbiome diversity. Our findings suggest that BALOs can act as drivers of microbial alpha-diversity and should therefore be considered as candidates for the restoration of microbiomes and the prevention of dysbiosis.

Footnotes

  • The nucleotide sequence data reported are available in the EMBL databases under the accession number PRJEB30476.

Copyright 
The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. All rights reserved. No reuse allowed without permission.
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Posted May 05, 2019.
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Bdellovibrio and Like Organisms are Predictors of Microbiome Diversity in distinct Host Groups
Julia Johnke, Sebastian Fraune, Thomas Bosch, Ute Hentschel, Hinrich Schulenburg
bioRxiv 627455; doi: https://doi.org/10.1101/627455
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Bdellovibrio and Like Organisms are Predictors of Microbiome Diversity in distinct Host Groups
Julia Johnke, Sebastian Fraune, Thomas Bosch, Ute Hentschel, Hinrich Schulenburg
bioRxiv 627455; doi: https://doi.org/10.1101/627455

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