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More than just hitchhikers: a survey of bacterial communities associated with diatoms originating from sea turtles Filek, K.; Lebbe, L.; Willems, A.; Chaerle, P.; Vyverman, W.; Žižek, M.; Bosak, S. (2022). More than just hitchhikers: a survey of bacterial communities associated with diatoms originating from sea turtles. FEMS Microbiol. Ecol. 98(10): fiac104. https://dx.doi.org/10.1093/femsec/fiac104 In: FEMS Microbiology Ecology. Federation of European Microbiological Societies: Amsterdam. ISSN 0168-6496; e-ISSN 1574-6941 Is gerelateerd aan: Filek, K.; Lebbe, L.; Willems, A.; Chaerle, P.; Vyverman, W.; Žižek, M.; Bosak, S. (2022). More than just hitchhikers: a survey of bacterial communities associated1 with diatoms originating from marine reptiles. bioRxiv 2022: 1-27. https://dx.doi.org/10.1101/2022.04.19.488760, meer

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Beschikbaar in	Auteurs
VLIZ: Non-open access 391654 [ aanvragen ]

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Trefwoorden

Scientific Publication Bacillariophyceae [WoRMS]; Bacteria [WoRMS] Marien/Kust

Author keywords

diatoms, epizoic bacteria, epizoic communities, bacteria diatom interactions, phycosphere

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Auteurs		Top
Filek, K. Lebbe, L. Willems, A. Chaerle, P.	Vyverman, W. Žižek, M. Bosak, S.

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Abstract

Diatoms and bacteria are known for being the first colonizers of submerged surfaces including the skin of marine reptiles. Sea turtle carapace and skin harbour diverse prokaryotic and eukaryotic microbes, including several epizoic diatoms. However, the importance of diatom-bacteria associations is hardly investigated in biofilms associated with animal hosts. This study provides an inventory of diatoms, bacteria, and diatom-associated bacteria originating from loggerhead sea turtles using both metabarcoding and culturing approaches. Amplicon sequencing of the carapace and skin samples chloroplast gene rbcL and 16S rRNA gene detected in total 634 diatom amplicon sequence variants (ASVs) and 3,661 bacterial ASVs indicating a high diversity. Cultures of putative epizoic and non-epizoic diatoms contained 458 bacterial ASVs and their bacterial assemblages reflected those of their host. Diatom strains allowed for enrichment and isolation of bacterial families rarely observed on turtles, such as Marinobacteraceae, Alteromonadaceae, and Alcanivoracaceae. When accounting for phylogenetic relationships between bacterial ASVs, we observed related diatom genera might retain similar microbial taxa in culture, regardless of the turtle's skin or carapace source. These data provide deeper insights into the sea turtle-associated microbial communities, and reveal the potential of epizoic biofilms as a source of novel microbes and possibly important diatom-bacteria associations.

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