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Impact of zinc oxide nanoparticles on the bacterial community of Hydra magnipapillata



Zinc oxide nanoparticles (ZnO NPs) are extensively used for various products. In this study, the effects of ZnO NPs exposure in diversity and community composition of the bacteria associated with H. magnipapillata were investigated. This study provides insight into possible impacts of ZnO NPs on aquatic organisms.


454-pyrosequencing analysis of the bacterial 16S rRNA gene was applied to H. magnipapillata after exposure to 10 mg/L ZnO NPs (Ø 20 nm).


Acute exposure to ZnO NPs changed the diversity and compositions of the associated bacteria. The composition of Curvibacter decreased, but Flectobacillus and Delftia increased; these two genera are known to have beneficial functions.


The changes in diversity and composition of the associated bacteria may indicate the possible mechanisms by which the associated bacteria maintain their mutual interactions and support the health of their host after exposure to ZnO NPs.

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This research was supported by a grant from Marine Biotechnology Programs (20170305), Development of Biomedical materials based on marine proteins funded by Ministry of Oceans and Fisheries, Republic of Korea and NRF-2017R1A2B2012541.

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Correspondence to Seungshic Yum.

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Ade Yamindago, Nayun Lee, Seonock Woo and Seungshic Yum declare that they have no conflict of interest.

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Yamindago, A., Lee, N., Woo, S. et al. Impact of zinc oxide nanoparticles on the bacterial community of Hydra magnipapillata. Mol. Cell. Toxicol. 16, 63–72 (2020).

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  • Hydra-associated bacteria
  • Nanomaterial
  • 16S rRNA gene-based metagenomic
  • Bacterial composition