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Functional vertical connectivity of microbial communities in the ocean
Chen, S.; Xie, Z.-X.; Yan, K.-Q.; Chen, J.-W.; Li, D.-X.; Wu, P.-F.; Peng, L.; Lin, L.; Dong, C.-M.; Zhao, Z.; Fan, G.-Y.; Liu, S.-Q.; Herndl, G.; Wang, D.-Z. (2024). Functional vertical connectivity of microbial communities in the ocean. Science Advances 10(21): eadj8184. https://dx.doi.org/10.1126/sciadv.adj8184
In: Science Advances. AAAS: New York. e-ISSN 2375-2548, meer
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| Auteurs | | Top |
- Chen, S.
- Xie, Z.-X.
- Yan, K.-Q.
- Chen, J.-W.
- Li, D.-X.
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- Wu, P.-F.
- Peng, L.
- Lin, L.
- Dong, C.-M.
- Zhao, Z.
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- Fan, G.-Y.
- Liu, S.-Q.
- Herndl, G.J., meer
- Wang, D.-Z.
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| Abstract |
Sinking particles are a critical conduit for the transport of surface microbes to the ocean’s interior. Vertical connectivity of phylogenetic composition has been shown; however, the functional vertical connectivity of microbial communities has not yet been explored in detail. We investigated protein and taxa profiles of both free-living and particle-attached microbial communities from the surface to 3000 m depth using a combined metaproteomic and 16S rRNA amplicon sequencing approach. A clear compositional and functional vertical connectivity of microbial communities was observed throughout the water column with Oceanospirillales, Alteromonadales, and Rhodobacterales as key taxa. The surface-derived particle-associated microbes increased the expression of proteins involved in basic metabolism, organic matter processing, and environmental stress response in deep waters. This study highlights the functional vertical connectivity between surface and deep-sea microbial communities via sinking particles and reveals that a considerable proportion of the deep-sea microbes might originate from surface waters and have a major impact on the biogeochemical cycles in the deep sea. |
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