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Nematodes alter the taxonomic and functional profiles of benthic bacterial communities: A metatranscriptomic approach
Guden, R.M.; Haegeman, A.; Ruttink, T.; Moens, T.; Derycke, S. (2024). Nematodes alter the taxonomic and functional profiles of benthic bacterial communities: A metatranscriptomic approach. Mol. Ecol. 33(9): e17331. https://dx.doi.org/10.1111/mec.17331
In: Molecular Ecology. Blackwell: Oxford. ISSN 0962-1083; e-ISSN 1365-294X, meer
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carbon and nitrogen cycling, ecosystem functioning, marine biogeochemistry, metatranscriptomics, sediment microbiome |
| Abstract |
Marine sediments cover 70% of the Earth's surface, and harbour diverse bacterial communities critical for marine biogeochemical processes, which affect climate change, biodiversity and ecosystem functioning. Nematodes, the most abundant and species-rich metazoan organisms in marine sediments, in turn, affect benthic bacterial communities and bacterial-mediated ecological processes, but the underlying mechanisms by which they affect biogeochemical cycles remain poorly understood. Here, we demonstrate using a metatranscriptomic approach that nematodes alter the taxonomic and functional profiles of benthic bacterial communities. We found particularly strong stimulation of nitrogen-fixing and methane-oxidizing bacteria in the presence of nematodes, as well as increased functional activity associated with methane metabolism and degradation of various carbon compounds. This study provides empirical evidence that the presence of nematodes results in taxonomic and functional shifts in active bacterial communities, indicating that nematodes may play an important role in benthic ecosystem processes. |
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