The Nitrogen-Cycling Network of Bacterial Symbionts in the Sponge Spheciospongia vesparium

Autor: Liming He, Zhiyong Li, Liisi Karlep
Rok vydání: 2021
Předmět:
Zdroj: Journal of Ocean University of China. 20:999-1012
ISSN: 1993-5021
1672-5182
DOI: 10.1007/s11802-021-4530-9
Popis: The microbes associated with sponges play important roles in the nitrogen cycle of the coral reefs ecosystem, e.g., nitrification, denitrification, and nitrogen fixation. However, the whole nitrogen-cycling network has remained incomplete in any individual sponge holobiont. In this study, 454 pyrosequencing of the 16S rRNA genes revealed that the sponge Spheciospongia vesparium from the South China Sea has a unique bacterial community (including 12 bacterial phyla), dominated particularly by the genus Shewanella (order Alteromonadales). A total of 10 functional genes, nifH, amoA, narG, napA, nirK, norB, nosZ, ureC, nrfA, and gltB, were detected in the microbiome of the sponge S. vesparium by gene-targeted analysis, revealing an almost complete nitrogen-cycling network in this sponge. Particularly, bacterial urea utilization and the whole denitrification pathway were highlighted. MEGAN analysis suggests that Proteobacteria (e.g., Shewanella) and Bacteroidetes (e.g., Bizionia) are probably involved in the nitrogen cycle in the sponge S. vesparium.
Databáze: OpenAIRE
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