Microbial Community Composition and Function in Sediments from the Pearl River Mouth Basin
| Autor: | Tiezhu Mi, Siqi Li, Ye Chen, Yueteng Liu, Yu Zhen |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
geography
Thaumarchaeota geography.geographical_feature_category Denitrification biology Ecology Ocean Engineering 04 agricultural and veterinary sciences Oceanography biology.organism_classification Microbial population biology 040102 fisheries River mouth 0401 agriculture forestry and fisheries Scalindua Nitrification Proteobacteria Nitrogen cycle |
| Zdroj: | Journal of Ocean University of China. 19:941-953 |
| ISSN: | 1993-5021 1672-5182 |
| Popis: | This study was conducted to characterize the diversity and function of microbial communities in marine sediments of the Pearl River Mouth Basin (PRMB) in the South China Sea. The results showed that the bacterial and archaeal communities varied greatly with depth. Proteobacteria in bacterial communities and Nitrososphaeria and Woesearchaeota in archaeal communities were dominant in the shallow sediments (1–40 cm), while Chloroflexi in bacterial communities and Bathyarchaeia in archaeal communities were dominant in the deep sediments (50–200 cm). Regarding ecological functions based on the metatranscriptomic data, genes involved in various pathways of nitrogen metabolism and sulfur metabolism were observed in the tested sediment samples. Metagenomic analysis revealed that Proteobacteria contribute the most to nearly all genes involved in nitrogen and sulfur metabolism. Moreover, Thaumarchaeota contribute the most to certain genes involved in nitrification, denitrification and assimilatory sulfate reduction pathways. The most abundant bacterial genus, Candidatus Scalindua, is crucial for nitrification, dissimilatory nitrate reduction, denitrification and assimilatory sulfate reduction pathways. |
| Databáze: | OpenAIRE |
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