ArticlePloS one2020
Spatio-temporal shifts in community structure and activity of nirS-type denitrifiers in the sediment cores of Pearl River Estuary.
Article in PloS one, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Particle associated denitrification in coastal aquaculture water.BMC microbiology · 2025Article
- Ammonium loss microbiologically mediated by Fe(III) and Mn(IV) reduction along a coastal lagoon system.Chemosphere · 2024Article
- Denitrification in hypersaline and coastal environments.FEMS microbiology letters · 2023Article
- Diverse key nitrogen cycling genes nifH, nirS and nosZ associated with Pichavaram mangrove rhizospheres as revealed by culture-dependent and culture-independent analyses.Archives of microbiology · 2022Article
- Shift of DNRA bacterial community composition in sediment cores of the Pearl River Estuary and the impact of environmental factors.Ecotoxicology (London, England) · 2021Article
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Authors and funding
6 authors.
Funding
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Abstract
Denitrification, an important process in microbial mediated nitrogen cycle, plays important roles in nitrogen loss in estuarine sediments. However, the function of denitrifiers in the estuarine subsurface sediments remained poorly understood. In this study, we analyzed the potential activity, abundance and community structure of nirS-type denitrifiers using 15N-labeled incubation quantitative-PCR and high throughput sequencing techniques in sediment cores from Pearl River Estuary (PRE). Results showed that subsurface sediments had nearly same level denitrification potential activity compare to surface sediments, although the abundance of nirS gene decreased sharply from surface to bottom in sediment cores. Meanwhile, nirS gene abundance exhibit significant temporal variations, which is consistent with denitrification potential activity. Moreover, the community structure and diversity of nirS-type denitrifiers in sediment cores exhibited remarkable temporal shift pattern. For spatial variation, no significant difference was observed of denitrifiers community structure in each sediment core from the surface to the subsurface, while there were significant different diversity characteristic among different cores. Redundancy analysis (RDA) showed that multiple environmental factors including salinity, pH, oxidation-reduction potential, nutrient content and organic substances synergistically shaped the diversity and distribution of nirS-type denitrifers in PRE sediments. Our results showed that nirS-type denitrifers played important roles in the nitrogen removal in subsurface sediments of PRE.
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