ArticleNature communications2021
Quantifying nitrogen fixation by heterotrophic bacteria in sinking marine particles.
Article in Nature communications, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.
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Who cites it
29 citing papers in PubMed.
- Composition of non-cyanobacterial diazotrophs in suspended and sinking particles is driven by productivity phase.Microbiology spectrum · 2026Article
- Particle-associated diazotrophs drive nitrogen fixation in Arctic subsurface waters of the Barents Sea.Nature communications · 2026Article
- Impact of diazotrophs on marine food webs and the biological carbon pump: progress and remaining challenges.The ISME journal · 2026Review
- Metabolic biochemical models of NmSystems · 2025Article
- A Bradyrhizobium isolate from a marine diatom induces nitrogen-fixing nodules in a terrestrial legume.Nature microbiology · 2025Article
- Nitrogen Fixation Potential in Bathypelagic Sediment of the Ice-Covered Arctic Ocean Revealed Through Long-Term Stable Isotope Incubations.Environmental microbiology reports · 2025Article
- Non-cyanobacterial diazotrophs support the survival of marine microalgae in nitrogen-depleted environment.Genome biology · 2025Article
- Unveiling the contribution of particle-associated non-cyanobacterial diazotrophs to NCommunications biology · 2025Article
- Particle-associated NScience advances · 2025Article
- Dynamics of diazotroph particle colonization in the Arctic Ocean.The ISME journal · 2025Article
- Cold seep nitrogen fixation and its potential relationship with sulfur cycling.Microbiology spectrum · 2024Article
- Eddy-driven diazotroph distribution in the subtropical North Atlantic: horizontal variability prevails over particle sinking speed.Communications biology · 2024Article
- Dominant nitrogen metabolisms of a warm, seasonally anoxic freshwater ecosystem revealed using genome resolved metatranscriptomics.mSystems · 2024Article
- Biofilm formation and cell plasticity drive diazotrophy in an anoxygenic phototrophic bacterium.Applied and environmental microbiology · 2023Article
- Non-cyanobacterial diazotrophs: global diversity, distribution, ecophysiology, and activity in marine waters.FEMS microbiology reviews · 2023Review
- A microbial flora with superior pollutant removal efficiency and its fermentation process optimization.AMB Express · 2023Article
- Bacteria and Archaea Regulate Particulate Organic Matter Export in Suspended and Sinking Marine Particle Fractions.mSphere · 2023Article
- Microscale dynamics promote segregated denitrification in diatom aggregates sinking slowly in bulk oxygenated seawater.Communications earth & environment · 2023Article
- A diazotrophy-ammoniotrophy dual growth model for the sulfate reducing bacteriumComputational and structural biotechnology journal · 2023Article
- Cell-specific measurements show nitrogen fixation by particle-attached putative non-cyanobacterial diazotrophs in the North Pacific Subtropical Gyre.Nature communications · 2022Article
Corrections and comments
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Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Nitrogen ([Formula: see text]) fixation by heterotrophic bacteria associated with sinking particles contributes to marine N cycling, but a mechanistic understanding of its regulation and significance are not available. Here we develop a mathematical model for unicellular heterotrophic bacteria growing on sinking marine particles. These bacteria can fix [Formula: see text] under suitable environmental conditions. We find that the interactive effects of polysaccharide and polypeptide concentrations, sinking speed of particles, and surrounding [Formula: see text] and [Formula: see text] concentrations determine the [Formula: see text] fixation rate inside particles. [Formula: see text] fixation inside sinking particles is mainly fueled by [Formula: see text] respiration rather than [Formula: see text] respiration. Our model suggests that anaerobic processes, including heterotrophic [Formula: see text] fixation, can take place in anoxic microenvironments inside sinking particles even in fully oxygenated marine waters. The modelled [Formula: see text] fixation rates are similar to bulk rates measured in the aphotic ocean, and our study consequently suggests that particle-associated heterotrophic [Formula: see text] fixation contributes significantly to oceanic [Formula: see text] fixation.
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