| Q37558609 | A comprehensive aligned nifH gene database: a multipurpose tool for studies of nitrogen-fixing bacteria |
| Q34181780 | A global census of nitrogenase diversity |
| Q41826233 | Abundances and distributions of the dominant nifH phylotypes in the Northern Atlantic Ocean |
| Q42574495 | Analogous nutrient limitations in unicellular diazotrophs and Prochlorococcus in the South Pacific Ocean |
| Q55311887 | Bacterial Diversity and Nitrogen Utilization Strategies in the Upper Layer of the Northwestern Pacific Ocean. |
| Q38786098 | Cellular interactions: lessons from the nitrogen-fixing cyanobacteria. |
| Q41699574 | Chasing after Non-cyanobacterial Nitrogen Fixation in Marine Pelagic Environments. |
| Q36207473 | Construction and Screening of Marine Metagenomic Large Insert Libraries |
| Q37430450 | Diazotroph Diversity in the Sea Ice, Melt Ponds, and Surface Waters of the Eurasian Basin of the Central Arctic Ocean |
| Q33307496 | Diazotrophic bacterioplankton in a coral reef lagoon: phylogeny, diel nitrogenase expression and response to phosphate enrichment. |
| Q37122338 | Dinitrogen fixation in aphotic oxygenated marine environments |
| Q36106110 | Direct and Indirect Costs of Dinitrogen Fixation in Crocosphaera watsonii WH8501 and Possible Implications for the Nitrogen Cycle |
| Q39088764 | Distinct ecological niches of marine symbiotic N2 -fixing cyanobacterium Candidatus Atelocyanobacterium thalassa sublineages. |
| Q33403615 | Distribution and activity of diazotrophs in the Eastern Equatorial Atlantic |
| Q33340524 | Diversity and abundance of diazotrophic microorganisms in the South China Sea during intermonsoon |
| Q34069832 | Diversity and distribution of diazotrophic communities in the South China Sea deep basin with mesoscale cyclonic eddy perturbations |
| Q39034398 | Doubling of marine dinitrogen-fixation rates based on direct measurements |
| Q44315239 | Environmental constraints underpin the distribution and phylogenetic diversity of nifH in the Yellowstone geothermal complex |
| Q34103550 | Environmental forcing of nitrogen fixation in the eastern tropical and sub-tropical North Atlantic Ocean |
| Q104694534 | Equatorial upwelling enhances nitrogen fixation in the Atlantic Ocean |
| Q30375275 | Facets of diazotrophy in the oxygen minimum zone waters off Peru |
| Q57899929 | Five decades of N2 fixation research in the North Atlantic Ocean |
| Q39211959 | Gammaproteobacterial diazotrophs and nifH gene expression in surface waters of the South Pacific Ocean |
| Q39456789 | Genome-wide analysis of diel gene expression in the unicellular N(2)-fixing cyanobacterium Crocosphaera watsonii WH 8501. |
| Q91893521 | Heterogeneous nitrogen fixation rates confer energetic advantage and expanded ecological niche of unicellular diazotroph populations |
| Q35979339 | Heterotrophic organisms dominate nitrogen fixation in the South Pacific Gyre |
| Q31028809 | High levels of heterogeneity in diazotroph diversity and activity within a putative hotspot for marine nitrogen fixation |
| Q39578009 | Impact of diazotrophy on N stable isotope signatures of nitrate and particulate organic nitrogen: case studies in the north-eastern tropical Atlantic Ocean |
| Q33269419 | Isolation and gene quantification of heterotrophic N2-fixing bacterioplankton in the Baltic Sea. |
| Q36140821 | Low genomic diversity in tropical oceanic N2-fixing cyanobacteria |
| Q34792405 | Low temperature delays timing and enhances the cost of nitrogen fixation in the unicellular cyanobacterium Cyanothece |
| Q46250130 | Metabolic versatility of a novel N2 -fixing Alphaproteobacterium isolated from a marine oxygen minimum zone. |
| Q33293604 | Molecular ecology of nifH genes and transcripts in the eastern Mediterranean Sea. |
| Q35670872 | Nitrogen Fuelling of the Pelagic Food Web of the Tropical Atlantic |
| Q57211459 | Nitrogen fixation and identification of potential diazotrophs in the Canadian Arctic |
| Q33791868 | Nitrogen fixation and nitrogenase (nifH) expression in tropical waters of the eastern North Atlantic. |
| Q33895057 | Nitrogenase gene amplicons from global marine surface waters are dominated by genes of non-cyanobacteria |
| Q57241087 | Nitrogenase gene expression in the Chesapeake Bay Estuary |
| Q46192919 | Non-cyanobacterial nifH phylotypes in the North Pacific Subtropical Gyre detected by flow-cytometry cell sorting. |
| Q31095433 | Nutrient uplift in a cyclonic eddy increases diversity, primary productivity and iron demand of microbial communities relative to a western boundary current |
| Q110951366 | Overlooked and widespread pennate diatom-diazotroph symbioses in the sea |
| Q53098936 | Photoperiod length paces the temporal orchestration of cell cycle and carbon-nitrogen metabolism in Crocosphaera watsonii. |
| Q45878401 | Phylogenetic diversity of nitrogen-fixing bacteria and the nifH gene from mangrove rhizosphere soil |
| Q57201491 | Physical forcing of nitrogen fixation and diazotroph community structure in the North Pacific subtropical gyre |
| Q28541154 | Pontibacter diazotrophicus sp. nov., a novel nitrogen-fixing bacterium of the family Cytophagaceae |
| Q28817723 | Possible association of diazotrophs with marine zooplankton in the Pacific Ocean |
| Q36112056 | Rapid annotation of nifH gene sequences using classification and regression trees facilitates environmental functional gene analysis |
| Q64059445 | Temporal variability of diazotroph community composition in the upwelling region off NW Iberia |
| Q41473433 | The Green Berry Consortia of the Sippewissett Salt Marsh: Millimeter-Sized Aggregates of Diazotrophic Unicellular Cyanobacteria |
| Q33769392 | The influence of pCO2 and temperature on gene expression of carbon and nitrogen pathways in Trichodesmium IMS101. |
| Q39538312 | The paradox of marine heterotrophic nitrogen fixation: abundances of heterotrophic diazotrophs do not account for nitrogen fixation rates in the Eastern Tropical South Pacific. |
| Q46926396 | Toxic effects of acetochlor, methamidophos and their combination on nifH gene in soil |
| Q38909660 | Transcriptionally active heterotrophic diazotrophs are widespread in the upper water column of the Arabian Sea. |
| Q34296430 | Trichodesmium--a widespread marine cyanobacterium with unusual nitrogen fixation properties |
| Q39665999 | Two Strains of Crocosphaera watsonii with Highly Conserved Genomes are Distinguished by Strain-Specific Features. |
| Q24718806 | Widespread Distribution and Expression of Gamma A (UMB), an Uncultured, Diazotrophic, γ-Proteobacterial nifH Phylotype |