nitrogen cycle


Summary: The circulation of nitrogen in nature, consisting of a cycle of biochemical reactions in which atmospheric nitrogen is compounded, dissolved in rain, and deposited in the soil, where it is assimilated and metabolized by animals, plants, bacteria, and fungi, eventually returning to the atmosphere by bacterial decomposition of organic matter.

Top Publications

  1. Baldos A, Corre M, Veldkamp E. Response of N cycling to nutrient inputs in forest soils across a 1000-3000 m elevation gradient in the Ecuadorian Andes. Ecology. 2015;96:749-61 pubmed
    ..This fast response of soil-N cycling processes across elevations implies that greater attention should be paid to the biological implications on montane forests of such uncoupled soil-N cycling. ..
  2. Chen J, Ying G, Liu Y, Wei X, Liu S, He L, et al. Nitrogen removal and its relationship with the nitrogen-cycle genes and microorganisms in the horizontal subsurface flow constructed wetlands with different design parameters. J Environ Sci Health A Tox Hazard Subst Environ Eng. 2017;52:804-818 pubmed publisher
    ..These findings show that nitrification is a limiting factor for the nitrogen removal by CWs. ..
  3. De Mandal S, Chatterjee R, Kumar N. Dominant bacterial phyla in caves and their predicted functional roles in C and N cycle. BMC Microbiol. 2017;17:90 pubmed publisher
    ..These results will be useful in documenting the biospeleology of this region and systematic understanding of bacterial communities in natural sediment environments as well. ..
  4. Hobley L, Li B, Wood J, Kim S, Naidoo J, Ferreira A, et al. Spermidine promotes Bacillus subtilis biofilm formation by activating expression of the matrix regulator slrR. J Biol Chem. 2017;292:12041-12053 pubmed publisher
  5. Zhang M, Bai S, Tang L, Zhang Y, Teng Y, Xu Z. Linking potential nitrification rates, nitrogen cycling genes and soil properties after remediating the agricultural soil contaminated with heavy metal and fungicide. Chemosphere. 2017;184:892-899 pubmed publisher
  6. Mao B, Mao R, Zeng D. Species diversity and chemical properties of litter influence non-additive effects of litter mixtures on soil carbon and nitrogen cycling. PLoS ONE. 2017;12:e0180422 pubmed publisher
    ..Soil N related processes rather than soil respiration were partly explained by litter chemical composition and chemical diversity, highlighting the importance of functional diversity of litter on soil N cycling. ..
  7. Tagliabue A, Bowie A, Boyd P, Buck K, Johnson K, Saito M. The integral role of iron in ocean biogeochemistry. Nature. 2017;543:51-59 pubmed publisher
  8. Ghosh S, Ayayee P, Valverde Barrantes O, Blackwood C, Royer T, Leff L. Initial nitrogen enrichment conditions determines variations in nitrogen substrate utilization by heterotrophic bacterial isolates. BMC Microbiol. 2017;17:87 pubmed publisher
    ..Ultimately, our results imply that the available N pool influences physiology and selects for bacteria with various abilities that are unrelated to their taxonomic affiliation. ..
  9. Luque Almagro V, Manso I, Sullivan M, Rowley G, Ferguson S, Moreno Vivián C, et al. Transcriptional and translational adaptation to aerobic nitrate anabolism in the denitrifier Paracoccus denitrificans. Biochem J. 2017;474:1769-1787 pubmed publisher
    ..The existence of a regulation mechanism for nitrate assimilation in P. denitrificans, by which nitrate induction operates at both transcriptional and translational levels, is proposed. ..

More Information


  1. Li J, Huang B, Wang Q, Li Y, Fang W, Yan D, et al. Effect of fumigation with chloropicrin on soil bacterial communities and genes encoding key enzymes involved in nitrogen cycling. Environ Pollut. 2017;227:534-542 pubmed publisher
    ..Our study provides useful information for environmental safety assessments of CP in China. ..
  2. Piccini I, Arnieri F, Caprio E, Nervo B, Pelissetti S, Palestrini C, et al. Greenhouse gas emissions from dung pats vary with dung beetle species and with assemblage composition. PLoS ONE. 2017;12:e0178077 pubmed publisher
    ..As the mix of multiple species proved the most effective in reducing CO2-equivalents, the conservation of diverse assemblages of dung beetles emerges as a priority in agro-pastoral ecosystems. ..