Published: 2020-05-29

Page: 9-17


Department of Botany, School of Agriculture and Natural Sciences, CT University, Ludhiana, India.


Department of Zoology, School of Agriculture and Natural Sciences, CT University, Ludhiana, India.

*Author to whom correspondence should be addressed.


Cyanobacteria, also known as Cyanophyta, are a phylum of bacteria that have chlorophyll and phycobiliprotein and can fasten carbon like plants through photosynthesis of oxygen evolution. Nitrogen fixation is a prevalent phenomenon exhibited by many organisms to fix the environmental nitrogen source in a usable form. Free-living N2-fixing cyanobacteria and Azolla (a symbiotic combination of water fern Azolla, Nostoc and Anabaena) are widely used as organic fertilizer for rice as well as corn, soybean, groundnuts. Under nitrogen limitation, a portion of the cyanobacteria can recognize a particular cell called heterocyst that offers an ideal microoxic climate for the legitimate working of oxygen-sensitive enzyme nitrogenase. Nitrogenase complex is engaged in N2 fixation in heterocystous cyanobacteria which is also followed by hydrogen manufacturing. A cyanobacteria possesses nif genes among multiple such species, which can be organized by polymerase chain reaction at the molecular level. Nitrogen control in cyanobacteria is mediated by Ntc A, a transcriptional regulator that belongs to the activator of the catabolite factor and is therefore distinct from a well-characterized Ntr scheme. This study is an attempt to recruit useful knowledge about the characteristics of cyanobacteria and their possible role in addressing the future wellbeing of the planet's agricultural and environmental challenges.

Keywords: Cyanobacteria, nitrogenase, heterocyst, phycobiliprotein, PCR

How to Cite

PANDEY, N., & ., S. (2020). CYANOBACTERIA ACT AS NITROGEN-FIXING ORGANISMS: A REVIEW. Asian Journal of Plant and Soil Sciences, 5(1), 9–17. Retrieved from


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Mazard S, Penesyan A, Ostrowski M, Paulsen IT, Egan S. Tiny, microbes with a big impact: The role of cyanobacteria and their metabolites in shaping our future. Mar. Drugs. 2016;14: 97.
DOI: 10.3390/md14050097

Wolk CP, Ernst A, Elhai J. Heterocyst development and Diazotrophic metabolism in terminal respiratory oxidase mutants of the Cyanobacterium Anabaena sp. Journal of Bacteriology. 2007;189(12):4425-4430.

Benson D, Kerry K, Malin G. Algal biofuels: Impact significance and implications for EU multi-level governance. Journal of Cleaner Production. 2014;72:4–13.

Singh JS. Methanotrophs: The potential biological sink to mitigate the global methane load. Curent Science. 2011;100:29–30.

Singh JS, Pandey VC, Singh DP. Efficient soil microorganisms: A new dimension for sustainable agriculture and environmental development. Agriculture, Ecosystems & Environment. 2011a;140:339–353.

Singh JS. Cyanobacteria: A vital bio-agent in eco-restoration of degraded lands and sustainable agriculture. Climate Change Environ. Sustain. 2014;2:133–137.

Woese CR. Bacterial evolution. Microbiological Reviews. 1987;51:221–271.

Castenholz RW. Phylum BX. Cyanobacteria. In Bergey’s Manual of Systematic Bacteriology, 2nd Edn, Eds D. R. Boone and R. W. Castenholz (New York, NY: Springer). 2001;473–599.

Rajneesh, Singh SP, Pathak J, Sinha RP. Cyanobacterial factories for the production of green energy and value-added products: An integrated approach for economic viability. Renewable and Sustainable Energy Reviews. 2017;69:578–595.

Peters GA, Toia REJ, Lough SM. The Azolla-Anabaena Azollae relationship. V.15 N2 fixation, acetylene reduction and H2 production. Plant Physiology. 1977;59:1021–1025.

ScienceDaily. Unexpected discovery: Blue-green algae produce oil; 2020.


Berry JP, Gantar M, Perez MH, Berry G, Noriega FG. Cyanobacterial toxins as allelochemicals with potential applications as algaecides, herbicides and insecticides. Marine Drugs. 2008;6:117-146.

Castenholz RW, Waterbury JB. “Cyanobacteria” preface. In: Staley JT, Bryant MP, Pfennig N and Holt JG (Eds), Bergey's Manual of Systematic Bacteriology. 3:1710-1727. Fogg GE. Growth and heterocyst production in Anabaena cylindrica Lemm. II. In relation to carbon and nitrogen metabolism. Annals of Botany. 1949;13: 241-259.

Peters GA, Toia REJ, Lough SM. The Azolla-Anabaena Azollae relationship. V.15 N2 fixation, acetylene reduction and H2 production. Plant Physiology. 1977;59:1021–1025.

Singh AL, Singh PK. Influence of Azolla management on the growth, yield of rice and soil fertility. II. N and P contents of plants and soil. Plant Soil. 1987;102:49–54.

Stewart WDP, Fitzgerald GP, Burns RH. Acetylene reduction by nitrogen-fixing blue-green algae. Archives of Microbiology. 1968;62:336–348.

Stewart WDP, Haystead A, Pearson HW. Nitrogenase activity in heterocysts of blue-green algae. International Journal of Science Nature. 1969;224:226-228.

Fleming H, Haselkorn R. Differentiation in Nostoc muscorum: Nitrogenase is synthesized in heterocysts. Proceedings of the National Academy of Sciences. 1973;70(10):2727-2731.

Peterson RB, Wolk CP. Localization of an uptake hydrogenase in Anabaena. Plant Physiology. 1978;61(4):688-691.

Peterson RB, Wolk CP. High recovery of nitrogenase activity and of 55Fe-labeled nitrogenase in heterocysts isolated from Anabaena variabilis. Proceedings of the National Academy of Sciences. 1978;75:6271-6275.

Smith RV, Evans MCW. Nitrogenase activity in cell free extracts of the blue-green alga Anabaena cylindrical. Journal of Bacteriology. 1971;105(3):913-917.

Rippka R, Stanier RY. The effects of anaerobiosis on nitrogenase synthesis and heterocyst development by Nostocacean cyanobacteria. Journal of General Microbiology. 1978;105:83-94.

Taylor BF, Lee CC, Bunt JS. Nitrogen-fixation associated with the marine blue-green alga, Trichodesmium as measured by the acetylene-reduction technique. Archieves of Microbiology. 1973;88:205-212.

Pearson HW, Howsley R, Kjeldsen CK, Walsby AE. Aerobic nitrogenase activity associated with a non-heterocystous filamentous cyanobacterium. Federation of European Microbiological Societies Letters. 19795;163-167.

Stewart WDP. Nitrogen fixation by blue green algae. In N.G. Carr and B. A. Whitton, Ed. The Biology of Blue-Green Algae. Blackwell Scientific Publications Journal, England. 1973;260-278.

Stewart WDP. Nitrogenfixation by photosynthetic microorganisms. Annual Review of Microbiology. 1973;27:283-316.

Stewart WDP, Lex M. Nitrogenase activity in the blue-green alga, Plectonema boryanum strain 594. Archieves of Microbiology. 1970;73:250-260.

Singh RN. Physiology and biochemistry of nitrogen fixation by blue-green algae. Department of Botany, Banaras Hindu University (India). 1967-1972;66.

Kenyon CN, Rippka R, Stanier RY. Fatty acid composition and physiological properties of some filamentous blue-green algae. Archieves of Microbiology. 1972;83:216-236.

Wyatt JT, Silvey JKG. Nitrogen fixation by Gloeocapsa. Science. 1969;165(3896):908-909.

Taylor BF, Lee CC, Bunt JS. Nitrogen-fixation associated with the marine blue-green alga, Trichodesmium as measured by the acetylene-reduction technique. Archieves of Microbiology. 1973;88:205-212.

Rippka R, Neilson A, Kunisawa R, Cohen-Bazire G. Nitrogen fixation by unicellular blue-green algae. Archieves of Microbiology. 1971;76:341-348.

Rippka R, Deruelles J, Waterbury JB, Herdman M, Stanier RY. Generic assignments, strain histories and properties of pure cultures of cyanobacteria. Journal of General Microbiology. 1979;111:1-61.

Oppenheim J, Marcus L. Correlation of ultrastructure in Azotobacter vinelandii with nitrogen source for growth. Journal of Bacteriology. 1970;101:286-291.

Lang NJ, Fay P. The heterocysts of blue-green algae. II. Details of ultrastructure. Proceedings of the Royal Societies B. 1971;178:193-203.

Stewar WDP, Rowell P, Rai AN. Symbiotic nitrogen-fixing cyanobacteria. Academic Press, London. 1980;239-277.

Drum RW, Pankratz S. Fine structure of an unusual cytoplasmic inclusion in the diatom genus, Rhopalodia. Protoplasma. Diatoms of North America. 1965;60:141-149.

Schnepf E, Brown RM Jr., Reinert H, Ursprung H. Origin and continuity of cell organelles. Springer Verlag Berlin and Hedelberg GmbH & Co. KG (Publisher). 1971;299-322.

Schnepf E, Koch W, Deichgraber G. Zur cytologie und taxonomischer Einordnung von Glaucocystis. Archieves of Microbiology. 1966;55:149-174.

Kies L. Morphology and systematic position of some endocyanomes. In W. Schwemmler and H.E.A. Schenk, Ed. Endosymbiosis and Cell Biology. Walter de Gruyter GmbH & Co. KG, Berlin (Publisher). 1980;7-19.

Bothe H, Floener L. Nitrogen fixation in Rhopalodia gibba, a diatom containing blue-greenish inclusions symbiotically. W. Schwemmler and H.E.A. Schenk, Ed. Endosymbiosis and Cell Biology, Walter de Gruyter GmbH & Co. KG, Berlin (Publisher). 1980;1:541-552.

Prince RC, Kheshgi HS. The photobiological production of hydrogen: Potential efficiency and effectiveness as a renewable fuel. Critical Reviews in Microbiology. 2005;31:19-31.

Ferreira D, Pinto FAL, Morades-Ferreira P, Mendez MV, Tamagnini P. Transcription profiles of hydrogenase related genes in the cyanobacterium Lyngbya majuscule CCAP 1446/4. BMC Microbiol. 2009;9:67.

Modak JM. Haber process for ammonium synthesis. Resonance – Journal of Science Education. 2002;7:69-77.

Seefeldt LC, Dance IG, Dean DR. Substrate interactions with nitrogenase: Fe versus Mo. Biochemistry. American Chemical Society. 2004;43(6):1401-1409.

Rivera-Ortiz, José M, Burris, Robert H. Interactions among substrates and inhibitors of nitrogenase. Journal of Bacteriology. 1975;123(2):537–545.

Oelze J. Respiratory protection of nitrogenase in Azotobacter species: Is a widely held hypothesis unequivocally supported by experimental evidence? FEMS Microbiology. 2000;24(4):321–333.

Schrauzer GN. Nonenzymatic simulation of nitrogenase reactions and the mechanism of biological nitrogen fixation. Angewandte Chemie International Edition. 2003;14(8):514-522.

Seefeldt LC, Rasche Madeline E, Ensign Scott A. Carbonyl sulfide and carbon dioxide as new substrate and carbon disulfide as a new inhibitor of nitrogenase. Biochemistry. 1995; 34(16):5382–5389.

Rasche Madeline E, Seefeldt LC. Reduction of thiocyanate, cyanate and carbon disulfide by nitrogenase: Kinetic characterization and EPR spectroscopic ananlysis. Biochemistry. 1997;36(28):8574–8585.

Amber-Leigh Golding, Yinan Zou, Xuan Yang, Bryan Flynn, Zhongmin Dong. Plant growth promoting H2 oxidizing-bacteria as seed inoculants for cereal crops. Agricultural Sciences. 2012;3:510-516.

Basuchaudhuri P. Nitrogen metabolism in rice. Cycles of life. Scientific American Library; 2000.

Herrero A, Flore E. The cyanobacteria: Molecular biology, genomics and evolution. Current Issues in Molecular Biology, 1st Ed. Caister Academic Press (Publisher); 2008.

Laplaza CE, Cummins CC. Dinitrogen cleavage by a three–coordinate Molybdenum(III) complex. Science. 1995; 268(5212):861-863.

Yamaguchi K. Recent advances in microalgal bioscience in Japan, with special reference to utilization of biomass and metabolites: A review. Journal of Applied Phycology. 1997;8:487–502.