Impact of combined nitrogen sources on growth and synthesis of bioactive compounds in Synechococcus elongatus Nägeli, a coccoid cyanobacterium | ||
| Egyptian Journal of Botany | ||
| Article 4, Volume 65, Issue 4, October 2025, Pages 71-80 PDF (3.41 M) | ||
| Document Type: Regular issue (Original Article) | ||
| DOI: 10.21608/ejbo.2025.299856.2900 | ||
| Authors | ||
| Kuntal Sarma1; Nirlep Kour2; Harshdeep Sharma3; Prashant Kumar4; Harshita Vashistha5; Archasvi Tyagi6; . Doli7; Gauri .7; Deepti Gupta7; Manju Sharma8; Rama Kant* 7; Narendra Kumar9; Nikhil Chandra Halder10 | ||
| 1Department of Botany, Chaudhary Charan Singh University, Meerut-250004, India., Amity Institute of Biotechnology, Amity University, Manesar, Gurgaon, Haryana-122413, India. | ||
| 2Department of Botany, Raghunath Girls’ PG College, Meerut-250004, India. | ||
| 3Department of Botany, Chaudhary Charan Singh University, Meerut-250004, India., Directorate of Environment Forest and Climate Change, Lucknow -226001, India. | ||
| 4Department of Smart Agriculture, COER University, Roorkee Haridwar -249404, India | ||
| 5Department of Botany and Microbiology, Gurukul Kangri (Deemed to be University), Haridwar-247667, India | ||
| 6Department of Botany, Maa Shakumbhari University, Saharanpur-247120, India | ||
| 7Department of Botany, Chaudhary Charan Singh University, Meerut-250004, India | ||
| 8Amity Institute of Biotechnology, Amity University, Manesar, Gurgaon, Haryana-122413, India | ||
| 9Department of Botany, Guru Ghasidas Vishwavidyalaya (A Central University), Bilaspur-495009 (C.G.), India | ||
| 10Department of Botany, Uluberia College, Howrah-711315 (W.B.), India | ||
| Abstract | ||
| The present communication deals with the effect of different combined nitrogen sources viz. urea, ammonium chloride, sodium nitrate and potassium nitrate as a sole nitrogen source on the growth of Synechococcus elongatus. The effect of different nitrogen sources were evaluated on the basis of biomass, growth rate, generation time and biological carbon sequestration. Study was conducted on the synthesis of primary, accessory photosynthetic pigments and photo-protective pigment under semi-continuous influence of different sources of combined nitrogen. Sodium nitrate in the nutrient medium could proliferate growth rate and lower generation time of S. elongatus and it is also responsible for maximum biological carbon sequestration, synthesis of bioactive compounds like chlorophyll-a, carotenoids and phycobilins. Potassium nitrate as a sole nitrogen source could be responsible for enhanced production of total protein in S. elongatus cells. On evaluation of all four different nitrogen sources it could be concluded that sodium nitrate is the best source of nitrogen while urea could be toxic for S. elongatus. | ||
| Keywords | ||
| Bioactive compounds; Combined nitrogen; Cyanobacteria; Generation time; Growth rate | ||
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