Impact of combined nitrogen sources on growth and synthesis of bioactive compounds in Synechococcus elongatus Nägeli, a coccoid cyanobacterium | ||
| Egyptian Journal of Botany | ||
| Articles in Press, Accepted Manuscript, Available Online from 03 October 2025 | ||
| Document Type: Regular issue (Original Article) | ||
| DOI: 10.21608/ejbo.2025.299856.2900 | ||
| Authors | ||
| Kuntal Sarma1, 2; Nirlep Kour3; Harshdeep Sharma1, 4; Prashant Kumar5; Harshita Vashistha6; Archasvi Tyagi7; . Doli1; Gauri .1; Deepti Gupta1; Manju Sharma2; Rama Kant* 1; Narendra Kumar8; Nikhil Chandra Halder9 | ||
| 1Department of Botany, Chaudhary Charan Singh University, Meerut-250004, India | ||
| 2Amity Institute of Biotechnology, Amity University, Manesar, Gurgaon, Haryana-122413, India | ||
| 3Department of Botany, Raghunath Girls’ PG College, Meerut-250004, India | ||
| 4Directorate of Environment Forest and Climate Change, Lucknow -226001, India | ||
| 5Department of Smart Agriculture, COER University, Roorkee Haridwar -249404, India | ||
| 6Department of Botany and Microbiology, Gurukul Kangri (Deemed to be University), Haridwar-247667, India | ||
| 7Department of Botany, Maa Shakumbhari University, Saharanpur-247120, India | ||
| 8Department of Botany, Guru Ghasidas Vishwavidyalaya (A Central University), Bilaspur-495009 (C.G.), India | ||
| 9Department 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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