Volume 14, Issue 65 (vol. 14, no. 65 2025)
2025, 14(65): 225-240 |
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Shahabi R, Shariati M. The effect of ethanolamine on lipid production and its relationship with beta-carotene in the unicellular green alga Dunaliella. Plant Process and Function 2025; 14 (65) : 14
URL: http://jispp.iut.ac.ir/article-1-2109-en.html
URL: http://jispp.iut.ac.ir/article-1-2109-en.html
1- Department of Plant and Animal Biology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran
2- Department of Plant and Animal Biology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran ,mansour_shariati@yahoo.com
2- Department of Plant and Animal Biology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran ,
Abstract: (87 Views)
Unicellular green alga Dunaliella is very important in physiological studies due to its resistance to salinity stress and its lack of cell walls. Many microalgae are rich in sources of lipids and fatty acids, which can be used to produce biodiesel, which is less polluting than fossil fuel. The effect of 10, 25, 50, 75, 100, and 120 micromolar ethanolamine concentrations was examined on the growth rate, chlorophyll, and beta-carotene content of two algae D. salina and D. bardawil, as well as the saturated and unsaturated fatty acids profile. The results showed that low concentrations of ethanolamine did not affect the growth rate and chlorophyll content whereas high concentrations inhibited growth rate and chlorophyll synthesis. In general, both algae were not affected by ethanolamine, only lipid content in D. bardawil increased at 50 micromolar ethanolamine. It seems, that in high concentrations of ethanolamine treatment, the suberates, and the energy instead of being used in cell division and chlorophyll synthesis, probably deviated in response to high concentrations of ethanolamine or lipid synthesis. In two applied ethanolamine concentrations (25 and 50 micromolar) and control during one-week experiments, D. salina had two times higher lipid content than D. bardawil. Moreover, D. bardawil showed higher beta-carotene content than D. salina. The lower beta-carotene and higher lipid content in D. salina and higher beta-carotene and lower lipid content in D. bardawil revealed the probable relationship between lipid production and beta-carotene content. Under the treatment of ethanolamine, no big changes in the saturated and unsaturated fatty acid profiles were observed in D. salina. An increase in heptadecanoic acid as a saturated fatty acid and oleic acid as unsaturated fatty acid in D. bardawil was detected.
Article number: 14
Type of Study: Research |
Subject:
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Received: 2024/08/13 | Accepted: 2024/10/1 | Published: 2025/05/3
Received: 2024/08/13 | Accepted: 2024/10/1 | Published: 2025/05/3
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