LIPID SYNTHESIS AND FATTY ACID COMPOSITION IN NANNOCHLOROPSIS SP. (EUSTIGMATOPHYCEAE) GROWN IN A LIGHT‐DARK CYCLE 1
Abstract
Chemical composition and lipid biosynthesis were studied in the marine eustigmatophyte Nannochloropsis sp. Grown under a 12:12 h light‐dark regime. Cellular division occurred in the dark and was associated with a reduction in cell volume. The cellular content of chlorophyll a and carotenoids increased during the light period and decreased during the dark period. Other cellular components, such as proteins, carbohydrates and lipids, followed a similar pattern. Nannochloropsis sp. Incorporated acetate, mostly into lipids during the light period, whereas a low rate of acetate incorporation was observed during the dark period, mostly into nonlipid compounds. Neutral lipids such as triacylglycerol were synthesized and accumulated in the light and showed a rapid turnover in the dark. Polar structural lipids such as monogalactosyl diacylglycerol were synthesized during the light period and hardly turned over during the dark period. Changes in lipid content were associated with variations in cellular fatty acid composition. The light period was characterized by an increase in the percentage of C16:0 and 16:1 fatty acids associated with triacylglycerols. However, in the dark period, as triglycerides were consumed for cellular maintenance, the relative distribution of the C20:5 fatty acid associated with the galactolipids increased.
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The relative composition of algal lipids depends greatly on the species used and the nutrient, environmental and developmental conditions in which the cells are cultured and harvested.
“The relative composition of algal lipids depends greatly on the species used and the nutrient, environmental and developmental conditions in which the cells are cultured and harvested [11][12][13][14].”
From Review of Methods Used for Microalgal Lipid-Content Analysis (2011) · cites this paper as [13]
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- Authors
- Sukenik, A., & Carmeli, Y.
- Affiliations
- Israel Oceanographic and Limnological Research (IL)
- ORCID
- Sukenik, Assaf
- Venue
- Journal of Phycology
- Publisher
- Wiley
- Published
- 1990-09
- Volume
- 26
- Issue
- 3
- Pages
- 463-469
- ISSN
- 0022-3646 (ISSN-L)
- 1529-8817
- OpenAlex
- W2004626457
- Cited by
- 124
- References
- 1
- Citations by year
- 2026: 1 · 2025: 2 · 2024: 1 · 2023: 1 · 2022: 1 · 2021: 2 · 2020: 6 · 2019: 4 · 2018: 2 · 2017: 7 · 2016: 8 · 2015: 8 · 2014: 6 · 2013: 6 · 2012: 11
- FWCI
- 7.47
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Phycology (publishedVersion)
- Topics
- Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Algal biology and biofuel production
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Lipid metabolism and biosynthesis
- Life Sciences › Agricultural and Biological Sciences › Aquatic Science › Aquaculture Nutrition and Growth
- Keywords
- Nannochloropsis, eustigmatophytes, lipogenesis, fatty acid composition, light-dark cycle, triglycerides, monogalactosyldiacylglycerol, galactolipids, acetate incorporation, chlorophyll a, carotenoids, cell division, cell volume, microalgae
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