Cited by 50Algal biology and biofuel productionPhotosynthetic Processes and MechanismsMarine and coastal ecosystems

Nitrogen, phosphorus and high CO2 modulate photosynthesis, biomass and lipid production in the green alga Chlorella vulgaris

Kumari, Kanchan, Samantaray, Shilalipi, Sahoo, Dinabandhu, Tripathy, Baishnab C·2021·Photosynthesis Research

Abstract

Climate change could impact nutrient bioavailability in aquatic environment. To understand the interaction of nutrient bioavailability and elevated CO 2, Chlorella vulgaris cells were grown in ambient air or 5% CO 2 in different concentrations of nitrogen and phosphorus in a photobioreactor. The chlorophyll content, photosynthesis and respiration rates increased in 5% CO 2 to support higher biomass production. The nutrient limitation in the growth media resulted in reduced photosynthetic rates of the algal cells and their PSI, PSII, and whole chain electron transport rates and biomass production. Conversely, their lipid content increased partly due to upregulation of expression of several lipid biosynthesis genes. The order of downregulation of photosynthesis and upregulation in lipid production due to nutrient limitation was in the order of N > P. The N-50 and 5% CO 2 culture had only 10% reduction in biomass and 32% increase in lipids having 85% saturated fat required for efficient biofuel production. This growth condition is ideal for generation of biodiesel required to reduce the consumption of fossil fuel and combat global warming.

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Crossref · 10.1007/s11120-021-00828-0

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76 of 76 references verified0 citation errors · 0 not checkable

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Authors
Kumari, K., Samantaray, S., Sahoo, D., & Tripathy, B. C.
Affiliations
  • University of Delhi (IN)
  • Jawaharlal Nehru University (IN)
Corresponding author
  • Sahoo, Dinabandhu
  • Tripathy, Baishnab C
Venue
Photosynthesis Research
Published
2021-04-04
Volume
148
Issue
1-2
Pages
17-32
ISSN
  • 0166-8595 (ISSN-L)
  • 1573-5079
OpenAlex
W3144417508
Cited by
50
References
76
Citations by year
2026: 8 · 2025: 18 · 2024: 9 · 2023: 6 · 2022: 9
FWCI
1.13
Type
journal article
Language
en
Open access
closed
Locations
  • Photosynthesis Research (publishedVersion)
  • PubMed (publishedVersion)
Funders
Department of Biotechnology, (2/662017 -IBSD)
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Algal biology and biofuel production
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Photosynthetic Processes and Mechanisms
  • Physical Sciences › Earth and Planetary Sciences › Oceanography › Marine and coastal ecosystems
Keywords
Chlorella vulgaris, elevated CO2, nitrogen limitation, phosphorus limitation, photosynthesis, biomass production, lipid production, electron transport, chlorophyll content, lipid biosynthesis genes, nutrient bioavailability, biodiesel, microalgae
MeSH terms
Carbon Dioxide, Cells, Cultured, Nitrogen, Phosphorus, Photosynthesis, Biomass, Chlorella vulgaris, Lipid Metabolism, Biofuels, Photobioreactors

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