Cited by 134Algal biology and biofuel productionPhotosynthetic Processes and MechanismsMarine and coastal plant biology

Interactions between Glucose and Inorganic Carbon Metabolism in Chlorella vulgaris Strain UAM 101

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Martínez, Flor, Orús, María Isabel·1991·PLANT PHYSIOLOGY

Abstract

Chlorella vulgaris strain UAM 101 has been isolated from the effluent of a sugar refinery. This alga requires glucose to achieve maximal growth rate even under light saturating conditions. The growth rate of cultures grown on light + CO(2) + glucose (3.16 per day) reaches the sum of those grown on light + CO(2) (1.95 per day) and on dark + glucose (1.20 per day). Unlike other Chlorella strains, uptake of glucose (about 2 micromoles per milligram dry weight per hour) was induced to the same extent in the light and dark and was not photosensitive. The rate of dark respiration was not affected by light and was strongly stimulated by the presence of glucose (up to about 40% in 4 hours). The rate of photosynthetic O(2) evolution was measured as a function of the CO(2) concentration. These experiments were conducted with cells which experienced different concentrations of CO(2) or glucose during growth. The maximal photosynthetic rate was inhibited severely by growing the cells in the presence of glucose. A rather small difference in the apparent photosynthetic affinity for extracellular inorganic carbon (from 10-30 micromolar) was found between cells grown under low and high CO(2). Growth with glucose induced a reduction in the apparent affinity (45 micromolar) even though cells had not been provided with CO(2). Experiments performed at different pH values indicate CO(2) as the major carbon species taken from the medium by Chlorella vulgaris UAM 101.

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  1. Vonshak A, Maske H (1982) Algae: growth techniques and biomass production. In J Coombs, DO Hall, eds, Techniques in Bioproductivity and Photosynthesis. Pergamon Press, Ox- ford, pp 66-77

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Authors
Martínez, F., & Orús, M. I.
Affiliations
Universidad Autónoma de Madrid (ES)
Venue
PLANT PHYSIOLOGY
Published
1991-04-01
Volume
95
Issue
4
Pages
1150-1155
ISSN
  • 0032-0889 (ISSN-L)
  • 1532-2548
OpenAlex
W2014059869
Cited by
134
References
18
Citations by year
2026: 1 · 2025: 4 · 2024: 4 · 2023: 4 · 2022: 7 · 2021: 7 · 2020: 6 · 2019: 7 · 2018: 5 · 2017: 2 · 2016: 9 · 2015: 9 · 2014: 7 · 2013: 10 · 2012: 8
FWCI
5.28
Type
journal article
Language
en
Open access
Locations
  • PLANT PHYSIOLOGY (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
Hebrew University of Jerusalem
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 plant biology
Keywords
Chlorella vulgaris, glucose metabolism, photosynthesis, dark respiration, photosynthetic oxygen evolution, CO2 uptake, algal growth rate

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