Cited by 25Algal biology and biofuel productionMicrobial Metabolic Engineering and BioproductionAnaerobic Digestion and Biogas Production

Contribution of a sodium ion gradient to energy conservation during fermentation in the cyanobacterium Arthrospira (Spirulina) maxima CS-328

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Carrieri, Damian, Ananyev, Gennady, Lenz, Oliver, Bryant, Donald A., Dismukes, G. Charles·2011·Applied and Environmental Microbiology

Abstract

Sodium gradients in cyanobacteria play an important role in energy storage under photoautotrophic conditions but have not been well studied during autofermentative metabolism under the dark, anoxic conditions widely used to produce precursors to fuels. Here we demonstrate significant stress-induced acceleration of autofermentation of photosynthetically generated carbohydrates (glycogen and sugars) to form excreted organic acids, alcohols, and hydrogen gas by the halophilic, alkalophilic cyanobacterium Arthrospira (Spirulina) maxima CS-328. When suspended in potassium versus sodium phosphate buffers at the start of autofermentation to remove the sodium ion gradient, photoautotrophically grown cells catabolized more intracellular carbohydrates while producing 67% higher yields of hydrogen, acetate, and ethanol (and significant amounts of lactate) as fermentative products. A comparable acceleration of fermentative carbohydrate catabolism occurred upon dissipating the sodium gradient via addition of the sodium-channel blocker quinidine or the sodium-ionophore monensin but not upon dissipating the proton gradient with the proton-ionophore dinitrophenol (DNP). The data demonstrate that intracellular energy is stored via a sodium gradient during autofermentative metabolism and that, when this gradient is blocked, the blockage is compensated by increased energy conversion via carbohydrate catabolism.

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  • Increased osmotic stress can induce Arthrospira cells to synthesize osmoprotectants (trehalose, glucosyl-glycerol, and glucosyl-glycerate).

    “An increase in osmotic stress can induce Arthrospira cells to synthesize osmoprotectants (trehalose, glucosyl-glycerol, and glucosyl-glycerate) [76]”

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Research works printed but not linked: 3

  1. [1]1. Ananyev G., Carrieri D., Dismukes G. C. 2008. Optimizing metabolic capacity and flux through environmental cues to maximize hydrogen production by cyanobacterium Arthrospira maxima. Appl. Environ. Microbiol. 74:6102–6113 [DOI] [PMC free article] [PubMed] [Google Scholar]
  2. [40]40. Steuber J. 2001. Na+ translocation by bacterial NADH:quinone oxidoreductases: an extension to the complex-I family of primary redox pumps. Biochim. Biophys. Acta 1505:45–56 [DOI] [PubMed] [Google Scholar]
  3. [42]42. Tadros M. G., MacElroy R. D. 1988. Characterization of Spriulina biomass for CELSS diet potential. NASA-CR-185329, NASA contractor NCC 2-501. Alabama A&M University, Normal, AL [Google Scholar]

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Authors
Carrieri, D., Ananyev, G., Lenz, O., Bryant, D. A., & Dismukes, G. C.
Affiliations
  • Princeton University (US)
  • Rutgers, The State University of New Jersey (US)
  • Pennsylvania State University (US)
Corresponding author
Dismukes, G. Charles
Venue
Applied and Environmental Microbiology
Published
2011-10-15
Volume
77
Issue
20
Pages
7185-7194
ISSN
  • 0099-2240 (ISSN-L)
  • 1098-5336
OpenAlex
W2017643938
Cited by
25
References
51
Citations by year
2026: 1 · 2025: 1 · 2023: 1 · 2021: 5 · 2020: 3 · 2017: 3 · 2016: 2 · 2015: 3 · 2014: 4 · 2012: 2
FWCI
0.80
Type
journal article
Language
en
Open access
Locations
  • Applied and Environmental Microbiology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • U.S. Department of Energy (FG02-07ER64488, DE‐FG02‐)
  • Deutsche Forschungsgemeinschaft (SFB 498)
  • U.S. Air Force (FA9550)
  • Multidisciplinary University Research Initiative (FA9550-05-1-0365)
  • National Renewable Energy Laboratory
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Algal biology and biofuel production
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Microbial Metabolic Engineering and Bioproduction
  • Physical Sciences › Engineering › Building and Construction › Anaerobic Digestion and Biogas Production
Keywords
Arthrospira maxima, Spirulina, hydrogen production, carbohydrate catabolism, energy conservation, sodium channel blockade, quinidine, monensin, proton gradient, glycogen, acetate, ethanol, lactate, halophilic cyanobacteria
MeSH terms
Alcohols, Carboxylic Acids, DNA, Bacterial, Energy Metabolism, Fermentation, Hydrogen, Ions, Molecular Sequence Data, Potassium, Sodium, Sequence Analysis, DNA, Carbohydrate Metabolism, Phototrophic Processes, Autotrophic Processes, Spirulina

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