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Photosynthetic accumulation of carbon storage compounds under CO2 enrichment by the thermophilic cyanobacterium Thermosynechococcus elongatus Public Deposited

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https://ir.library.oregonstate.edu/concern/articles/7d278t929

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  • The growth characteristics of Thermosynechococcus elongatus on elevated CO₂ were studied in a photobioreactor. Cultures were able to grow on up to 20% CO₂. The maximum productivity and CO₂ fixation rates were 0.09 ± A 0.01 and 0.17 ± A 0.01 mg ml⁻¹ day⁻¹, respectively, for cultures grown on 20% CO₂. Three major carbon pools-lipids, polyhydroxybutyrates (PHBs), and glycogen-were measured. These carbon stores accounted for 50% of the total biomass carbon in cultures grown on atmospheric CO₂ (no supplemental CO₂), but only accounted for 30% of the total biomass carbon in cultures grown on 5-20% CO₂. Lipid content was approximately 20% (w/w) under all experimental conditions, while PHB content reached 14.5% (w/w) in cultures grown on atmospheric CO₂ and decreased to approximately 2.0% (w/w) at 5-20% CO₂. Glycogen levels did not vary significantly and remained about 1.4% (w/w) under all test conditions. The maximum amount of CO₂ sequestered over the course of the nine-day chemostat experiment was 1.15 g l⁻¹ in cultures grown on 20% CO₂.
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  • Eberly, J., & Ely, R. (2012). Photosynthetic accumulation of carbon storage compounds under CO2 enrichment by the thermophilic cyanobacterium thermosynechococcus elongatus. Journal of Industrial Microbiology & Biotechnology, 39(6), 843-850. doi: 10.1007/s10295-012-1092-2
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  • 39
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  • 6
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  • This work was supported in part by the DOD/ASEE SMART scholarship program. Special thanks to Markael Luterra for editorial assistance.
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  • description.provenance : Approved for entry into archive by Deborah Campbell(deborah.campbell@oregonstate.edu) on 2013-01-31T18:50:19Z (GMT) No. of bitstreams: 1 EberlyJedOBiologicalEcologicalEngineeringPhotosyntheticAccumulationCarbon.pdf: 471906 bytes, checksum: 4ec611cbe6b4f182603809bef96365ca (MD5)
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