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Cited by 133Algal biology and biofuel productionAquatic Ecosystems and Phytoplankton DynamicsMicrobial Metabolic Engineering and Bioproduction

The DOI matches its Crossref record; 24 of the 25 references it cites were found in a registry or an index.

Biomass Productivities in Wild Type and Pigment Mutant of Cyclotella sp. (Diatom)

Huesemann, Michael H., Hausmann, Tom S., Bartha, Richard, Aksoy, M., Weissman, Joseph C., Benemann, John R.·2009·Applied Biochemistry and Biotechnology
DOI 10.1007/s12010-008-8298-9
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Abstract

Microalgae are expected to play a significant role in greenhouse gas mitigation because they can utilize CO(2) from power plant flue gases directly while producing a variety of renewable carbon-neutral biofuels. In order for such a microalgal climate change mitigation strategy to become economically feasible, it will be necessary to significantly improve biomass productivities. One approach to achieve this objective is to reduce, via mutagenesis, the number of light-harvesting pigments, which, according to theory, should significantly improve the light utilization efficiency, primarily by increasing the light intensity at which photosynthesis saturates (I(s)). Employing chemical (ethylmethylsulfonate) and UV mutagenesis of a wild-type strain of the diatom Cyclotella, approximately 10,000 pigment mutants were generated, and two of the most promising ones (CM1 and CM1-1) were subjected to further testing in both laboratory cultures and outdoor ponds. Measurements of photosynthetic oxygen production rates as a function of light intensity (i.e., P-I curves) of samples taken from laboratory batch cultures during the exponential and linear growth phase indicated that the light intensity at which photosynthesis saturates (I(s)) was two to three times greater in the pigment mutant CM1-1 than in the wild type, i.e., 355-443 versus 116-169 mumol/m(2) s, respectively. While theory, i.e., the Bush equation, predicts that such a significant gain in I(s) should increase light utilization efficiencies and thus biomass productivities, particularly at high light intensities, no improvements in biomass productivities were observed in either semi-continuous laboratory cultures or outdoor ponds. In fact, the maximum biomass productivity in semi-continuous laboratory culture was always greater in the wild type than in the mutant, namely 883 versus 725 mg/L day, respectively, at low light intensity (200 micromol/m(2) s) and 1,229 versus 1,043 mg/L day, respectively, at high light intensity (1,000 micromol/m(2) s). Similarly, the biomass productivities measured in outdoor ponds were significantly lower for the mutant than for the wild type. Given that these mutants have not been completely characterized in these initial studies, the exact reasons for their poor performance are not known. Most likely, it is possible that the mutation procedure affected other photosynthetic or metabolic processes. This hypothesis was partially validated by the observation that the pigment mutant had a longer lag period following inoculation, a lower maximum specific growth rate, and poorer stability than the wild type.

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Research works printed but not linked: 2

  1. Huesemann, M. H., Bartha, R., Hausmann, T. S., & Benemann, J. R. (2003). An innovative approach for screening marine microalgae for maximum flue gas CO2 biofixation potential. Proceedings of the Second Annual Conference on Carbon Sequestration, Alexandria, VA.
  2. Pedroni, P., Davison, J., Beckert, H., Bergman, P., & Benemann, J. (2001). A proposal to establish an international network for biofixation of CO2 and greenhouse gas abatement with microalgae. Proceedings of the Department of Energy NETL First National Conference on Carbon Sequestration, Washington DC, May.

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Metadata

Authors
Huesemann, M. H., Hausmann, T. S., Bartha, R., Aksoy, M., Weissman, J. C., & Benemann, J. R.
Affiliations
  • Pacific Northwest National Laboratory (US)
  • Brooklyn College (US)
Corresponding author
Huesemann, Michael H.
ORCID
Venue
Applied Biochemistry and Biotechnology
Publisher
Springer Science and Business Media LLC
Published
2008-07-03
Volume
157
Issue
3
Pages
507-526
ISSN
  • 0273-2289 (ISSN-L)
  • 1559-0291
DOI
10.1007/s12010-008-8298-9
OpenAlex
W2019742071
Cited by
133
References
25
Citations by year
2025: 3 · 2024: 3 · 2023: 8 · 2022: 10 · 2021: 8 · 2020: 3 · 2019: 7 · 2018: 9 · 2017: 9 · 2016: 11 · 2015: 12 · 2014: 10 · 2013: 12 · 2012: 12
FWCI
3.03
Type
journal article
Language
en
Open access
closed
Licence
www.springer.com/tdm (tdm)
Locations
  • Applied Biochemistry and Biotechnology (publishedVersion)
  • PubMed (publishedVersion)
Funders
City University of New York
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Algal biology and biofuel production
  • Physical Sciences › Environmental Science › Environmental Chemistry › Aquatic Ecosystems and Phytoplankton Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Microbial Metabolic Engineering and Bioproduction
Keywords
Cyclotella, diatoms, light-harvesting pigments, pigment mutants, biomass productivity, photosynthetic oxygen production, light use efficiency, microalgal biofuels, CO2 capture, flue gas utilization, UV mutagenesis, outdoor ponds, semi-continuous culture
MeSH terms
Light, Photosynthesis, Mutagenesis, Diatoms, Biomass

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