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Increased CO2 enhances nitrogen fixation and growth in the marine cyanobacterium Trichodesmium IMS101
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SYSNO ASEP 0099276 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Increased CO2 enhances nitrogen fixation and growth in the marine cyanobacterium Trichodesmium IMS101 Title Zvýšená koncentrace CO2 zvýší fixaci dusíku a růst mořské sinice Trichodesmium IMS101 Author(s) Levitan, O. (IL)
Prášil, Ondřej (MBU-M) RID, ORCID
Berman-Frank, I. (IL)Source Title Aquafluo - Chlorophyll Fluorescence in Aquatic Sciences Meeting. - Nové Hrady : Springer, 2007 Pages s. 54-54 Number of pages 1 s. Action Aquafluo - Chlorophyll Fluorescence in Aquatic Sciences Meeting Event date 28.05.2007-01.06.2007 VEvent location Nové Hrady Country CZ - Czech Republic Event type WRD Language eng - English Country CZ - Czech Republic Keywords nirogen fixation ; global change ; trichodesmium Subject RIV EE - Microbiology, Virology CEZ AV0Z50200510 - MBU-M (2005-2011) Annotation Anthropogenic increases in atmospheric pCO2 over the last century are accompanied by higher concentrations of CO2 (aq) in the surface oceans. These changes could influence aquatic primary production including cyanobacterial nitrogen-fixers via the coupling between photosynthesis and nitrogen-fixation. We hypothesized that elevated pCO2 levels may enhance nitrogen fixation and photosynthesis in the bloom-forming, diazotrophic, cyanobacterium Trichodesmium spp. that contributes greatly to primary production in the oligotrophic subtropical and tropical oceans. We acclimated cultures of Trichodesmium IMS101 to 3 pCO2s (pre-industrial -250 ppmv, current - 400, future -900 ppmv) and examined changes in morphology, photosynthesis, nitrogen fixation, and growth. High pCO2 enhanced growth, filament length and nitrogen fixation of Trichodesmium in comparison with both ambient and low pCO2 acclimated cultures Workplace Institute of Microbiology Contact Eliška Spurná, eliska.spurna@biomed.cas.cz, Tel.: 241 062 231 Year of Publishing 2008
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