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Hong, Haizheng; Shen, Rong; Zhang, Futing; Wen, Zuozhu; Chang, Siwei; Lin, Wenfang; Kranz, Sven A; Luo, Ya-Wei; Kao, Shuh-Ji; Morel, Francois M M; Shi, Dalin (2017): Growth rate, short-term N2 fixation rate, K1/2(DIC), cytosolic pH, and protein abundance of Trichodesmium IMS101, and diazotroph community composition, N2 fixation rate and nifH gene transcription of Trichodesmium spp. collected from NSCS surface water [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.874127, Supplement to: Hong, H et al. (2017): The complex effects of ocean acidification on the prominent N2-fixing cyanobacterium Trichodesmium. Science, 356(6337), 527-531, https://doi.org/10.1126/science.aal2981

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Abstract:
Acidification of seawater caused by anthropogenic carbon dioxide (CO2) is anticipated to influence the growth of dinitrogen (N2)-fixing phytoplankton, which contribute a large fraction of primary production in the tropical and subtropical ocean. We found that growth and N2-fixation of the ubiquitous cyanobacterium Trichodesmium decreased under acidified conditions, notwithstanding a beneficial effect of high CO2. Acidification resulted in low cytosolic pH and reduced N2-fixation rates despite elevated nitrogenase concentrations. Low cytosolic pH required increased proton pumping across the thylakoid membrane and elevated adenosine triphosphate production. These requirements were not satisfied under field or experimental iron-limiting conditions, which greatly amplified the negative effect of acidification.
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Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
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6 datasets

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Datasets listed in this publication series

  1. Hong, H; Shen, R; Zhang, F et al. (2017): (Figure 1) The effect of ocean acidification on growth and short-term N2-fixation of Trichodesmium erythraeum. https://doi.org/10.1594/PANGAEA.874126
  2. Hong, H; Shen, R; Zhang, F et al. (2017): (Figures 2A, C-F) Separate effects of increasing pCO2 and decreasing pH on growth, N2-fixation, K1/2(DIC), cytosolic pH and NifH abundance of Trichodesmium erythraeum. https://doi.org/10.1594/PANGAEA.874122
  3. Hong, H; Shen, R; Zhang, F et al. (2017): (Figure 2B) Separate effects of increasing pCO2 and decreasing pH on growth, N2-fixation, K1/2(DIC), cytosolic pH and NifH abundance of Trichodesmium erythraeum. https://doi.org/10.1594/PANGAEA.874123
  4. Hong, H; Shen, R; Zhang, F et al. (2017): (Figures 3A+C) Changes of protein abundance in response to ocean acidification in Trichodesmium erythraeum. https://doi.org/10.1594/PANGAEA.874143
  5. Hong, H; Shen, R; Zhang, F et al. (2017): (Figure 4-1) Diazotroph community composition in NSCS surface seawater. https://doi.org/10.1594/PANGAEA.874124
  6. Hong, H; Shen, R; Zhang, F et al. (2017): (Figure 4-2) The effect of ocean acidification on N2-fixation and Trichodesmium spp. nifH transcription in NSCS surface seawater. https://doi.org/10.1594/PANGAEA.874125