Photoautotrophic hydrogen production by eukaryotic microalgae under aerobic conditions
- Photoautotrophic hydrogen production by eukaryotic microalgae under aerobic conditions
- 황재훈; 김현철; 최정아; R.A.I. Abou-Shanab; Brian A. Dempsey; John M. Regan; 김정래; 송호철; 남인현; 김수남; 이우정; 박동희; 김용제; 최재영; 지민규; 정우식; 전병훈
- Eukaryotic algae; Hydrogen; Hydrogenase; Photoautotrophic
- Issue Date
- Nature Communications
- VOL 5, 3234-1-3234-6
- Eukaryotic algae and cyanobacteria produce hydrogen under anaerobic and limited aerobic conditions. Here we show that novel microalgal strains (Chlorella vulgaris YSL01 and YSL16) upregulate the expression of the hydrogenase gene (HYDA) and simultaneously produce hydrogen through photosynthesis, using CO2 as the sole source of carbon under aerobic conditions with continuous illumination. We employ dissolved oxygen regimes that represent natural aquatic conditions for microalgae. The experimental expression of HYDA and the specific activity of hydrogenase demonstrate that C. vulgaris YSL01 and YSL16 enzymatically produce hydrogen, even under atmospheric conditions, which was previously considered infeasible. Photoautotrophic H2 production has important implications for assessing ecological and algae-based photolysis.
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