Photoautotrophic hydrogen production by eukaryotic microalgae under aerobic conditions

Title
Photoautotrophic hydrogen production by eukaryotic microalgae under aerobic conditions
Authors
황재훈김현철최정아R.A.I. Abou-ShanabBrian A. DempseyJohn M. Regan김정래송호철남인현김수남이우정박동희김용제최재영지민규정우식전병훈
Keywords
Eukaryotic algae; Hydrogen; Hydrogenase; Photoautotrophic
Issue Date
2014-02
Publisher
Nature Communications
Citation
VOL 5, 3234-1-3234-6
Abstract
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.
URI
http://pubs.kist.re.kr/handle/201004/47184
ISSN
20411723
Appears in Collections:
KIST Publication > Article
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