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- Title
Genetic Engineering of Cyanobacteria to Enhance Biohydrogen Production from Sunlight and Water.
- Authors
Masukawa, Hajime; Kitashima, Masaharu; Inoue, Kazuhito; Sakurai, Hidehiro; Hausinger, Robert
- Abstract
To mitigate global warming caused by burning fossil fuels, a renewable energy source available in large quantity is urgently required. We are proposing large-scale photobiological H production by mariculture-raised cyanobacteria where the microbes capture part of the huge amount of solar energy received on earth's surface and use water as the source of electrons to reduce protons. The H production system is based on photosynthetic and nitrogenase activities of cyanobacteria, using uptake hydrogenase mutants that can accumulate H for extended periods even in the presence of evolved O. This review summarizes our efforts to improve the rate of photobiological H production through genetic engineering. The challenges yet to be overcome to further increase the conversion efficiency of solar energy to H also are discussed.
- Subjects
MICROBIAL genetic engineering; CYANOBACTERIA; GLOBAL warming; FOSSIL fuels; SOLAR energy; MARICULTURE; HYDROGENASE; NITROGENASES
- Publication
AMBIO - A Journal of the Human Environment, 2012, Vol 41, p169
- ISSN
0044-7447
- Publication type
Article
- DOI
10.1007/s13280-012-0275-4