Effect of light and development of photosynthetic cells: Final report
Technical Report
·
OSTI ID:6840126
Green algae exposed to an anaerobic environment ''adapt'' to a hydrogen metabolism and can photooxidize H/sub 2/O to H/sub 2/ and O/sub 2/ as well as carbon compounds to H/sub 2/ and CO/sub 2/. The products from fermentation of chloroplastic starch included acetate, formate, ethanol, CO/sub 2/, H/sub 2/, glycerol, and lactate. Light caused an increase in H/sub 2/ and CO/sub 2/ and decreases in acetate and ethanol. Aerobically isolated algal chloroplasts adapted to a hydrogen metabolism where H/sub 2/ was evolved. The oxyhydrogen reaction was not detected in the chloroplasts. Acetate is photoassimilated anaerobically by Chlamydomonas cells to lipid, carbohydrate, CO/sub 2/, and H/sub 2/ with a stoichiometry indicating a light-dependent anaerobic glyoxylate cycle as the primary assimilatory pathway.
- Research Organization:
- Brandeis Univ., Waltham, MA (USA)
- DOE Contract Number:
- AC02-76ER03231
- OSTI ID:
- 6840126
- Report Number(s):
- DOE/ER/03231-10; ON: DE87005183
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
08 HYDROGEN
080106 -- Hydrogen-- Production-- Biosynthesis & Photochemical Processes
14 SOLAR ENERGY
140505* -- Solar Energy Conversion-- Photochemical
Photobiological
& Thermochemical Conversion-- (1980-)
550500 -- Metabolism
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59 BASIC BIOLOGICAL SCIENCES
ALGAE
ANAEROBIC CONDITIONS
BIOLOGICAL ADAPTATION
BIOLOGICAL PATHWAYS
CATABOLISM
CELL CONSTITUENTS
CHLAMYDOMONAS
CHLOROPLASTS
ELEMENTS
HYDROGEN
METABOLISM
MICROORGANISMS
NONMETALS
PLANTS
UNICELLULAR ALGAE
080106 -- Hydrogen-- Production-- Biosynthesis & Photochemical Processes
14 SOLAR ENERGY
140505* -- Solar Energy Conversion-- Photochemical
Photobiological
& Thermochemical Conversion-- (1980-)
550500 -- Metabolism
550700 -- Microbiology
59 BASIC BIOLOGICAL SCIENCES
ALGAE
ANAEROBIC CONDITIONS
BIOLOGICAL ADAPTATION
BIOLOGICAL PATHWAYS
CATABOLISM
CELL CONSTITUENTS
CHLAMYDOMONAS
CHLOROPLASTS
ELEMENTS
HYDROGEN
METABOLISM
MICROORGANISMS
NONMETALS
PLANTS
UNICELLULAR ALGAE