Photosynthesis in intermittent illumination | Zendy

George E. Briggs | Zendy

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Photosynthesis in intermittent illumination

Author(s) -

George E. Briggs

Publication year - 1941

Publication title -

proceedings of the royal society of london. series b, biological sciences

Language(s) - English

Resource type - Journals

eISSN - 2053-9193

pISSN - 0080-4649

DOI - 10.1098/rspb.1941.0002

Subject(s) - carbon dioxide , photosynthesis , flash (photography) , chlorophyll , chemistry , molecule , yield (engineering) , photochemistry , chlorophyll a , carbon fibers , materials science , optics , biochemistry , organic chemistry , physics , composite material , composite number

The reduction of one molecule of carbon dioxide per two thousand molecules of chlorophyll after each intense flash of light of very short duration, while three hundred or m ore are reduced when the duration of the flash is greatly increased, can be explained by assuming that chlorophyll sensitizes the activation of a substance A which, by handing on its energy, causes the reduction of carbon dioxide in combination with a substance S. The decay of activated A is a relatively rapid process while that of the activated compound of carbon dioxide and S is relatively slow. The yield for short flashes is determined by A , that for long flashes by S. The ratio of to A is of the order of 100.

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