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. 1977 Aug;74(8):3377–3381. doi: 10.1073/pnas.74.8.3377

Quantum efficiency of photosynthetic energy conversion.

R K Chain, D I Arnon
PMCID: PMC431568  PMID: 20627

Abstract

The quantum efficiency of photosynthetic energy conversion was investigated in isolated spinach chloroplasts by measurements of the quantum requirements of ATP formation by cyclic and noncyclic photophosphorylation catalyzed by ferredoxin. ATP formation had a requirement of about 2 quanta per 1 ATP at 715 nm (corresponding to a requirement of 1 quantum per electron) and a requirement of 4 quanta per ATP (corresponding to a requirement of 2 quanta per electron) at 554 nm. When cyclic and noncyclic photophosphorylation were operating concurrently at 554 nm, a total of about 12 quanta was required to generate the two NADPH and three ATP needed for the assimilation of one CO2 to the level of glucose.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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