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. 1977 Aug;60(2):225–229. doi: 10.1104/pp.60.2.225

Plastocyanin as the Possible Site of Photosynthetic Electron Transport Inhibition by Glutaraldehyde 1

Haim Hardt a, Bessel Kok a
PMCID: PMC542585  PMID: 16660065

Abstract

Treatment of spinach chloroplasts with glutaraldehyde causes an inhibition in the electron transport chain between the two photosystems. Measurements of O2 flash yields, pH exchange, and fluorescence induction show that the O2 evolving apparatus, photosystem II and its electron acceptor pool are not affected. The behavior of P700 indicates that its reduction but not its oxidation, is severely inhibited. Cytochrome f is still reducible by photosystem II but also slowly oxidizable by photosystem I. The sensitivity of isolated plastocyanin to glutaraldehyde further supports the conclusion that glutaraldehyde inhibits at the plastocyanin level and thereby induces a break between P700 and cytochrome f.

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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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