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. 1982 Aug;70(2):437–441. doi: 10.1104/pp.70.2.437

Resistance to Injury by Sulfur Dioxide 1

Correlation with Its Reduction to, and Emission of, Hydrogen Sulfide in Cucurbitaceae

Jiro Sekiya 1,2, Lloyd G Wilson 1, Philip Filner 1,3
PMCID: PMC1067165  PMID: 16662511

Abstract

In Cucurbitaceae young leaves are resistant to injury from acute exposure to SO2, whereas mature leaves are sensitive. After exposure of cucumber (Cucumis sativus L.) plants to SO2 at injurious concentrations, illuminated leaves emit volatile sulfur, which is solely H2S. Young leaves emit H2S many times more rapidly than do mature leaves. Young leaves convert approximately 10% of absorbed [35S]SO2 to emitted [35S]H2S, but mature leaves convert less than 2%. These results suggest that a high capability for the reduction of SO2 to H2S and emission of the H2S is a part of the biochemical basis of the resistance of young leaves to SO2.

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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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