Effect of a Brief CO2 Exposure on Ethylene Production

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Abstract
Ethylene production and respiration by ''Granny Smith'' apples were inhibited by treatment with 20% CO2 for 2. A similar effect was observed in tissue slices when treated at either 0.degree. or 25.degree. C. The inhibition continued even after an extended aeration period. There is also an inhibition of ethylene emission in tissue slices incubated with exogenous 1-aminocyclopropane-1-carboxylic acid (ACC). CO2 treatment increased the ACC content of the tissue. The action of CO2 is apparently directed toward the enzyme system responsible for the conversion of ACC into ethylene.