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Plant Physiology 73:185-187 (1983)
© 1983 American Society of Plant Biologists

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Articles

Ozone-Induced Reduction in Quantity of Ribulose-1,5-bisphosphate Carboxylase in Alfalfa Foliage 1

Eva J. Pell and N. S. Pearson

Department of Plant Pathology and Center for Air Environment Studies, The Pennsylvania State University, University Park, Pennsylvania 16802

The concentration of ribulose-1,5-bisphosphate carboxylase was measured in the foliage of `Moapa 69,' `Ladak,' and `Vernal' cultivars of alfalfa (Medicago sativa L.) after plants were exposed to 0.25 or 0.30 microliters per liter ozone for 2 hours. The quantity of ribulose-1,5-bisphosphate carboxylase decreased 80%, 68%, and 36% in leaves which did not exhibit ozone symptoms and to undetectable levels, 99% and 79% in symptomatic foliage for each cultivar, respectively.

1 Supported in part by Department of Energy Contract DE-AS02-77 EVO 4331.M006. Contribution No. 1381, Department of Plant Pathology, the Pennsylvania Agricultural Experiment Station Journal Series No. 6599. Contribution No. 670-83 of the Center for Air Environment Studies. Department of Energy No. C0014331-10.




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Copyright © 1983 by the American Society of Plant Biologists