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Plant Physiology 45:461-464 (1970)
© 1970 American Society of Plant Biologists

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Articles

Increase in Indoleacetic Acid Oxidase Activity of Winter Wheat by Cold Treatment and Gibberellic Acid 1

Reginald J. Bolduc, Joe H. Cherry and Byron O. Blair

a Agronomy and Horticulture Departments, Purdue University, Lafayette, Indiana 47907

The activity of indoleacetic acid oxidase increased 10-fold during 40 days of cold treatment of winter wheat seedlings. Puromycin and 6-methyl purine inhibited indoleacetic acid oxidase development in the cold. Addition of gibberellic acid stimulated indoleacetic acid oxidase development during germination at room temperature and during cold treatment. Amo-1618 inhibited indoleacetic acid oxidase development before and during cold treatment. Indoleacetic acid treatment increased indoleacetic acid oxidase activity during germination at room temperature while no significant effect on activity was observed during cold treatment.

1 Journal Paper 3693 of the Purdue Agricultural Experiment Station. The research was supported in part by research grants to J. H. C. from the National Science Foundation (GB-4593) and United States Department of Agriculture (616-15-3). Graduate research of R. J. B. was supported by a scholarship from CRAQ, Province of Quebec, Canada.




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Copyright © 1970 by the American Society of Plant Biologists