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. 1982 Aug;70(2):544–546. doi: 10.1104/pp.70.2.544

Ornithine Decarboxylase and Arginine Decarboxylase Activities in Meristematic Tissues of Tomato and Potato Plants

Ephraim Cohen 1,2,1, Yair M Heimer 1,2, Yosef Mizrahi 1,2,2
PMCID: PMC1067185  PMID: 16662531

Abstract

Ornithine decarboxylase and arginine decarboxylase activities were measured in roots and buds of tomato (Lycopersicon esculentum Mill. cv. Pearson ms-35) and potato (Solanum tuberosum cv. Desire) plants. In both tomato and potato, the activity of ornithine decarboxylase was the highest at the root tip, decreasing proximally. The same was true for potato buds. In vegetative buds of tomato, the highest activity was found in the youngest leaves. The older the leaf, the lower was orithine decarboxylase activity. Arginine decarboxylase, on the other hand, did not display a similar gradient. These findings are in accordance with the suggestion that in tomato and potato elevated ornithine decarboxylase activity is associated with intense mitotic activity.

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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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