This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in Web of Science Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via CrossRef Citing Articles via Web of Science (3) Citing Articles via Google Scholar Google Scholar Articles by Adams, W. R. Articles by Galston, A. W. Search for Related Content PubMed PubMed Citation Articles by Adams, W. R., Jr. Articles by Galston, A. W. Agricola Articles by Adams, W. R. Articles by Galston, A. W.

Articles

Differential Effects of Ethylene on Pith Peroxidase of Intact Tobacco Plants and Excised Tissue ¹

^a Department of Biology, Yale University, New Haven, Connecticut 06520

Ethylene increases the pith peroxidase activity of intact tobacco plants (Nicotiana tabacum) but not of excised pith, either at atmospheric or reduced pressures. In the intact plant, the increased activity involves augmentation of the two constitutive anodic isoperoxidases. In the excised pith, ethylene strongly represses one injury-induced isoperoxidase, while not markedly affecting other isozymes known to be repressed by auxin. Thus, the previously described auxin-induced repression of peroxidase is not due mainly to auxin-induced ethylene formation.