Changes in isoperoxidases induced by hydroxyphenylacetic acids |
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| Authors: | Maria C Mato |
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| Institution: | 1. Laboratoire de Physiologie végétale appliquée, Université des Sciences et Techniques du Languedoc, 34060, Montpellier Cedex, France
2. Plant Physiology, Instituto de Investigaciones Agrobiológicas de Galicia, C.S.I.C., Santiago de Compostela, Spain
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| Abstract: | The effects ofo-, m- andp-hydroxyphenylacetic acids on total peroxidase activity and isoperoxidase patterns of wheat coleoptile sections were studied.o-andm-HOPA reduced the total peroxidase activity whilep-HOPA increased it. Electrophoresis in polyacrylamide gel revealed thato- andm-HOPA diminish the intensity of some anodic and cathodic bands, but thatp-HOPA increases anodic and reduces cathodic isoperoxidases. These results may explain the apparently paradoxical positive effects ofp-HOPA on both growth and total peroxidase activity. |
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