| Autor: |
H. Clijsters, M. Kubacka-Zebalska, J. Weckx, J. Vangronsveld |
| Rok vydání: |
1993 |
| Předmět: |
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| Zdroj: |
Cellular and Molecular Aspects of the Plant Hormone Ethylene ISBN: 9789048142491 |
| DOI: |
10.1007/978-94-017-1003-9_53 |
| Popis: |
The potential involvement of ethylene in the metal induced effects on membranes and enzymes was evaluated. Exogenous ethylene increased membrane permeability and the capacity of several enzymes. Kinetical comparison of the responses of ethylene production, membrane permeability, membrane degradation products and enzyme capacities on toxic metal concentrations delivered arguments against a mediator role of ethylene. After addition of a toxic zinc concentration to intact dwarf bean (Phaseolus vulgaris L. cv. Limburgse vroege) seedlings, the increase in ethylene production was preceeded by several of the other responses. Additional arguments against a mediator role of ethylene in these responses was provided by the effects of exogenous ethylene on the isoperoxidase patterns. Ethylene treatment intensified the staining of the isoperoxidases present in both control and metal treated plants, but was not able to induce metal specific Dl and D2 isozymes when no metals were supplied. Obviously, ethylene has a consolidating effect on the responses, but is not the triggering factor. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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