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Influence of aluminum on the membranes of mycorrhizal fungi |
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| Authors: | Jana ?el Milan Schara Jelka Svetek Marjana Nemec Nada Gogala |
| Institution: | 1. Institute of Biology, University of Ljubljana, Karlov?ka 19, 6100, Ljubljana, Slovenia 2. J. Stefan Institute, University of Ljubljana, 61111, pp 100, Ljubljana, Slovenia 3. Department of Biology, Biotechnical Faculty, University of Ljubljana, A?ker?eva 12, 61000, Ljubljana, Slovenia |
| Abstract: | The influence of Al3+ on the membrane fluidity of the mycorrhizal fungus Lactarius piperatus (L.ex.Fr.) S. F. Gray was studied. When mycelia grew on media supplemented with 1 or 10 mM aluminum for 21 days, a significant increase in fluidity was detected, compared with the corresponding controls. The comparisons of the EPR spectra calculated by a model, with the experimental ones showed that the spectra are superimpositions of two components with different membrane ordering. The action of aluminum induced a relative enlargement of the less immobilized portion in the membrane. No significant alterations of fluidity were measured after 30-minute treatment, with Al3+. |
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