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Effects of aluminum on membrane fluidity of the mycorrhizal fungus Amanita muscaria
Author(s) -
žel Jana,
Svetek Jelka,
Črne Helena,
Schara Milan
Publication year - 1993
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1993.tb01801.x
Subject(s) - lactarius , membrane , amanita , mycelium , membrane fluidity , membrane lipids , biophysics , biology , fungus , membrane potential , chemistry , biochemistry , botany
The effect of aluminum on the ordering and dynamics of lipid molecules in plasmalemma was studied by electron paramagnetic resonance via the membrane‐inserted reporter spin label molecules (methyl ester of 5‐doxyl‐hexadecanoic acid) in situ in mycelia of the ectomycorrhizal fungus Amanita muscaria . It was found, first, that the plasmalemma is structured into coexistent regions of lipids with different ordering and dynamics, and second, that aluminum stress is accompanied by the corresponding relative decrease of the proportion of the less ordered membrane domains. This effect is opposite to that found previously for Lactarius piperatus , where the membrane responded by an increase of the portion of the less ordered membrane domains. Such qualitatively diverse effects of aluminum at the membrane level is of interest as it coincides with the opposite effect on growth, i. e. inhibition of Amanita muscaria and stimulation of Lactarius piperatus .