Sterol distribution in arbuscular mycorrhizal fungi
1999
Grandmougin-Ferjani, A. | Dalpe, Y. | Hartmenn, M.A. | Hartmann, M.A. | Laruelle, F. | Sancholle, M.
The sterol composition of spores from 16 species of arbuscular mycorrhizal fungi belonging to the order Glomales were examined by GC-MS. The major compound was found to be 24-ethylcholesterol (up to 85%) followed by cholesterol (up to 15%). Several other sterols such as 24-methylcholesterol, delta 5-avenasterol and 24-ethylcholesta-5,22-dien-3 beta-ol were also detected. Significant amounts of alpha-amyrin, a common vascular plant triterpene, were present in the spores of all the fungal species analyzed. The absence of ergosterol, a classical fungal sterol, is discussed in relation to fungal evolution.
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