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Fatty acid and sterol composition of ungerminated spores of the vesicular‐arbuscular mycorrhizal fungus, Acaulospora laevis
Author(s) -
Beilby J. P.
Publication year - 1980
Publication title -
lipids
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.601
H-Index - 120
eISSN - 1558-9307
pISSN - 0024-4201
DOI - 10.1007/bf02534420
Subject(s) - biology , spore , sterol , polyunsaturated fatty acid , fungus , botany , fatty acid , biochemistry , cholesterol
The fatty acids and sterols of ungerminated chlamydospores of the vesicular‐arbuscular (VA) endophyte Acaulospora laevis were examined by gas chromatography and mass spectrometry. The total lipid content of the spores was 45.5% of the spore dry weight. Predominant fatty acids were palmitoleic (52.5%), palmitic (25.5%) and oleic (7.4%). Minor fatty acids consisted of a range of (n−3) and (n−6) polyunsaturated acids. The occurrence of (n−3) polyunsaturated fatty acids is rare in fungi of the order Mucorales. Three sterols were identified as 24‐ethylcholesterol (79.9%), cholesterol (11.0%) and 24‐methylcholesterol (9.2%). No ergosterol was detected. Lipids of the chlamydospores of A. laevis are compared with those of Glomus caledonius .