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Fatty acid and sterol composition of ungerminated spores of the vesicular-arbuscular mycorrhizal fungus,Acaulospora laevis

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Lipids

Abstract

The fatty acids and sterols of ungerminated chlamydospores of the vesicular-arbuscular (VA) endophyteAcaulospora 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 ofA. laevis are compared with those ofGlomus caledonius.

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Authors and Affiliations

  1. Department of Soil Science and Plant Nutrition, University of Western Australia, 6009, Nedlands, Western Australia

    J. P. Beilby

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  1. J. P. Beilby
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Beilby, J.P. Fatty acid and sterol composition of ungerminated spores of the vesicular-arbuscular mycorrhizal fungus,Acaulospora laevis . Lipids 15, 949–952 (1980). https://doi.org/10.1007/BF02534420

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  • DOI: https://doi.org/10.1007/BF02534420

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