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Mycologia, 96(1), 2004, pp. 23-25.
© 2004 by The Mycological Society of America

Clitolactone: a banana slug antifeedant from Clitocybe flaccida


William F. Wood 1
Thomas J. Clark
Debra E. Bradshaw
Brian D. Foy

     Department of Chemistry, Humboldt State University, Arcata, California 95521

David L. Largent
Bradley L. Thompson

     Department of Biological Sciences, Humboldt State University, Arcata, California 95521

Clitolactone, 5-(chloromethyl)-3-methyl-2(5H)-furanone, was isolated from sporocaps of the mushroom Clitocybe flaccida. The structure was determined by HRMS, EIMS, 1H & 13C NMR, 2D 1H-13C COSY and 1H-1H COSY. This mushroom is not eaten by the banana slug Ariolimax columbianus (Gould), a mycophagist from the temperate rain forests of the Pacific Northwest. Clitolactone acts as an antifeedant because these slugs rejected 1.0 cm2 pieces of lettuce treated with 25 µg of clitolactone.

Key words: Ariolimax columbianus, Basidiomycetes, chlorinated natural product, lactone, slug, sporocarp






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Copyright © 2004 by The Mycological Society of America.