Insecticidal properties of Lactarius fuliginosus and Lactarius fumosus
1990
Dowd, Patrick F. | Miller, Orson K.
Acetone and ether: acetone extracts of the mushrooms Lactarius fuliginosus (Fr. ex Fr.) Fr., L. fumosus fumosus Peck and L. fumosus. fumosoides (Smith and Hesler) Smith and Hesler were toxic to the corn earworm, Heliothis zea (L.), while water extracts were inactive. Ether: acetone extracts of L. fuliginosus and L. fumosus fumosus were toxic to the large milkweed bug, Oncopeltus fasciatus (L.), and in some cases caused precocious development. Profiles of compounds separated chromatographic ally and visualized with chromene reagents, literature reports of chromenes from L. fuliginosus, and known insecticidal/anti-hormone effects of chromenes suggest that chromenes may be responsible for the activity of some of the extracts.
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