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Science 4 April 1986:
Vol. 232. no. 4746, pp. 105 - 106
DOI: 10.1126/science.232.4746.105
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Articles

Thallphytic Alleopathy: Isolation and Identification of Laetisaric Acid

WILLIAM S. BOWERS 1, HARVEY C. HOCH 2, PHILIP H. EVANS 1, and MASATO KATAYAMA 3

1 Department of Entomology, University of Arizona, Tuscon, AZ 85721.
2 Department of Plant Pathology, New York State Agriculture Experiment Station, Geneva, NY 14456.
3 Faculty of Agriculture, Nagoya University, Nagoya, Japan.

Laetisaria arvalis, a soil-dwelling basidiomycete fungus, secretes an allelopathic agent that induces rapid hyphal lysis in several phytopathogenic fungi. The active compound was isolated from chloroform:methanol extracts of L. arvalis mycelia and characterized as a previously unknown hydroxy fatty acid, (Z,Z-9,12-8-hydroxyoctadecadienoic acid.

Submitted on October 18, 1985
Accepted on January 8, 1986


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