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Appl Environ Microbiol. 1989 April; 55(4): 794-797

Biosynthesis of fusarochromanone and its monoacetyl derivative by Fusarium equiseti.

Department of Plant Pathology, University of Minnesota, St. Paul 55108.

ABSTRACT

One fluorescent compound previously named TDP-2 was isolated and purified from a rice culture of Fusarium equiseti (Alaska 2-2). Mass spectral and nuclear magnetic resonance data indicated that it is a C-3'-N-acetyl derivative of fusarochromanone, a newly discovered mycotoxin. Time course studies of synthesis of these two compounds on autoclaved rice and Czapek-Dox medium enriched with soybean peptone indicated that fusarochromanone was converted to TDP-2 in the cultures. A high concentration of peptone in the liquid medium may stimulate both fusarochromanone synthesis and its conversion to TDP-2.