Allelopathic Potential of Plant-Derived Macrocyclic Trichothecenes on Selected Crop Species

Occurrence of macrocyclic trichothecene antibiotics have been reported in the Brazilian higher plant species of Baccharis megapotomica Sprengel (Kupchan et al., 1977) and B. coridifolia A.P. DC (Busam and Habermehl, 1982). Baccharinoids, active antineoplastic agents, were found in B. megapotomica (Kupchan et al., 1977) while roridins A and E and several related derivatives were isolated from B. coridifolia (Habermehl et al., 1985).