Phytotoxicity of Macrocyclic Trichothecenes Toward Baccharis Cell Lines

Cell lines from four Baccharis plant species have been grown in cell suspensions and tested, by two different bioassays, for their sensitivities toward the macrocyclic trichothecenes roridins A and E and baccharinoid B4. The two Brazilian species which were shown to contain macrocyclic trichothecenes were considerably less sensitive to these toxins than were the non-trichothecene-containing North American Baccharis species.