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Secondary haustoria on T. versicolor roots. Haustoria were induced by a fraction (the 30-min eluant from Fig. 7B) of the purified methanolic rinse of maize seeds (0.04 g seed equivalents/mL) (A), by 10 μm peonidin (B), or by 50 μm DMBQ (C). Photographs were taken approximately 24 h after treatment. Scale bars = 100 μm.
