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Scanning electron micrographs of wheat spike colonization by F. graminearum. (A) Hyphal network on the inner surface of the lemma in wild-type Fielder (WT) 3 days after inoculation (dai), with a partial enlargement of the right side (red box). (B) Hyphal network in the TaUGT-779 at 3 dai. (C) Hyphal network in the TaUGT-790 at 3dai. Bars = 100 μm in the left, and 10 μm in the right.
