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Morphological differences were observed between strains Fg-4-2 infected by FgV1-SD4 and Fg-4-1 that was cured of FgV1-SD4. FgV1-SD4 was detected by RT-PCR in strain Fg-4-2 but not in strain Fg-4-1. (A) Comparison of growth of Fg-4-1 (left) vs. Fg-4-2 (right) on PDA plates 5 days; (B) gel image confirming the detection of FgV1 viral genome in Fg-4-2 isolate of F. graminearum. (C) Amplification of the whole viral genome of FgV1 from cDNA.
