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(A) Lateral bud of perennial ryegrass infected with Epichloë festucae wild type (WT), cdc42 mutant (Δcdc42) and racA mutant (ΔracA) expressing GFP. Bars = 100 μm. (B) cdc42 mutant can systemically infect young tillers of perennial ryegrass. Bars = 50 μm.
