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O. neolycopersici growing on Arabidopsis Col-0 at four days after inoculation.
Notice the lobate appressoria (arrowheads) that form at regular intervals along the secondary hyphae. The disease index on Col-0 is usually 2.6 (approximately 30% leaf coverage at 15 days post-inoculation; Bai et al., 2008). Scale bar: 10 μm (inset), 100 μm (large picture).
