Virulence test of GRS447 on Arabidopsis and tomato. (A) Progression of the average wilting symptoms on Arabidopsis Col-0 plants over 11 days; filled squares, wild-type strain GMI1000; filled triangles, GRS447. IGCs are represented as a mean and standard error calculated on three data points, at days 4, 6, and 9; open squares, GMI1000; open triangles, GRS447. (B) Plant-wilting phenotype of Arabidopsis 6 days after inoculation; GMI1000-inoculated (Upper) and GRS447-inoculated (Lower) plants. (C) Progression of the average wilting symptoms on tomato (cultivar Super Marmande) over a 12-day period, symbols as in A. (D) Tomato wilting at day 5 after inoculation; GMI1000-inoculated (Upper) and GRS447-inoculated (Lower) plants.