FIG. 2.

FB₁ production by the wild type and FT536. (A) FB₁ was assayed by TLC after 7 days of growth on cracked-corn medium. Lane 1, FB₁ standard (1 μg); lanes 2 and 3, wild type; lanes 4 and 5, FT536. (B and C) FB₁ from the wild type (B) and FT536 (C) was analyzed by HPLC after 7 days of growth on cracked-corn medium. (D and E) FB₁ production by the wild type (♦) and FT536 (▪) was measured by HPLC after 7, 14, and 21 days of growth on cracked-corn medium (D) and DL medium (E). Results are means and standard errors from three replicates.