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Time course of growth and siderophore production by P. syringae pv. tomato DC3000 and the pchA mutant under low-iron conditions. (A) Pvd and Ybt levels in culture supernatants of P. syringae pv. tomato DC3000. (B) Growth curve for P. syringae pv. tomato DC3000 and the pchA mutant. (C) Pvd levels in culture supernatants of DC3000 or the pchA mutant. Low-iron conditions are equivalent to no added dipyridyl or added FeCl3.
