Nδ-Acetylornithine Effects on P. syringae.
(A) Nδ-acetylornithine accumulation in wild-type Col-0 4 d after treatment with coronatine, coronatine-producing and nonproducing (Cor-) P. syringae strains Psm4326 and DC3000, and DC3000 carrying the avirulence genes avrRpt2 and avrRpm1. Mean ± se of n = 5, *P < 0.05, t test relative to control.
(B) Growth of P. syringae DC3000 in minimal maltose medium with 2 g L−1 of a single amino acid as the nitrogen source. Mean ± se of n = 3.
(C) Growth of P. syringae in minimal maltose medium with 0, 10, 100, 250, or 500 μM Nδ-acetylornithine and 2 g L−1 Glu as the nitrogen source. Mean ± se of n = 3.
(D) Growth of P. syringae DC3000 infiltrated into Col-0 wild-type and nata1-1 mutant leaves. CFU, colony-forming units. Numbers in bars indicate sample sizes ± se. **P < 0.01, t test.