Expression of ACT and DTX18 Leads to Extracellular Accumulation of HCAAs in P. infestans-Infected Potato Leaves.
HCAA levels were determined in leaves (A) and in the inoculum (B) 24 h after infection of leaves of control (wild-type and empty vector-carrying plants) or 35S-ACT-35S-DTX18-expressing plants (lines D, K, N, and X). Data are derived from three independent experiments ([A]: n ≥ 44; [B]: n ≥ 36, except for feruloyltyramine and caffeoylputrescine, n ≥ 24). Significance analysis of differences was performed by t test, *P < 0.05, **P < 0.01, ***P < 0.001.