Figure 1.
Haustorial cell structures formed upon infection of various plants or induced by DMBQ. The upper photos show the longitudinal sections of P. japonicum haustoria after infection of susceptible plants (Arabidopsis thaliana (A) and Oryza sativa (B)) and a resistant plant (Lotus japonicus (C)) or induction by DMBQ treatment (D). The lower drawings show the cell outlines of the upper sections. The colors denote cell types. Red, blue, yellow, purple, and gray indicate intrusive cells, small (procambium-like) cells, large cells, lignin accumulation, and host root cells, respectively. Stripes mark the location of xylem cells. Bars = 100 µm.