Figure 3. Expression of eight defense-related (PR) genes in soybean roots.
LP: 15 µM P; HP: 500 µM P. Soybean roots were inoculated with C. parasiticum (see Materials and Methods for details). Solid barrier: eliminate root interactions and exudates movement between the roots of the two plant species; mesh barrier: prevent root intermingling of two species while permitting root exudates exchange; no barrier: allow roots and exudates to completely interact. Each bar represents the mean of three replicates ± SE.