Figure 7.

Callose accumulation in atrbohD and pmr4 plants. Arabidopsis wild-type and atrbohD (A) or pmr4 (B) leaves were infiltrated with water (control, left) or OGs (right) for 24 h and stained with aniline blue for callose visualization. The number below each image indicates the average number of callose deposits ± se of eight different leaf samples from at least five independent plants (three microscopic fields of 0.1 mm² for each leaf). Images show representative leaves for each treatment. All images are at the same scale; scale bar = 1 mm (10× magnification). This experiment was repeated twice with similar results.