Fig. 3. Expression of HbMlo1 during powdery mildew infection. (A) Expression of HbMlo1 in the leaves of seedlings exhibiting different levels of powdery mildew symptoms.
(B) The symptoms of seedlings used for expression analysis. 0, leaf with no pathogen infection; 1, leaf with a few scattered allergy spots; 2, leaf with sporadic lesions; 3, more
than one third of the leaf area was covered with lesions; 4, the whole leaf was covered with disease spots, and leaf was discoloration and curling.