Fig. 2From: Biological control of Podosphaera xanthii the causal agent of squash powdery mildew disease by upregulation of defense-related enzymesLight microscopy and scanning electron microscopy (SEM) of P. xanthii on squash leaves. The growth characters of powdery mildew fungi in the control (a): leaves infected only with P. xanthii and after 24Â h of treatment with B. subtilis (b) and T. harzianum (c)Back to article page