Figure 1.

Imaging of P. aphidis proliferation on infected cucumber cotyledons. Fluorescence microscopy analysis of cucumber cotyledons treated with GFP-tagged P. aphidis (A) followed by successive inoculation (3 days after P. aphidis treatment) with P. xanthii (B) or treated with water and inoculated with P. xanthii (C). Images were recorded 5 days after inoculation P. xanthii. Shown are representative pictures taken of one cotyledon out of 5 from each treatment in one representative experiment. The entire experiment was performed three times with similar results.