Fig 6.

Stereo- and light microscopy observations, showing the distribution of gusA-tagged Agromonas oligotrophica S58 in roots of Oryza sativa cv. Nipponbare 8 days after inoculation. (A and B) Stereomicroscopy image of the lateral root zone left uninoculated (A) and inoculated with gusA-tagged S58 (B). The intense blue coloration on the root surface indicates dense bacterial colonization. (C) Cross section of a root inoculated with gusA-tagged S58, showing the proliferation of bacteria in the intercellular space between epidermal cells observed by bright-field microscopy.