Fig 5. Colonization of the roots of (a–d) C. oleifera and (e–h) A. thaliana by B. subtilis strain 1-L-29gfp^r (300 × magnification).

Colonization after (a) 0 h; (b, e, f) 24 h; (c) 48 h; and (d, g, h) 72 h is indicated by green fluorescence. Scale bars = 50 μm.