Fig. 2
From: Effect of Rhizobium mechanisms in improving tolerance to saline stress in lettuce plants
Fluorescence optical micrographs of lettuce seedling roots inoculated with GPTR29 green fluorescent protein (GFP)-tagged strain contrast stained with propidium iodide (red) seven days post-inoculation, under non-saline (0 mM NaCl) (A and B) and saline (100 mM NaCl) (C and D) conditions: A shows the ability of GPTR29 to colonize lateral root primordia (bar 100 µm); B shows the biofilm formation of GPTR29 (bar 100 µm); C and D also show the biofilm structures (bar 100 µm)