Table 2 Qualitative comparison of the effect of stress on the cell-mineral interactions between energy profiles calculated by the XDLVO theory from values presented in Table 1 and FD curves obtained by AFM using 5 mineral modified probes for each mineral: (a) Increased (green) or decreased (red) mean adhesion pressures (Pad) upon stress, XDLVO based calculated repulsive (red) and attractive (green) forces towards (b) unstressed and (c) stressed cells, XDLVO based calculated energy barriers towards (d) unstressed and (e) stressed cells, (f) absolute shift of the attractive forces (goethite) or repulsive forces (other minerals) of unstressed cells towards more attractive (negative) forces on stressed cells, and (g) agreement ( ), disagreement (i.e., p > 0.1, O), or contradiction ( )) of the response to stress between measured and calculated values. More fields indicate higher effects or size of the respective values and darker colors in (a) indicate p < 0.05, lighter 0.5 < p < 0.1 and no color p > 0.1.

From: Hypertonic stress induced changes of Pseudomonas fluorescens adhesion towards soil minerals studied by AFM