Table 3. Cell surface hydrophobicity of wild type and clp mutants of B. amyloliquefaciens FZB42.

B. amyloliquefaciens FZB42 strain	Actual hydrophobicity value	Hydrophobicity index
wild type	50.98±3.5	100
ΔclpA	24.89±4.4	48.9
ΔclpB	24.29±4.9	47.6
ΔclpC	11.26±4.3	22.1
ΔclpD	17.45±2.6	34.2

The actual hydrophobicity values were calculated based on hexadecane binding, as described in the Methods section. The values (±SD) are representative of three experiments with four replicates. The hydrophobicity index represents the ratio of the actual hydrophobicity value for each strain relative to that of the isogenic wild type strain multiplied by 100.