TABLE 4.
Activities of extracellular enzymes and production of EPS in the flhA and flhB mutants, their complementary strains, and Xc17
| Strain | Mean diameter (cm) of digestive zone ± SD for extracellular enzymea
|
Mean EPS production (μg/ml) ± SD in medium
|
||||
|---|---|---|---|---|---|---|
| Amylase | Celluloses | Pectinase | Protease | LB | XOLN | |
| Xc17 | 2.21 ± 0.59 (100) | 1.84 ± 0.27 (100) | 0.85 ± 0.01 (100) | 1.62 ± 0.08 (100) | 252 ± 51 | 2,914 ± 24 |
| XcflhA | 2.17 ± 0.61 (98) | 1.76 ± 0.31 (95) | 0.77 ± 0.11 (91) | 1.80 ± 0.08 (110) | 230 ± 7 | 2,968 ± 34 |
| XcflhA(c) | 2.17 ± 0.57 (98) | 1.70 ± 0.31 (92) | 0.76 ± 0.15 (89) | 1.72 ± 0.13 (106) | 233 ± 36 | 3,110 ± 48 |
| XcflhB | 2.16 ± 0.62 (98) | 1.74 ± 0.33 (94) | 0.83 ± 0.13 (97) | 1.74 ± 0.08 (107) | 255 ± 15 | 2,480 ± 75 |
| XcflhB(c) | 2.15 ± 0.64 (97) | 1.74 ± 0.33 (94) | 0.84 ± 0.12 (99) | 1.64 ± 0.02 (101) | 195 ± 8 | 2,597 ± 51 |
a
Diameters of clearing zones were measured in plates containing the appropriate substrate. Values in parentheses are percent diameter for the mutant strains relative to that for Xc17.