TABLE 3.
Summary growth characteristics and extracellular metabolites of DapS and DapNS strain pairsa
| Strain | Generation time (min) | OD600b | pHb | Acetateb concn (mM) | Ammoniumb concn (mM) |
|---|---|---|---|---|---|
| 616 | 24 ± 0 | 11.9 ± 0.3 (0.0021) | 7.0 ± 0.0 (0.0002) | 11.1 ± 0.7 (0.0055) | 15.8 ± 0.6 (0.0025) |
| 703 | 25 ± 1 | 9.6 ± 0.1 | 6.5 ± 0.0 | 14.2 ± 0.6 | 11.2 ± 0.3 |
| Q2819 | 25 ± 0 | 11.0 ± 0.4 (0.0096) | 9.6 ± 0.9 (0.0068) | 12.6 ± 0.6 (0.0150) | |
| Q2818 | 26 ± 1 | 9.7 ± 0.3 | 6.5 ± 0.0 | 13.7 ± 0.4 | 10.3 ± 0.2 |
| BOY755 | 25 ± 1 | 10.6 ± 0.3 (0.0095) | 6.7 ± 0.0 (0.0006) | 11.8 ± 0.7 (0.0120) | 12.1 ± 0.4 (0.0204) |
| BOY300 | 26 ± 1 | 9.4 ± 0.3 | 6.4 ± 0.0 | 15.2 ± 0.1 | 9.6 ± 0.9 |
| CB5011 | 25 ± 0 | 10.2 ± 0.8 (0.1120) | 6.9 ± 0.1 (0.0347) | 10.8 ± 1.4 (0.0575) | NDc |
| CB5012 | 26 ± 0 | 8.9 ± 0.2 | 6.5 ± 0.1 | 13.6 ± 0.8 | |
| CB5062 | 26 ± 0 | 9.5 ± 0.6 (0.3721) | 6.1 ± 0.1 (0.2799) | ND | ND |
| CB5063 | 27 ± 0 | 9.1 ± 0.5 | 6.2 ± 0.0 | ||
| CB1663 | 26 ± 0 | 9.7 ± 1.2 (0.3400) | 6.5 ± 0.3 (0.0404) | ND | ND |
| CB1664 | 37 ± 1 | 8.8 ± 0.1 | 5.8 ± 0.1 |
a
Average values of three independent experiments ± the standard deviations are shown.
b
Values were determined after 6 h of growth in TSB under aerobic conditions. The statistical significance (P value) of the difference of the DapS value from that of the corresponding DapNS strain, determined by the Student t test, is shown in parentheses.
c
ND, not determined.