Table 3.
Growth characteristics of C. glutamicum mutant strains on different inorganic sulphur sources at 2 mM concentration in liquid medium
| generation timea [h] | lag timea [h] | |||||||||
| sulphur source | WT | CR018 (ΔcysZ) | CR019 (ΔcysY) | CR023 (ΔcysX) | CR025 (Δfpr2) | WT | CR018 (ΔcysZ) | CR019 (ΔcysY) | CR023 (ΔcysX) | CR025 (Δfpr2) |
| sulphate | 2.1 | ndb,c | nd | 6.2 | 2.2 | 8.0 | nd | nd | 23.5 | 11.0 |
| sulphite | 2.2 | nd | nd | 4.2 | 2.1 | 8.0 | nd | nd | 16.0 | 11.0 |
| thiosulphate | 3.2 | 3.2 | nd | 9.5 | 2.9 | 9.5 | 14.0 | nd | 37.5 | 10.5 |
| sulphide | 3.8 | 3.8 | 17.6 | 7.4 | 3.2 | 15.0 | 13.5 | 16.5 | 23.5 | 15.5 |
a averages, calculated from 18 measurements (3 independent cultivations, 6 replicates per cultivation)
b significant changes are given in bold script
c nd = not determined due to lack of growth