TABLE 3.
Influence of lon and rpoS on transcription of the Plt biosynthesis gene pltB, assessed with an ice nucleation reporter gene in Tn3-nice
| Strain | Relevant characteristicsa | Ice nucleation activity [log10 (ice nuclei per cell)] ± SD |
|---|---|---|
| JL4389 | lon+rpoS+ | −1.7 ± 0.6 |
| JL4594 | lon::aacC1 rpoS+ | −0.39 ± 0.1 |
| JL4600 | lon+rpoS::lacZ | −0.67 ± 0.1 |
| JL4621 | lon::aacC1 rpoS::lacZ | 0.17 ± 0.3 |
| JL4601 | lon+rpoS++ | −3.1 ± 0.4 |
a
rpoS++ designates the presence of both a genomic copy of rpoS and pJEL5649, a plasmid containing the cloned rpoS from Pf-5.