Table I.
Growth of group 2 σ factor inactivation strains under different environmental conditions
Growth is compared with the growth of the control strain under the same conditions. +++, Similar growth as in the control strain; ++(+), slightly slower growth; ++, slower growth; +, only very slow growth; +/−, slow growth for a short time; −, no growth; ND, not determined.
| Growth Conditions | Inactivated sig Gene
|
Reference | |||
|---|---|---|---|---|---|
| sigB | sigC | sigD | sigE | ||
| Standard | +++ | +++ | +++ | +++ | This study |
| High CO2 | +++ | +++ | +++ | +++ | This study |
| Heat | ++(+) | +/− | ++(+) | ND | Tuominen et al. (2006, 2008) |
| Salt stress | +/− | + | ++(+) | + | This study |
| Sorbitol | +/− | ++ | ++ | ++(+) | This study |
| High light | +++ | +++ | + | +++ | This study |
| Light-activated heterotrophic growth | ND | ND | ND | − | Osanai et al. (2005) |
| Mixotrophic growth, 8 h of light/16 h of dark | +++ | ND | +++ | + | Summerfield and Sherman (2007) |