Table 1.
Growth parameters of batch and continuous cultures of Prochlorococcus marinus PCC9511 grown under a 12 h/12 h light/dark cycle under HL supplemented or not with UV radiations.
| Batch Cultures | Continuous Cultures | |||
|---|---|---|---|---|
| Growth parameters* | HL | HL+UV | HL | HL+UV |
| μcc (d-1) | 0.67 ± 0.05 | 0.68 ± 0.03 | 0.69 ± 0.09 | 0.66 ± 0.04 |
| μnb (d-1) | 0.60 ± 0.13 | 0.62 ± 0.11 | n.a. | n.a. |
| TG1 (h) | 16.8 ± 1.6 | 18.4 ± 0.8 | 17.8 ± 2.5 | 19.0 ± 1.5 |
| TS (h) | 4.03 ± 0.30 | 3.47 ± 0.28 | 3.71 ± 0.77 | 3.83 ± 0.49 |
| TG2 (h) | 3.97 ± 0.30 | 2.53 ± 0.28 | 2.95 ± 0.31 | 2.51 ± 0.60 |
| Sr | 32.4 ± 2.2 | 24.6 ± 1.1 | 27.2 ± 1.2 | 25.0 ± 1.4 |
Values are averages (± SD) of three consecutive days and two biological replicates
* Growth rates per day calculated from: cell cycle data (μcc) or cell numbers (μnb); TG1, TS, TG2: cell cycle phase duration in hours; Sr: rate of synchronization estimated from the ratio (TS+TG2)/(TG1+TS+TG2)
n.a.: not applicable