TABLE 1.
Effect of different ESs on cell growth of S. oneidensis MR-1.
| Electron shuttles (ESs)b | Relative growth abilitya | ||||
|---|---|---|---|---|---|
| 0.001 mM | 0.01 mM | 0.05 mM | 0.1 mM | 0.5 mM | |
| NR | 96.1 ± 1.7 | 86.5 ± 1.0 | 64.6 ± 0.5 | 53.8 ± 2.4 | 0 |
| MV | 102.2 ± 0.5 | 102.1 ± 2.7 | 94.8 ± 1.0 | 85.7 ± 1.4 | 36.7 ± 1.8 |
| PH | 101.3 ± 2.8 | 99.6 ± 2.1 | 97.7 ± 0.5 | 97.3 ± 3.9 | 91.8 ± 0.7 |
| DCPIP | 100.7 ± 0.4 | 101.4 ± 2.4 | 84.5 ± 2.9 | 63.5 ± 1.8 | 0 |
| LV | 65.6 ± 1.4 | 54.3 ± 4.2 | 21.3 ± 2.5 | 15.1 ± 6.3 | 0 |
| TTC | 95.3 ± 1.2 | 98.3 ± 3.1 | 96.1 ± 2.8 | 97.1 ± 1.0 | 83.6 ± 1.6 |
| AR | 100.0 ± 1.1 | 95.2 ± 4.5 | 92.2 ± 1.1 | 85.6 ± 2.6 | 15.4 ± 3.8 |
| RF | 93.8 ± 1.4 | 82.9 ± 4.2 | 71.5 ± 4.0 | 60.0 ± 2.8 | 45.2 ± 3.7 |
| HA | 100.8 ± 1.1 | 98.6 ± 4.2 | 100.1 ± 3.1 | 99.7 ± 3.0 | 96.9 ± 4.5 |
| BV | 101.9 ± 1.6 | 98.7 ± 4.9 | 95.1 ± 4.6 | 84.2 ± 2.7 | 38.4 ± 1.6 |
| DTBBQ | 94.1 ± 3.8 | 95.4 ± 1.8 | 92.1 ± 2.2 | 94.2 ± 2.2 | 66.6 ± 1.4 |
| AQS | 96.7 ± 4.1 | 105.5 ± 0.5 | 98.9 ± 0.6 | 102.2 ± 0.3 | 99.3 ± 1.8 |
| PMS | 102.6 ± 4.8 | 75.6 ± 2.4 | 3.8 ± 0.2 | 2.2 ± 0.2 | 0 |
| MB | 90.6 ± 2.5 | 87.9 ± 2.8 | 55.6 ± 5.9 | 55.7 ± 8.5 | 7.6 ± 0.3 |
a
The relative growth ability was shown as percentage of cells at different concentrations of ESs compared to the untreated control, and the growth ability of S. oneidensis MR-1 cells without ESs was defined as 100%.
b
Neutral red (NR), methyl viologen (MV), potassium hexacyanoferrate (PH), 2,6-dichlorophenolindophenol sodium salt hydrate (DCPIP), thionin acetate salt (LV), 2,3,5-triphenyltetrazoliun chloride (TTC), alizarin red (AR), riboflavin (RF), humic acid (HA), benzyl viologen dichloride (BV), 2,6-di-tert-butyl-1,4-benzo-quinone (DTBBQ), anthraquinone-2-sulfonate (AQS), phenazine methosulfate (PMS), methylene blue (MB).