Table 2.
Mean maximum AI-2 activity in Shewanella type strains and isolate DT-1. The peak of AI-2 activity (in % of positive controls) during one complete growth curve is averaged for the indicated number of bioassays. Mean ± standard deviation are given. Strain DT-1 was isolated from the surface of the diatom Thalassiosira sp. that was picked from a plankton sample (170 μm net) collected near the island of Helgoland in the North Sea on 4th April 2002 (depth 0.5 – 1.5 m).
| Strain | Species | Peak A1-2 activity [% pos. contr.] | no of bio-assays |
| CCUG 30811T | Alishewanella fetalis | 24 ± 251) | 8 |
| DSM 9167T | Shewanella algae | 9.1 ± 10 | 13 |
| LMG 20552T | Shewanella fidelis | 18 ± 6 | 8 |
| LMG 18921T | Shewanella frigidimarina | 7.5 ± 6 | 6 |
| LMG 19691T | Shewanella japonica | 46.2 ± 33 | 4 |
| LMG 21403T | Shewanella marinintestina | 3.8 ± 3 | 10 |
| ATCC 700500T | Shewanella oneidensis MR-1 | 9.8 ± 9 | 10 |
| LMG 21408T | Shewanella sairae | 34 ± 38 | 5 |
| LMG 21406T | Shewanella schlegeliana | 5.8 ± 5 | 5 |
| DT-12) | Shewanella hafniensis | 4.3 ± 1 | 4 |