Table 1.
Comparative properties of strain APT3T and its closest (halo)alkaliphilic relatives from the Desulfobacteraceae (Brandt and Ingvorsen 1997; Kjeldsen et al. 2010; Sorokin et al. 2012a); nd, not determined
| Property | APT3 | Desulfonatronobacter acidivorans | Desulfosalsimonas propionicica | Desulfobacter halotolerans |
|---|---|---|---|---|
| Cell morphology | Rods | Short rods | Rods | Rods |
| Motility | − | + | + | + |
| Dominant PLFA | 18:1ω7, 16:0, i14:0 | 18:1ω7, 16:0, 16:1ω7 | nd | nd |
| Dominant respiratory lipoquionone | MK-9 | MK-8 | nd | nd |
| Identified membrane polar lipids | Phosphatidylglycerol, diphosphatidylglycerol phosphatidylethanolamine, phosphatidylcholine | nd | nd | |
| Acetate as e-donor | + (with thiosulfate and sulfite) | − | − | + (with sulfate) |
| Other e-donors | C3–C9 VFA, pyruvate, lactate, i-butyrate, EtOH, BuOH, i-BuOH | C3–C8 VFA | H2, propionate, butyrate, i-butyrate, fumarate, lactate, EtOH, PrOH, BuOH | EtOH |
| Electron acceptors | Sulfate, sulfite, thiosulfate | Sulfate, thiosulfate | Sulfate, sulfite, thiosulfate | Sulfate, sulfite, thiosulfate |
| Salt range (optimum), M Na+ | 0.3–4.0 (1.0) | 0.2–1.5 (0.6) | 0.1–3.4 (1.0) | 0.1–2.0 (0.2–0.3) |
| pH range (optimum) | 8.0–10.1 (9.5) | 8.5–10.6 (10.0) | 6.0–8.3 (7.0) | 6.2–8.1 (6.2–7.4) |
| G + C, mol % | 53.5 | 54.4 | 54.1 | 49.0 |
| Habitat | Soda lakes | Great Salt Lake | ||