Table 1.
Differential characteristics of strain AT3 compared to its closest species
| Properties | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
|---|---|---|---|---|---|---|---|---|
| Cells size (μm) | 0.3/2.9 | 0.5/2–5 | 0.3–0.4/2.0–14.5 | 1.6/0.4 | 0.2–0.4/4.0–8.0 | 0.8/0.9 | 0.9/1.3 | |
| Gram stain | — | + | _ | _ | — | + | + | + |
| Motility | — | — | _ | _ | — | + | — | — |
| Spore forming | — | — | — | _ | + | — | — | — |
| Aesculin hydrolysis | + | — | _ | + | + | + | — | + |
| Gelatine hydrolysis | + | — | _ | — | w | + | — | |
| Urease | — | — | — | — | — | — | NA | — |
| Indole | + | + | — | — | — | + | — | — |
| Catalase | + | — | — | — | — | — | — | — |
| Acid from: | ||||||||
| Arabinose | — | — | + | _ | — | + | + | — |
| Cellobiose | — | + | — | — | — | + | + | + |
| Glucose | + | + | + | + | — | + | — | — |
| Lactose | — | — | + | — | — | — | + | — |
| Maltose | v | + | NA | v | — | + | — | — |
| Mannose | v | + | + | — | — | — | — | — |
| Rafinose | — | — | + | _ | — | + | — | — |
| Sucrose | — | — | + | v | NA | + | — | — |
| Salicin | — | — | _ | v | — | + | — | — |
| Starch | + | — | — | + | — | — | NA | — |
| Trehalose | + | — | + | _ | — | — | — | — |
| Alkaline phosphatase | + | — | NA | — | + | w | NA | + |
| Major end product of carbohydrate metabolism | A, B, Ib, Ip, Ih | A, B | A, E | L, S, A | NA | A, E | A, F, E | A, S |
| G+C content (%) | 63.7 | 54 | 41.9 | 49.6 | 54.6 | 50.4 | 39–44 | 53.05 |
| Isolated from | Human faeces | Human faeces | UASB reactor | Human faeces | Human faeces | Human faeces | Human faeces | Human faeces |
+, positive result; −, negative result; v, variable result; w, weakly positive result; NA, data not available; UASB, upflow anaerobic sludge blanket; A, acetic acid; B, butyric acid; ib, isobutyric acid; Ip, isopentanoic acid; Ih, isohexanoic acid; L, lactic acid; E, ethanol; F, formic; S, succinic.
1, Strain AT3; 2, Anaerotruncus colihominis; 3, Hydrogenoanaerobacterium saccharovorans; 4, Ruthenibacterium lactatiformans; 5, Acutalibacter muris; 6, Acetanaerobacterium elongatum; 7, Ruminococcus flavefaciens, 8, Ruminococcus champanellensis. Data from [Lawson et al. 2004], [Song et al. 2004], [Shkoporov et al. 2016], [Lagkouvardos et al. 2016], [Chen et al. 2004] and [Chassard et al. 2012].