Table 1.
Differential phenotypic characteristics of strain G18T and the type strains of other Geodermatophilus species. Strains: 1, G. poikilotrophi sp. nov. G18T; 2, G. obscurus DSM 43160T; 3, G. ruber DSM 45317T; 4, G. nigrescens DSM 45408T; 5, G. arenarius DSM 45418T; 6, G. siccatus DSM 45419T; 7, G. saharensis DSM 45423T; 8, G. tzadiensis DSM 45416T; 9, G. telluris DSM 45421T; 10, G. soli DSM 45843T; 11, G. terrae DSM 45844T; 12, G. africanus DSM 45422T; 13, G. normandii DSM 45417T; 14, G. taihuensis DSM 45962T; 15, G. amargosae DSM 46136T. All physiological data are from this study.
| Characteristics | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Colony colour on GYM | Light-red, greenish-black | Black | Light-red, red | Light-red, black | Light-red, brown | Light-red, black | Light-red, black | Light-red, greenish-black | Black | Light red | Light red | Black | Light-red, greenish-black | Coral pink | Black |
| Colony surface on GYM | Moist | Dry | Moist | Moist | Moist | Moist | Moist | Moist | Dry | Moist | Moist | Dry | Moist | Moist | Dry |
| Utilization of | |||||||||||||||
| Turanose | − | + | + | + | + | − | + | + | + | + | + | − | + | + | + |
| Stachyose | + | +/− | + | +/− | − | − | − | + | − | + | − | − | − | +/− | − |
| D-Melibiose | − | − | − | +/− | − | − | +/− | + | − | + | − | − | +/− | + | + |
| D-Salicin | − | +/− | − | + | + | − | + | + | + | + | +/− | − | +/− | + | − |
| NaCl range (w/v) | |||||||||||||||
| 1% | + | + | + | + | + | − | + | + | + | +/− | + | + | + | + | +/− |
| 4% | − | +/− | + | + | − | − | + | +/− | + | − | − | + | − | + | +/− |
| D-Mannose | + | + | − | + | + | + | + | + | + | + | + | − | + | − | +/− |
| L-Rhamnose | + | − | − | + | + | − | + | + | + | + | + | − | + | − | − |
| Inosine | − | − | + | +/− | − | − | + | + | − | + | − | − | + | + | − |
| D-Sorbitol | + | + | − | − | − | + | + | + | + | +/− | +/− | − | − | +/− | +/− |
| D-Mannitol | + | + | − | +/− | − | + | + | + | + | + | + | − | − | + | +/− |
| D-Arabitol | − | + | − | +/− | − | + | + | − | + | − | − | − | − | + | − |
| Glycerol | + | + | − | − | + | + | − | + | + | + | + | − | + | + | − |
| L-Alanine | − | − | +/− | − | + | + | − | − | − | + | + | − | − | +/− | + |
| L-Arginine | + | − | − | − | − | + | + | + | + | − | − | − | − | − | − |
| L-Histidine | − | − | + | − | − | − | + | − | − | − | − | − | − | − | +/− |
| Pectin | + | + | − | + | − | + | + | + | + | + | + | − | + | + | − |
| D-Gluconic acid | + | + | − | + | − | + | + | + | + | + | + | − | + | − | − |
| Quinic acid | + | + | + | − | − | + | − | − | + | + | + | − | − | + | − |
| Predominant menaquinone(s)a | MK-9(H4) | MK-9(H4), MK-9(H2), MK-8(H4) | MK-9(H4) | MK-9(H4) | MK-9(H4), MK-8(H4), MK-9 (H0) | MK-9(H4), MK-8(H4), MK-9(H0) | MK-9(H4), MK-8(H4) | MK-9(H4), MK-9(H0) | MK-9(H4) | MK-9(H4), MK-9(H0), MK-9(H2) | MK-9(H4), MK-9(H0) | MK-9(H4) | MK-9(H4) | MK-9 (H4), MK-9(H0)# | MK-9(H4) |
| Phospholipids∗ | PE, PC, PI, DPG | DPG, PC, PE, PI, PG | DPG, PE, PC, PI, 2PL, PG | DPG, PE, PC, PI, PG | PE, PC, DPG, PI, PG | PE, PC, PI, DPG, PG | DPG, PC, PI, PE, PG | DPG, PC, PE, PI, PG | DPG, PC, PE, PI, APL, PG | DPG, PME, PE, PI, 3PL† | DPG, PME, PE, PI, 5PL† | DPG, PC, PE, PI, PG | DPG, PC, PE, PI, PG | DPG, PE, PI, PIM# | DPG, PC, PE, PI, PG |
| Major fatty acidsb | i-C15:0, i-C16:0, C17:1 ω8c |
i-C15:0, i-C16:0, C17:1 ω8c |
i-C15:0, ai-C15:0, i-C16:0, ai-C17:0, C17:1 ω8c |
i-C15:0, i-C16:0 |
i-C15:0, i-C16:0 |
i-C15:0, i-C16:0, C17:1 ω8c |
i-C15:0, i-C16:0, i-H-C16:1 |
i-C15:0, i-C16:0 |
i-C15:0, i-C16:0 |
i-C15:0, i-C16:0, C17:0 |
i-C15:0, i-C16:0, C18:1 ω9c |
i-C16:0 | i-C15:0, i-C16:0 |
i-C15:0, i-C16:0, C17:1 ω8c |
i-C15:0, i-C16:0 |
+, positive reaction; −, negative reaction; +/−, ambiguous; MK, menaquinones; DPG, diphosphatidylglycerol; PE, phosphatidylethanolamine; PME, phosphatidyl-N-methylethanolamine; PE-OH, hydroxyphosphatidylethanolamine; PG, phosphatidylglycerol; PC, phosphatidylcholine; PI, phosphatidylinositol; PIM, phosphatidylinositol mannoside; PL, unknown phospholipid; APL, unknown amino-phospholipid; i-, iso-branched; ai-, anteiso-branched.
aOnly components making up ≥ 5% peak area ratio are shown; bonly components making up ≥ 10% peak area ratio are shown; ∗the components are listed in decreasing order of quantity.