Table 2 Physiological and phenotypic features of EP7T in comparison to its closest relatives Tundrisphaera lichenicola PT12T and Singulisphaera acidiphila MOB10T, n.o.: not observed.
Characteristics | EP7T | Tundrisphaera lichenicola P12T53 | Singulisphaera acidiphila MOB10T51 |
|---|---|---|---|
Sampling location | Hainich CZE, Thuringia (Germany) | Nadym Region, Yamalo-Nenets Autonomous Okrug (Russia) | Obukhovskoe, Yaroslavl Region (Russia) |
Sampled material | Percolate of drainage collector | Oxic layer of peat | Acidic Sphagnum Peat (pH 4.2) |
Temperature range (optimum) (°C) | 10–25 (18–21) | 4–28 (15–22) | 4–33 (20–26) |
pH Range (optimum) | 6.0–9.0 (7.5) | 4.5–6.8 (5.5–6.0) | 4.2–7.5 (5.0–6.2) |
Relation to oxygen | Facultatively anaerobic | Aerobic | Aerobic |
Cell shape | Spherical | Spherical | Spherical |
Pigmentation | Light pink | Pink | Colorless (opaque) |
Motility | Non-motile | Non-motile | Non-motile |
Stalks | n.o. | Holdfast-like appendages | Absent |
Aggregates | Forms small, microscopic aggregates | Forms small chains | Forms shapeless aggregates |
Cell division mode | Asymmetric cell division (“polar” budding) | Asymmetric cell division (“polar” budding) | Asymmetric cell division (“polar” budding) |
