Table 2.
Differential traits of strain F1T, F21T and Kiritimatiella glycovorans L21-Fru-ABT. Abbreviations: MK, menaquinone; CL, cardiolipin; LCL, lysocardiolipin; MGDG, monogalactosyl diglyceride; PG, phosphatidylglycerol; PG-Gly, phosphatidylglycerohexose; +, positive; +/−, unstable, ceasing growth after the first transfer; −, negative; NDA, no data available. Major cellular fatty acids (CFAs), intact polar lipids (IPLs), quinones and fermentation products are reported in order of abundance. The CFA and IPL data for K. glycovorans were generated during this study, other data for K. glycovorans were obtained from Spring, et al. [9]. * Data from Van Vliet, et al. [8].
| Species | P. desulfatans | P. sulfatireligans | K. glycovorans |
|---|---|---|---|
| Type Strain | F1T | F21T | L21-Fru-ABT |
| Isolation source | Anoxic marine sediment * | Anoxic marine sediment * | Hypersaline microbial mat |
| Cell diameter (μm) | 0.5–1.2 * | 0.5–1.0 * | 1.0–2.0 |
| Genome size (Mbp) | 8.6 * | 7.4 * | 3.0 |
| DNA G+C content (mol%) | 56.0 | 54.6 | 63.3 |
| Quinones | MK-7, MK-6, MK-8 | MK-9, MK-8, MK-6, MK-7 | none |
| Major CFAs (>5% of total) | C18:0, i-C12:0, i-C14:0, i-C18:0 | C18:0, i-C12:0, i-C18:0, i-C14:0, i-C16:0 | i-C14:0, C18:0, i-C18:0 |
| Major IPLs | PG, LCL, CL, MGDG | PG, CL, MGDG, LCL | PG, CL, MGDG, PG-Gly, LCL |
| Oxidase activity | − | + | − |
| Temp. for growth (°C) | |||
| Range | 10–30 * | 0–25 | 20–40 |
| Optimum | 25 * | 25 * | 28 |
| NaCl conc. for growth (g L−1) | |||
| Range | 10–31 | 10–50 | 20–180 |
| Optimum | 23 | 23 | 60–70 |
| pH for growth | |||
| Range | 6.5–8.5 | 6.0–8.5 | 6.5–8.0 |
| Optimum | 7.5 | 7.5 | 7.5 |
| Substrate utilization | |||
| Chondroitin sulfate | + * | + * | - |
| Fucoidan | + * | + * | +/- |
| Iota-carrageenan | − * | + * | +/- |
| Arabinose | + * | − * | − |
| Cellobiose | + * | + * | − |
| Fructose | + * | + * | − |
| Fucose | + * | + * | − |
| Galactose | + * | + * | +/− |
| Galacturonate | − * | + * | NDA |
| Lactose | + * | + * | − |
| Maltose | + * | + * | − |
| Mannitol | − * | + * | − |
| Mannose | − * | + * | + |
| Rhamnose | + * | + * | +/− |
| Sucrose | + * | + * | − |
| Tagatose | + * | - * | NDA |
| Trehalose | + * | + * | − |
| Major fermentation productsfrom L-fucose | Acetate, H2, ethanol, lactate * | Acetate, ethanol, H2, 1,2-propanediol * | − |
| Major non-gaseous fermentation products from D-glucose | Acetate, ethanol, lactate | Acetate, ethanol, lactate | Ethanol, acetate |