Table 2. Kinetic parameters of grassland soils OG, FG and HEG 6.
| Soil | Methanol dissimilation rate at 74 nmol methanol gDW−1 (μmol gDW−1d−1)a | νmax (mM)b | Km (mM)b | a0s (d−1) |
|---|---|---|---|---|
| OG Slurry 1 | 0.001 | — | — | — |
| OG Slurry 2 | 0.001 | — | — | — |
| FG Slurry 1 | 0.005 | 0.09 (<0.01) | 1.31 (0.06) | 0.07 |
| FG Slurry 2 | 0.007 | 0.16 (0.01) | 4.0 (0.7) | 0.04 |
| HEG Slurry 1 | 0.0006 | 0.39 (0.01) | 236.3 (21.0) | 0.01 |
| HEG Slurry 2 | 0.0006 | 0.34 (0.01) | 200.9 (16.0) | 0.01 |
Abbreviations: a0s, specific affinity; Km, Michaelis–Menten constant; νmax, maximal velocity; —, not measured.
a
74nmol methanol per gram dry weight of soil corresponds to 10 μℳ in slurry.
b
In parentheses, standard errors of predicted parameters are given (a0s is the quotient of νmax divided by Km, thus no error is given). Regressions are presented in Supplementary Figure S2.