TABLE 2.
Influence of soil and NH4+ on NO2− production and MeBr oxidation by N. europaea under unsaturated water conditions
| MeBr (mM) | Amt (μmol/mg [dry wt] of cells) witha:
|
|||||||
|---|---|---|---|---|---|---|---|---|
| NH4+ (10 mM)b
|
NH4+ (40 mM)c
|
|||||||
| −Soild
|
+Soile
|
−Soil
|
+Soil
|
|||||
| NO2− | MeBr | NO2− | MeBr | NO2− | MeBr | NO2− | MeBr | |
| 0 | 280 (30) | 54 (5) | 280 (10) | 155 (5) | ||||
| 0.13 | 240 (20) | 8.0 (1) | 29 (3) | 8.1 (1) | 285 (15) | 4.8 (0.2) | 80 (0) | 7.7 (0.6) |
| 0.25 | 160 (18) | 11.2 (2) | 20 (2) | 11.2 (1) | 210 (10) | 8.0 (2) | 60 (10) | 13.7 (0.2) |
| 0.51 | 146 (13) | 16.8 (2) | 16 (2) | 9.6 (1) | 185 (15) | 11.0 (2) | 55 (5) | 18.8 (2.7) |
a
Values in parentheses are the standard errors of the means of three replicates per treatment.
b
30 μmol of NH4+ added per vial, equivalent to 10 μmol/ml of water plus buffer or 2.73 μmol of NH4+/g of soil.
c
120 μmol of NH4+ added per vial, equivalent to 40 μmol/ml of water plus buffer or 10.91 μmol of NH4+/g of soil.
d
Minus-soil treatments contained 3 ml of buffer plus water per vial.
e
Plus-soil treatments contained the equivalent of 11 g of oven-dried soil and 3 ml of buffer plus water per vial.