TABLE 1.
Substrates for denitrifying growth of the isolated strains
| Electron donor (concn, mM) | Growtha of:
|
||||
|---|---|---|---|---|---|
| Paracoccus sp. strain B8B1 | Paracoccus sp. strain B8B2 | Acidovorax sp. strain G7A1 | Acidovorax sp. strain G8B1 | Herbaspirillum sp. strain G8A1 | |
| Acetate (10) | +++ | +++ | ++ | ++ | ++ |
| Propionate (6) | +++ | +++ | ++ | ++ | ++ |
| Butyrate (4) | +++ | +++ | ++ | ++ | ++ |
| Isobutyrate (4) | +++ | +++ | ++ | ++ | ++ |
| 2,2-Dimethylpropionate (5) | − | − | − | − | − |
| Dimethylmalonate (5) | +++ | +++ | ++ | ++ | + |
| Pyruvate (10) | + | + | + | + | ++ |
| Succinate (6) | +++ | +++ | ++ | ++ | ++ |
| Methylsuccinate (5) | +++ | +++ | − | − | ++ |
| Benzoate (2) | − | − | − | − | − |
| l-Ascorbate (10) | − | − | − | − | − |
| d-Gluconate (5) | +++ | +++ | − | − | − |
| d-Glucose (5) | +++ | +++ | − | − | − |
| d-Fructose (5) | +++ | +++ | − | − | − |
| d-Galactose (5) | +++ | +++ | − | − | − |
| d-Ribose (5) | + | + | − | − | − |
| Inositol (5) | +++ | +++ | − | − | − |
| Methanol (10) | − | − | − | − | − |
| l-Glutamate (5) | +++ | +++ | ++ | ++ | + |
| l-Arginine (5) | − | − | − | − | − |
| l-Valine (5) | ++ | ++ | − | − | − |
| l-Cysteine (5) | ++ | ++ | +++ | +++ | ++ |
| l-Phenylalanine (5) | − | − | − | − | − |
| l-Isoleucine (5) | +++ | +++ | + | ++ | + |
a
Bacterial growth was determined as the increase in OD at 660 nm, as follows: −, <0.030; +, >0.070; ++, >0.200, +++, >0.400.