TABLE 2.
Distribution of radioactivity (percent) within cultures of G. striatum DSM 9592 after 22 days of incubation in mineral mediuma
| Fraction | Uninoculated control | No modification | Mannitol added at 56 mM | FeSO4 omitted |
|---|---|---|---|---|
| 14CO2 | 0.2 ± 0.1 | 15.8 ± 1.4b | 3.5 ± 0.3b | 2.7 ± 0.7b |
| Volatile organic compounds | 9.2 ± 1.5 | 18.6 ± 1.0b | 27.7 ± 1.8bc | 41.8 ± 2.3bc |
| Culture supernatant | 81.9 ± 0.5 | 40.3 ± 1.7b | 39.0 ± 3.4b | 30.1 ± 0.5bc |
| Methanol extract | 0.9 ± 0.2 | 2.0 ± 0.3 | 1.3 ± 0.2 | |
| Mycelium | 8.6 ± 0.4 | 7.1 ± 1.7 | 5.0 ± 0.1 | |
| Sum | 91.3 ± 3.6 | 84.2 ± 2.5 | 79.3 ± 4.2 | 80.9 ± 2.5 |
a
Values given are the means ± standard deviations for triplicate cultures. Standard deviations for the sum of radioactivity were calculated according to Gauss' law of errors.
b
Significantly different from the uninoculated control (P < 0.02), as obtained by Tukey's honestly significant difference test.
c
Significantly different from mineral medium without modification (P < 0.02).