Table 4.
Headspace volatiles (Peak Area, %) emitted from bacterial antagonists. Results of three independent experiments with two repetitions for each variant are presented.
| Compound* | RT (min) | Strain | |
|---|---|---|---|
| P. chlororaphis 449 (14)** | S. proteamaculans 94 (6) | ||
| Butanol-1 | 11.16 | 1.4*** | nd |
| Methyl thiolacetate | 11.80 | ≤0.1 | nd |
| Isopentanol | 12.65 | nd | 2.2 |
| Dimethyl disulfide | 12.96 | ≤0.1 | 68.7 ± 15.3 |
| 2-Heptanone | 15.73 | ≤0.1 | 1.5 ± 0.2 |
| 1,5-Dimethylpyrazine | 16.21 | nd | 1.5 |
| 1-Undecene | 18.49 | 64.5 ± 9.1 | nd |
| 2-Nonanone | 19.28 | 14.4 ± 5.0 | nd |
| 2-Undecanone | 22.59 | 12.0 ± 3.6 | nd |
| S-Methyl thiooctanoate | 22.68 | nd | 1.1 |
*Probability set at >90% to the NIST library, substances marked in bold were additionally tested in this study for biological activity (growth or survival suppression); **total number of identified VOCs produced by the bacterium (see supplement data, Figure S1-A, B); ***mean or mean ± standard error of the Peak Area, % at P < 0.05; nd: not detected.