Inhibitory and Toxic Effects of Volatiles Emitted by Strains of Pseudomonas and Serratia on Growth and Survival of Selected Microorganisms, Caenorhabditis elegans, and Drosophila melanogaster

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.