Percentages of VOCs emitted by the pathogenic fungi <i>Fusarium culmorum</i> and <i>Cochliobolus sativus</i>, by non-infected barley roots and by barley roots infected by <i>F. culmorum</i>, by <i>C. sativus</i> or by both.

aCompounds listed from their order of elution in a VF-Wax polar capillary column (30 m×0.25 mm×0.25 µm).1 bLinear retention index calculated on a VF-Wax capillary column with a homologous series of n-alkanes (C7–C30). cLinear retention index in literature. dIdentification proposal is indicated by the following: MS, identification by comparing EI mass spectrum with Wiley275, pal600k and NBS75K mass spectral database; RI, identification by retention indexes with literature data; STD, comparison with the retention times and mass spectra of available standards. eChemical classes: A: alcohol, E: organic ester, H: aromatic hydrocarbon, K: ketone, Aa: alkane, Ae: alkene, F: furanic compound, S: sulphur compound, T: terpenoid, O: other, NI: non identified. fMean percentage of VOCs emitted by 5 fungal cultures after 7 days, for an initial fungal inoculum of 2,000 conidia. gMean percentage emitted by 5 samples of 1 gram of dry barley roots after 7 days culture. hOnly the five major non-identified molecules (NI) of each treatment (> LOQ) were listed in the table. < LOQ means that the mean quantity of the compound is below the limit of quantification (signal/noise ratio <3 at the same retention time). Underscored figures are remarkable (see in the text).