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Fig. S1 Chromatograms of Tuber uncinatum from different countries.

Fig. S2 Effect of sample mass on volatile fingerprinting by SPME-GC/MS.

Fig. S3 Storage of truffles at 4°C up to 6 d has a minor influence on volatile profiles.

Fig. S4 Chromatograms of truffles producing low and high C8 volatiles stored at 4°C up to 6 d.

Fig. S5 Comparing SPME-GC/MS and OLS-GC/FID data sets to estimate the matrix effect.

Fig. S6 Variability in 1-octen-3-ol in truffles.

Fig. S7 Season variability of volatile markers within single sites.

Fig. S8 Distribution in the field of Wallis (Switzerland) of the different genotypes (based on AFLP data).

Fig. S9 1-Octen-3-ol intra and interspecific variability in mycelia of Tuber borchii and Tuber melanosporum.

Table S1 Detailed information for Tuber uncinatum fruiting body samples

Table S2 Raw data for chromatogram fingerprints for volatiles of Tuber uncinatum

Table S3 Model based on discriminant analysis classifies 94% of all Tuber uncinatum samples in the correct region of origin

Table S4 1-Octen-3-ol biosynthesis in Tuber borchii is not maturity dependent

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NPH_4077_sm_FigS1-S9_TableS1-S4.pdf368KSupporting info item
NPH_4077_sm_TableS2.txt160KSupporting info item