Figure S1. Relative expression levels of selected potato defence genes in tolerant and susceptible potato cultivars. Expression levels of StTOSB, StSN2, StUDP, StSN1, StPRF, StLOX, StWRKY6, StMRNA, StDEF and StNBS were measured in Innovator (tolerant) and Vanderplank (susceptible) cultivars inoculated and uninoculated with Spongospora subterranea f. sp. subterranea. Amplification of StEFα‐1 and β‐tubulin gene expression was used to normalize the expression value in each sample. The relative expression values were determined against the average values of the uninoculated control samples. Data represent fold change of gene expression at 7 weeks after emergence and at 15 weeks after emergence. The average of three replicates is shown and different letters show significant differences (Student's t‐test: P < 0.05) between the two cultivars.
Figure S2. Mean powdery scab disease severity and disease index of two potato cultivars evaluated for Spongospora subterranea f. sp. subterranea tuber infection. Values are log 10 transformed means of the three biological replicates for each cultivar. Bars represent the standard error.
Table S1. List of differentially expressed genes in tolerant potato cultivar Innovator, inoculated with Spongospora subterranea f. sp. subterranea.
Table S2. List of differentially expressed genes in susceptible potato cultivar Vanderplank, inoculated with Spongospora subterranea f. sp. subterranea.
Table S3. List of genes up‐regulated in tolerant and susceptible potato cultivars inoculated/uninoculated with Spongospora subterranea f. sp. subterranea.
Table S4. List of genes down‐regulated in tolerant and susceptible potato cultivars inoculated/uninoculated with Spongospora subterranea f. sp. subterranea.
