Changes in expression of selected genes and viral RNA accumulation over time in different potato genotypes.

The significance of increase (+++: p<0.001, ++: p<0.01, +: p<0.05, •: p<0.1) or decrease (---: p<0.001, --: p<0.01,-: p<0.05, •: p<0.1) in gene expression over time (PR-1b: pathogenesis-related protein 1b; Glu I,II,II: β-1,3-glucanase classes I, II, III; RA: RuBisCO activase; GBSSI: granule bound starch synthase I; CAB4: chlorophyll a-b binding protein 4) and viral accumulation (PvyI) is shown for comparisons between consecutive time points (upper panel) and to the first time point (3 dpi; lower panel; GBSSI in cv. Igor and cv. Désirée compared to 4 dpi). dpi 4:3 designates significance of difference in expression at 4 dpi versus 3 dpi. An empty field denotes no significance.