Fig. 4

Differential expression of miRNAs in GRBV-negative vs. GRBV-positive vines during pre- and post-véraison stages. The Venn diagram shows the number of miRNA isoforms differentially expressed in response to infection by GRBV in leaves and berries, either in pre-véraison, post-véraison, or at both stages. Bar charts show the number, direction, and the identity of differentially expressed miRNAs in response to infection, either in pre-véraison, post-véraison, or at both stages. Red indicates miRNAs that were downregulated in GRBV-positive relative to GRBV-negative samples, and green indicates miRNAs that were up-regulated in GRBV-positive relative to GRBV-negative samples, either in pre-véraison, post-véraison, or at both stages. Grey indicates that miR166ax and miR3624a-3p were up-regulated during pre-véraison but down-regulated during post-véraison